Fare Guide

Estimated lowest fares found within 7 days

Cheapest Airline Spirit Airlines

The cheapest airline(s) flying from Saint Louis to Boston is Spirit Airlines.

  • Spirit Airlines Spirit Airlines
  • Frontier Airlines Frontier Airlines
  • United Airlines United Airlines
  • American Airlines American Airlines
  • Southwest Airlines Southwest Airlines
  • Alaska Airlines Alaska Airlines
Cheapest Month December

Travel Period: December 2024 - November 2025

The cheapest month(s) to fly from Saint Louis to Boston is December.

  • Dec 2024
  • Jan 2025
  • Feb 2025
  • Mar 2025
  • Apr 2025
  • May 2025
  • Jun 2025
  • Jul 2025
  • Aug 2025
  • Sep 2025
  • Oct 2025
  • Nov 2025
Cheapest Day of the Week Thursday

The cheapest day(s) of the week to fly from Saint Louis to Boston is Thursday.

  • Sun Sunday
  • Mon Monday
  • Tue Tuesday
  • Wed Wednesday
  • Thu Thursday
  • Fri Friday
  • Sat Saturday

Flight Schedules

Last Updated: Sat, 2 Nov, 2024

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  • Availability
    • M
    • T
    • W
    • T
    • F
    • S
    • S
  • 18:15 STL
    21:45 BOS
    2Hrs, 30m Direct
  • STLSt Louis Lambert Intl Airport 18:15 - BOS 21:45 2h 30m Direct
  • STLSt Louis Lambert Intl Airport 18:15
  • BOSBoston Logan International Airport 21:45
  • 2h 30m
  • Direct
  • Southwest Airlines (WN 3126)Boeing 737 700
  • Southwest Airlines (WN 3126)
    • -
    • -
    • -
    • -
    • F
    • -
    • -
  • Boeing 737 700
  • 20:25 STL
    23:55 BOS
    2Hrs, 30m Direct
  • STLSt Louis Lambert Intl Airport 20:25 - BOS 23:55 2h 30m Direct
  • STLSt Louis Lambert Intl Airport 20:25
  • BOSBoston Logan International Airport 23:55
  • 2h 30m
  • Direct
  • Southwest Airlines (WN 4422)Boeing 737 700
  • Southwest Airlines (WN 4422)
    • M
    • -
    • -
    • -
    • -
    • -
    • -
  • Boeing 737 700
  • 20:40 STL
    00:10 BOS
    2Hrs, 30m Direct
  • STLSt Louis Lambert Intl Airport 20:40 - BOS 00:10 2h 30m Direct
  • STLSt Louis Lambert Intl Airport 20:40
  • BOSBoston Logan International Airport 00:10
  • 2h 30m
  • Direct
  • Southwest Airlines (WN 4422)Boeing 737 Max 8 Passenger
  • Southwest Airlines (WN 4422)
    • -
    • -
    • -
    • -
    • -
    • -
    • S
  • Boeing 737 Max 8 Passenger
  • 20:40 STL
    00:10 BOS
    2Hrs, 30m Direct
  • STLSt Louis Lambert Intl Airport 20:40 - BOS 00:10 2h 30m Direct
  • STLSt Louis Lambert Intl Airport 20:40
  • BOSBoston Logan International Airport 00:10
  • 2h 30m
  • Direct
  • Southwest Airlines (WN 4422)Boeing 737 700
  • Southwest Airlines (WN 4422)
    • -
    • -
    • -
    • -
    • -
    • S
    • -
  • Boeing 737 700
  • 20:50 STL
    00:20 BOS
    2Hrs, 30m Direct
  • STLSt Louis Lambert Intl Airport 20:50 - BOS 00:20 2h 30m Direct
  • STLSt Louis Lambert Intl Airport 20:50
  • BOSBoston Logan International Airport 00:20
  • 2h 30m
  • Direct
  • Southwest Airlines (WN 4422)Boeing 737 Max 8 Passenger
  • Southwest Airlines (WN 4422)
    • -
    • T
    • W
    • -
    • -
    • -
    • -
  • Boeing 737 Max 8 Passenger
  • 07:40 STL
    11:10 BOS
    2Hrs, 30m Direct
  • STLSt Louis Lambert Intl Airport 07:40 - BOS 11:10 2h 30m Direct
  • STLSt Louis Lambert Intl Airport 07:40
  • BOSBoston Logan International Airport 11:10
  • 2h 30m
  • Direct
  • Southwest Airlines (WN 2357)Boeing 737 800
  • Southwest Airlines (WN 2357)
    • -
    • -
    • -
    • -
    • -
    • S
    • -
  • Boeing 737 800
  • 07:50 STL
    11:20 BOS
    2Hrs, 30m Direct
  • STLSt Louis Lambert Intl Airport 07:50 - BOS 11:20 2h 30m Direct
  • STLSt Louis Lambert Intl Airport 07:50
  • BOSBoston Logan International Airport 11:20
  • 2h 30m
  • Direct
  • Southwest Airlines (WN 4437)Boeing 737 800
  • Southwest Airlines (WN 4437)
    • -
    • T
    • W
    • -
    • -
    • -
    • -
  • Boeing 737 800
  • 07:50 STL
    11:20 BOS
    2Hrs, 30m Direct
  • STLSt Louis Lambert Intl Airport 07:50 - BOS 11:20 2h 30m Direct
  • STLSt Louis Lambert Intl Airport 07:50
  • BOSBoston Logan International Airport 11:20
  • 2h 30m
  • Direct
  • Southwest Airlines (WN 2357)Boeing 737 700
  • Southwest Airlines (WN 2357)
    • -
    • -
    • -
    • T
    • -
    • -
    • -
  • Boeing 737 700
  • 07:55 STL
    11:25 BOS
    2Hrs, 30m Direct
  • STLSt Louis Lambert Intl Airport 07:55 - BOS 11:25 2h 30m Direct
  • STLSt Louis Lambert Intl Airport 07:55
  • BOSBoston Logan International Airport 11:25
  • 2h 30m
  • Direct
  • Southwest Airlines (WN 146)Boeing 737 Max 8 Passenger
  • Southwest Airlines (WN 146)
    • -
    • -
    • -
    • -
    • -
    • -
    • S
  • Boeing 737 Max 8 Passenger
  • 07:55 STL
    11:25 BOS
    2Hrs, 30m Direct
  • STLSt Louis Lambert Intl Airport 07:55 - BOS 11:25 2h 30m Direct
  • STLSt Louis Lambert Intl Airport 07:55
  • BOSBoston Logan International Airport 11:25
  • 2h 30m
  • Direct
  • Southwest Airlines (WN 2357)Boeing 737 800
  • Southwest Airlines (WN 2357)
    • M
    • -
    • -
    • -
    • -
    • -
    • -
  • Boeing 737 800
  • 09:20 STL
    12:55 BOS
    2Hrs, 35m Direct
  • STLSt Louis Lambert Intl Airport 09:20 - BOS 12:55 2h 35m Direct
  • STLSt Louis Lambert Intl Airport 09:20
  • BOSBoston Logan International Airport 12:55
  • 2h 35m
  • Direct
  • American Airlines (AA 4493)Embraer Emb 175
  • American Airlines (AA 4493)
    • M
    • T
    • W
    • T
    • F
    • -
    • S
  • Embraer Emb 175
  • 09:30 STL
    13:00 BOS
    2Hrs, 30m Direct
  • STLSt Louis Lambert Intl Airport 09:30 - BOS 13:00 2h 30m Direct
  • STLSt Louis Lambert Intl Airport 09:30
  • BOSBoston Logan International Airport 13:00
  • 2h 30m
  • Direct
  • Southwest Airlines (WN 2357)Boeing 737 800
  • Southwest Airlines (WN 2357)
    • -
    • -
    • -
    • -
    • F
    • -
    • -
  • Boeing 737 800
  • 11:35 STL
    15:05 BOS
    2Hrs, 30m Direct
  • STLSt Louis Lambert Intl Airport 11:35 - BOS 15:05 2h 30m Direct
  • STLSt Louis Lambert Intl Airport 11:35
  • BOSBoston Logan International Airport 15:05
  • 2h 30m
  • Direct
  • Southwest Airlines (WN 4191)Boeing 737 800
  • Southwest Airlines (WN 4191)
    • -
    • -
    • -
    • -
    • -
    • -
    • S
  • Boeing 737 800
  • 13:45 STL
    17:17 BOS
    2Hrs, 32m Direct
  • STLSt Louis Lambert Intl Airport 13:45 - BOS 17:17 2h 32m Direct
  • STLSt Louis Lambert Intl Airport 13:45
  • BOSBoston Logan International Airport 17:17
  • 2h 32m
  • Direct
  • American Airlines (AA 3416)Embraer Emb 175
  • American Airlines (AA 3416)
    • M
    • T
    • W
    • -
    • F
    • S
    • S
  • Embraer Emb 175
  • 14:50 STL
    18:20 BOS
    2Hrs, 30m Direct
  • STLSt Louis Lambert Intl Airport 14:50 - BOS 18:20 2h 30m Direct
  • STLSt Louis Lambert Intl Airport 14:50
  • BOSBoston Logan International Airport 18:20
  • 2h 30m
  • Direct
  • Southwest Airlines (WN 3126)Boeing 737 Max 8 Passenger
  • Southwest Airlines (WN 3126)
    • -
    • -
    • -
    • -
    • -
    • S
    • -
  • Boeing 737 Max 8 Passenger
  • 14:50 STL
    18:20 BOS
    2Hrs, 30m Direct
  • STLSt Louis Lambert Intl Airport 14:50 - BOS 18:20 2h 30m Direct
  • STLSt Louis Lambert Intl Airport 14:50
  • BOSBoston Logan International Airport 18:20
  • 2h 30m
  • Direct
  • Southwest Airlines (WN 2357)Boeing 737 800
  • Southwest Airlines (WN 2357)
    • -
    • T
    • W
    • -
    • -
    • -
    • -
  • Boeing 737 800
  • 15:05 STL
    18:30 BOS
    2Hrs, 25m Direct
  • STLSt Louis Lambert Intl Airport 15:05 - BOS 18:30 2h 25m Direct
  • STLSt Louis Lambert Intl Airport 15:05
  • BOSBoston Logan International Airport 18:30
  • 2h 25m
  • Direct
  • Southwest Airlines (WN 296)Boeing 737 Max 8 Passenger
  • Southwest Airlines (WN 296)
    • -
    • -
    • -
    • T
    • -
    • -
    • -
  • Boeing 737 Max 8 Passenger
  • 15:30 STL
    18:55 BOS
    2Hrs, 25m Direct
  • STLSt Louis Lambert Intl Airport 15:30 - BOS 18:55 2h 25m Direct
  • STLSt Louis Lambert Intl Airport 15:30
  • BOSBoston Logan International Airport 18:55
  • 2h 25m
  • Direct
  • Southwest Airlines (WN 3126)Boeing 737 Max 8 Passenger
  • Southwest Airlines (WN 3126)
    • M
    • -
    • -
    • -
    • -
    • -
    • -
  • Boeing 737 Max 8 Passenger
  • 16:00 STL
    19:25 BOS
    2Hrs, 25m Direct
  • STLSt Louis Lambert Intl Airport 16:00 - BOS 19:25 2h 25m Direct
  • STLSt Louis Lambert Intl Airport 16:00
  • BOSBoston Logan International Airport 19:25
  • 2h 25m
  • Direct
  • Southwest Airlines (WN 1472)Boeing 737 700
  • Southwest Airlines (WN 1472)
    • -
    • -
    • -
    • -
    • -
    • -
    • S
  • Boeing 737 700
  • 18:10 STL
    23:40 BOS
    4Hrs, 30m 1 Stop (MDW)
  • STLSt Louis Lambert Intl Airport 18:10 - BOS 23:40 4h 30m 1 Stop (MDW) Chicago
  • STLSt Louis Lambert Intl Airport 18:10
    MDWChicago Midway Airport 20:30
  • MDWChicago Midway Airport 19:20
    BOSBoston Logan International Airport 23:40
  • 4h 30m (1h 10m)
  • 1 Stop MDW · Chicago 1h 10m
  • Southwest Airlines (WN 1253)Boeing 737 Max 8 Passenger
    Southwest Airlines (WN 2229)Boeing 737 Max 8 Passenger
  • Southwest Airlines (WN 1253)
    • M
    • -
    • -
    • -
    • -
    • -
    • -
  • 18:17 STL
    23:29 BOS
    4Hrs, 12m 1 Stop (DCA)
  • STLSt Louis Lambert Intl Airport 18:17 - BOS 23:29 4h 12m 1 Stop (DCA) Washington
  • STLSt Louis Lambert Intl Airport 18:17
    DCAWashington Ronald Reagan National Airport 22:00
  • DCAWashington Ronald Reagan National Airport 21:23
    BOSBoston Logan International Airport 23:29
  • 4h 12m (37m)
  • 1 Stop DCA · Washington 37m
  • American Airlines (AA 5398)Crj 700 Canadair Regional
    American Airlines (AA 2120)Airbus
  • American Airlines (AA 5398)
    • M
    • T
    • -
    • -
    • F
    • -
    • S
  • 18:20 STL
    23:35 BOS
    4Hrs, 15m 1 Stop (MDW)
  • STLSt Louis Lambert Intl Airport 18:20 - BOS 23:35 4h 15m 1 Stop (MDW) Chicago
  • STLSt Louis Lambert Intl Airport 18:20
    MDWChicago Midway Airport 20:25
  • MDWChicago Midway Airport 19:30
    BOSBoston Logan International Airport 23:35
  • 4h 15m (55m)
  • 1 Stop MDW · Chicago 55m
  • Southwest Airlines (WN 652)Boeing 737 Max 8 Passenger
    Southwest Airlines (WN 1350)Boeing 737 700
  • Southwest Airlines (WN 652)
    • -
    • T
    • W
    • -
    • -
    • -
    • -
  • 18:34 STL
    00:34 BOS
    5Hrs, 00m 1 Stop (CLT)
  • STLSt Louis Lambert Intl Airport 18:34 - BOS 00:34 5h 1 Stop (CLT) Charlotte
  • STLSt Louis Lambert Intl Airport 18:34
    CLTCharlotte Airport 22:26
  • CLTCharlotte Airport 21:22
    BOSBoston Logan International Airport 00:34
  • 5h (1h 04m)
  • 1 Stop CLT · Charlotte 1h 04m
  • American Airlines (AA 2497)Airbus
    American Airlines (AA 1937)Airbus
  • American Airlines (AA 2497)
    • M
    • T
    • W
    • -
    • F
    • S
    • S
  • 18:40 STL
    00:05 BOS
    4Hrs, 25m 1 Stop (MDW)
  • STLSt Louis Lambert Intl Airport 18:40 - BOS 00:05 4h 25m 1 Stop (MDW) Chicago
  • STLSt Louis Lambert Intl Airport 18:40
    MDWChicago Midway Airport 20:55
  • MDWChicago Midway Airport 19:50
    BOSBoston Logan International Airport 00:05
  • 4h 25m (1h 05m)
  • 1 Stop MDW · Chicago 1h 05m
  • Southwest Airlines (WN 970)Boeing 737 800
    Southwest Airlines (WN 2229)Boeing 737 Max 8 Passenger
  • Southwest Airlines (WN 970)
    • -
    • -
    • -
    • -
    • -
    • -
    • S
  • 05:00 STL
    11:08 BOS
    5Hrs, 08m 1 Stop (CLT)
  • STLSt Louis Lambert Intl Airport 05:00 - BOS 11:08 5h 08m 1 Stop (CLT) Charlotte
  • STLSt Louis Lambert Intl Airport 05:00
    CLTCharlotte Airport 08:59
  • CLTCharlotte Airport 07:56
    BOSBoston Logan International Airport 11:08
  • 5h 08m (1h 03m)
  • 1 Stop CLT · Charlotte 1h 03m
  • American Airlines (AA 1515)Boeing 737 800
    American Airlines (AA 3252)Boeing 737 800
  • American Airlines (AA 1515)
    • M
    • T
    • W
    • -
    • F
    • S
    • S
  • 05:00 STL
    11:08 BOS
    5Hrs, 08m 1 Stop (CLT)
  • STLSt Louis Lambert Intl Airport 05:00 - BOS 11:08 5h 08m 1 Stop (CLT) Charlotte
  • STLSt Louis Lambert Intl Airport 05:00
    CLTCharlotte Airport 09:00
  • CLTCharlotte Airport 07:56
    BOSBoston Logan International Airport 11:08
  • 5h 08m (1h 04m)
  • 1 Stop CLT · Charlotte 1h 04m
  • American Airlines (AA 1515)Boeing 737 800
    American Airlines (AA 3252)Boeing 737 800
  • American Airlines (AA 1515)
    • -
    • -
    • -
    • T
    • -
    • -
    • -
  • 05:10 STL
    11:35 BOS
    5Hrs, 25m 1 Stop (BWI)
  • STLSt Louis Lambert Intl Airport 05:10 - BOS 11:35 5h 25m 1 Stop (BWI) Baltimore
  • STLSt Louis Lambert Intl Airport 05:10
    BWIBaltimore Washington International Airport 10:05
  • BWIBaltimore Washington International Airport 08:10
    BOSBoston Logan International Airport 11:35
  • 5h 25m (1h 55m)
  • 1 Stop BWI · Baltimore 1h 55m
  • Southwest Airlines (WN 4468)Boeing 737 700
    Southwest Airlines (WN 1304)Boeing 737 800
  • Southwest Airlines (WN 4468)
    • -
    • T
    • W
    • -
    • -
    • -
    • -
  • 05:30 STL
    13:15 BOS
    6Hrs, 45m 1 Stop (MDW)
  • STLSt Louis Lambert Intl Airport 05:30 - BOS 13:15 6h 45m 1 Stop (MDW) Chicago
  • STLSt Louis Lambert Intl Airport 05:30
    MDWChicago Midway Airport 10:00
  • MDWChicago Midway Airport 06:40
    BOSBoston Logan International Airport 13:15
  • 6h 45m (3h 20m)
  • 1 Stop MDW · Chicago 3h 20m
  • Southwest Airlines (WN 367)Boeing 737 700
    Southwest Airlines (WN 4761)Boeing 737 800
  • Southwest Airlines (WN 367)
    • -
    • -
    • -
    • -
    • -
    • -
    • S
  • 05:35 STL
    12:40 BOS
    6Hrs, 05m 1 Stop (MDW)
  • STLSt Louis Lambert Intl Airport 05:35 - BOS 12:40 6h 05m 1 Stop (MDW) Chicago
  • STLSt Louis Lambert Intl Airport 05:35
    MDWChicago Midway Airport 09:30
  • MDWChicago Midway Airport 06:45
    BOSBoston Logan International Airport 12:40
  • 6h 05m (2h 45m)
  • 1 Stop MDW · Chicago 2h 45m
  • Southwest Airlines (WN 3171)Boeing 737 Max 8 Passenger
    Southwest Airlines (WN 2666)Boeing 737 800
  • Southwest Airlines (WN 3171)
    • -
    • -
    • -
    • -
    • -
    • S
    • -
  • 05:40 STL
    11:15 BOS
    4Hrs, 35m 1 Stop (MDW)
  • STLSt Louis Lambert Intl Airport 05:40 - BOS 11:15 4h 35m 1 Stop (MDW) Chicago
  • STLSt Louis Lambert Intl Airport 05:40
    MDWChicago Midway Airport 08:00
  • MDWChicago Midway Airport 06:50
    BOSBoston Logan International Airport 11:15
  • 4h 35m (1h 10m)
  • 1 Stop MDW · Chicago 1h 10m
  • Southwest Airlines (WN 367)Boeing 737 700
    Southwest Airlines (WN 2666)Boeing 737 800
  • Southwest Airlines (WN 367)
    • M
    • -
    • -
    • -
    • -
    • -
    • -
  • 05:45 STL
    11:22 BOS
    4Hrs, 37m 1 Stop (ORD)
  • STLSt Louis Lambert Intl Airport 05:45 - BOS 11:22 4h 37m 1 Stop (ORD) Chicago
  • STLSt Louis Lambert Intl Airport 05:45
    ORDChicago O'Hare International Airport 08:09
  • ORDChicago O'Hare International Airport 07:09
    BOSBoston Logan International Airport 11:22
  • 4h 37m (1h)
  • 1 Stop ORD · Chicago 1h
  • American Airlines (AA 629)Boeing 737 800
    American Airlines (AA 314)Boeing 737 800
  • American Airlines (AA 629)
    • M
    • T
    • W
    • -
    • -
    • S
    • S
  • 05:45 STL
    11:25 BOS
    4Hrs, 40m 1 Stop (MDW)
  • STLSt Louis Lambert Intl Airport 05:45 - BOS 11:25 4h 40m 1 Stop (MDW) Chicago
  • STLSt Louis Lambert Intl Airport 05:45
    MDWChicago Midway Airport 08:10
  • MDWChicago Midway Airport 06:55
    BOSBoston Logan International Airport 11:25
  • 4h 40m (1h 15m)
  • 1 Stop MDW · Chicago 1h 15m
  • Southwest Airlines (WN 367)Boeing 737 800
    Southwest Airlines (WN 3061)Boeing 737 800
  • Southwest Airlines (WN 367)
    • -
    • -
    • -
    • T
    • -
    • -
    • -
  • 05:45 STL
    12:10 BOS
    5Hrs, 25m 1 Stop (ORD)
  • STLSt Louis Lambert Intl Airport 05:45 - BOS 12:10 5h 25m 1 Stop (ORD) Chicago
  • STLSt Louis Lambert Intl Airport 05:45
    ORDChicago O'Hare International Airport 08:45
  • ORDChicago O'Hare International Airport 07:09
    BOSBoston Logan International Airport 12:10
  • 5h 25m (1h 36m)
  • 1 Stop ORD · Chicago 1h 36m
  • American Airlines (AA 629)Boeing 737 800
    American Airlines (AA 3703)Embraer 170
  • American Airlines (AA 629)
    • -
    • -
    • -
    • T
    • -
    • -
    • -
  • 05:45 STL
    13:01 BOS
    6Hrs, 16m 1 Stop (ORD)
  • STLSt Louis Lambert Intl Airport 05:45 - BOS 13:01 6h 16m 1 Stop (ORD) Chicago
  • STLSt Louis Lambert Intl Airport 05:45
    ORDChicago O'Hare International Airport 09:45
  • ORDChicago O'Hare International Airport 07:09
    BOSBoston Logan International Airport 13:01
  • 6h 16m (2h 36m)
  • 1 Stop ORD · Chicago 2h 36m
  • American Airlines (AA 629)Boeing 737 800
    American Airlines (AA 1078)Boeing 737 800
  • American Airlines (AA 629)
    • -
    • T
    • -
    • -
    • -
    • -
    • -
  • 05:45 STL
    13:08 BOS
    6Hrs, 23m 1 Stop (ORD)
  • STLSt Louis Lambert Intl Airport 05:45 - BOS 13:08 6h 23m 1 Stop (ORD) Chicago
  • STLSt Louis Lambert Intl Airport 05:45
    ORDChicago O'Hare International Airport 09:45
  • ORDChicago O'Hare International Airport 07:09
    BOSBoston Logan International Airport 13:08
  • 6h 23m (2h 36m)
  • 1 Stop ORD · Chicago 2h 36m
  • American Airlines (AA 629)Boeing 737 800
    American Airlines (AA 3632)Embraer Emb 175
  • American Airlines (AA 629)
    • M
    • -
    • W
    • -
    • -
    • S
    • -
  • 05:45 STL
    13:20 BOS
    6Hrs, 35m 1 Stop (ORD)
  • STLSt Louis Lambert Intl Airport 05:45 - BOS 13:20 6h 35m 1 Stop (ORD) Chicago
  • STLSt Louis Lambert Intl Airport 05:45
    ORDChicago O'Hare International Airport 09:55
  • ORDChicago O'Hare International Airport 07:09
    BOSBoston Logan International Airport 13:20
  • 6h 35m (2h 46m)
  • 1 Stop ORD · Chicago 2h 46m
  • American Airlines (AA 629)Boeing 737 800
    American Airlines (AA 3632)Embraer Emb 175
  • American Airlines (AA 629)
    • -
    • -
    • -
    • -
    • -
    • -
    • S
  • 05:50 STL
    11:25 BOS
    4Hrs, 35m 1 Stop (BWI)
  • STLSt Louis Lambert Intl Airport 05:50 - BOS 11:25 4h 35m 1 Stop (BWI) Baltimore
  • STLSt Louis Lambert Intl Airport 05:50
    BWIBaltimore Washington International Airport 09:55
  • BWIBaltimore Washington International Airport 08:50
    BOSBoston Logan International Airport 11:25
  • 4h 35m (1h 05m)
  • 1 Stop BWI · Baltimore 1h 05m
  • Southwest Airlines (WN 399)Boeing 737 700
    Southwest Airlines (WN 1914)Boeing 737 800
  • Southwest Airlines (WN 399)
    • M
    • -
    • -
    • -
    • -
    • -
    • -
  • 06:00 STL
    12:20 BOS
    5Hrs, 20m 1 Stop (PHL)
  • STLSt Louis Lambert Intl Airport 06:00 - BOS 12:20 5h 20m 1 Stop (PHL) Philadelphia
  • STLSt Louis Lambert Intl Airport 06:00
    PHLPhiladelphia International Airport 10:46
  • PHLPhiladelphia International Airport 09:07
    BOSBoston Logan International Airport 12:20
  • 5h 20m (1h 39m)
  • 1 Stop PHL · Philadelphia 1h 39m
  • American Airlines (AA 471)Airbus
    American Airlines (AA 1416)Boeing 737 800
  • American Airlines (AA 471)
    • -
    • -
    • -
    • -
    • -
    • S
    • -
  • 06:00 STL
    12:26 BOS
    5Hrs, 26m 1 Stop (EWR)
  • STLSt Louis Lambert Intl Airport 06:00 - BOS 12:26 5h 26m 1 Stop (EWR) New York City
  • STLSt Louis Lambert Intl Airport 06:00
    EWRNewark Liberty International Airport 11:15
  • EWRNewark Liberty International Airport 09:19
    BOSBoston Logan International Airport 12:26
  • 5h 26m (1h 56m)
  • 1 Stop EWR · New York City 1h 56m
  • United Airlines (UA 1834)Airbus
    United Airlines (UA 1864)Boeing 757 200 Series
  • United Airlines (UA 1834)
    • -
    • -
    • -
    • -
    • F
    • -
    • -
  • 06:00 STL
    12:55 BOS
    5Hrs, 55m 1 Stop (MDW)
  • STLSt Louis Lambert Intl Airport 06:00 - BOS 12:55 5h 55m 1 Stop (MDW) Chicago
  • STLSt Louis Lambert Intl Airport 06:00
    MDWChicago Midway Airport 09:45
  • MDWChicago Midway Airport 07:10
    BOSBoston Logan International Airport 12:55
  • 5h 55m (2h 35m)
  • 1 Stop MDW · Chicago 2h 35m
  • Southwest Airlines (WN 2906)Boeing 737 Max 8 Passenger
    Southwest Airlines (WN 5421)Boeing 737 Max 8 Passenger
  • Southwest Airlines (WN 2906)
    • -
    • T
    • W
    • -
    • -
    • -
    • -
  • 06:00 STL
    13:55 BOS
    6Hrs, 55m 1 Stop (BWI)
  • STLSt Louis Lambert Intl Airport 06:00 - BOS 13:55 6h 55m 1 Stop (BWI) Baltimore
  • STLSt Louis Lambert Intl Airport 06:00
    BWIBaltimore Washington International Airport 12:30
  • BWIBaltimore Washington International Airport 09:00
    BOSBoston Logan International Airport 13:55
  • 6h 55m (3h 30m)
  • 1 Stop BWI · Baltimore 3h 30m
  • Southwest Airlines (WN 399)Boeing 737 700
    Southwest Airlines (WN 1125)Boeing 737 800
  • Southwest Airlines (WN 399)
    • -
    • -
    • -
    • -
    • -
    • -
    • S
  • 06:10 STL
    13:40 BOS
    6Hrs, 30m 1 Stop (BNA)
  • STLSt Louis Lambert Intl Airport 06:10 - BOS 13:40 6h 30m 1 Stop (BNA) Nashville
  • STLSt Louis Lambert Intl Airport 06:10
    BNANashville Airport 10:05
  • BNANashville Airport 07:25
    BOSBoston Logan International Airport 13:40
  • 6h 30m (2h 40m)
  • 1 Stop BNA · Nashville 2h 40m
  • Southwest Airlines (WN 2320)Boeing 737 Max 8 Passenger
    Southwest Airlines (WN 1828)Boeing 737 Max 8 Passenger
  • Southwest Airlines (WN 2320)
    • M
    • -
    • -
    • -
    • -
    • -
    • -
  • 06:17 STL
    12:34 BOS
    5Hrs, 17m 1 Stop (DCA)
  • STLSt Louis Lambert Intl Airport 06:17 - BOS 12:34 5h 17m 1 Stop (DCA) Washington
  • STLSt Louis Lambert Intl Airport 06:17
    DCAWashington Ronald Reagan National Airport 11:02
  • DCAWashington Ronald Reagan National Airport 09:20
    BOSBoston Logan International Airport 12:34
  • 5h 17m (1h 42m)
  • 1 Stop DCA · Washington 1h 42m
  • American Airlines (AA 5581)Canadair Regional
    American Airlines (AA 2134)Airbus
  • American Airlines (AA 5581)
    • -
    • -
    • -
    • -
    • -
    • -
    • S
  • 06:26 STL
    12:34 BOS
    5Hrs, 08m 1 Stop (DCA)
  • STLSt Louis Lambert Intl Airport 06:26 - BOS 12:34 5h 08m 1 Stop (DCA) Washington
  • STLSt Louis Lambert Intl Airport 06:26
    DCAWashington Ronald Reagan National Airport 11:02
  • DCAWashington Ronald Reagan National Airport 09:22
    BOSBoston Logan International Airport 12:34
  • 5h 08m (1h 40m)
  • 1 Stop DCA · Washington 1h 40m
  • American Airlines (AA 795)Airbus
    American Airlines (AA 2134)Airbus
  • American Airlines (AA 795)
    • -
    • -
    • -
    • -
    • -
    • S
    • -
  • 06:30 STL
    11:45 BOS
    4Hrs, 15m 1 Stop (MDW)
  • STLSt Louis Lambert Intl Airport 06:30 - BOS 11:45 4h 15m 1 Stop (MDW) Chicago
  • STLSt Louis Lambert Intl Airport 06:30
    MDWChicago Midway Airport 08:30
  • MDWChicago Midway Airport 07:40
    BOSBoston Logan International Airport 11:45
  • 4h 15m (50m)
  • 1 Stop MDW · Chicago 50m
  • Southwest Airlines (WN 367)Boeing 737 800
    Southwest Airlines (WN 2666)Boeing 737 700
  • Southwest Airlines (WN 367)
    • -
    • -
    • -
    • -
    • F
    • -
    • -
  • 06:30 STL
    12:34 BOS
    5Hrs, 04m 1 Stop (DCA)
  • STLSt Louis Lambert Intl Airport 06:30 - BOS 12:34 5h 04m 1 Stop (DCA) Washington
  • STLSt Louis Lambert Intl Airport 06:30
    DCAWashington Ronald Reagan National Airport 11:02
  • DCAWashington Ronald Reagan National Airport 09:26
    BOSBoston Logan International Airport 12:34
  • 5h 04m (1h 36m)
  • 1 Stop DCA · Washington 1h 36m
  • American Airlines (AA 795)Airbus
    American Airlines (AA 2134)Airbus
  • American Airlines (AA 795)
    • M
    • T
    • W
    • T
    • -
    • -
    • -
  • 06:30 STL
    12:45 BOS
    5Hrs, 15m 1 Stop (ORD)
  • STLSt Louis Lambert Intl Airport 06:30 - BOS 12:45 5h 15m 1 Stop (ORD) Chicago
  • STLSt Louis Lambert Intl Airport 06:30
    ORDChicago O'Hare International Airport 09:20
  • ORDChicago O'Hare International Airport 07:56
    BOSBoston Logan International Airport 12:45
  • 5h 15m (1h 24m)
  • 1 Stop ORD · Chicago 1h 24m
  • United Airlines (UA 683)Boeing 737 800
    United Airlines (UA 2099)Boeing 737 Max 8 Passenger
  • United Airlines (UA 683)
    • -
    • -
    • -
    • -
    • F
    • -
    • -
  • 06:30 STL
    12:45 BOS
    5Hrs, 15m 1 Stop (ORD)
  • STLSt Louis Lambert Intl Airport 06:30 - BOS 12:45 5h 15m 1 Stop (ORD) Chicago
  • STLSt Louis Lambert Intl Airport 06:30
    ORDChicago O'Hare International Airport 09:20
  • ORDChicago O'Hare International Airport 07:59
    BOSBoston Logan International Airport 12:45
  • 5h 15m (1h 21m)
  • 1 Stop ORD · Chicago 1h 21m
  • United Airlines (UA 4428)Canadair Regional Jet 550
    United Airlines (UA 2099)Boeing 737 Max 8 Passenger
  • United Airlines (UA 4428)
    • M
    • T
    • W
    • T
    • -
    • -
    • S
  • 06:30 STL
    14:00 BOS
    6Hrs, 30m 1 Stop (ORD)
  • STLSt Louis Lambert Intl Airport 06:30 - BOS 14:00 6h 30m 1 Stop (ORD) Chicago
  • STLSt Louis Lambert Intl Airport 06:30
    ORDChicago O'Hare International Airport 10:35
  • ORDChicago O'Hare International Airport 07:59
    BOSBoston Logan International Airport 14:00
  • 6h 30m (2h 36m)
  • 1 Stop ORD · Chicago 2h 36m
  • United Airlines (UA 4428)Canadair Regional Jet 550
    United Airlines (UA 399)Boeing 737 800
  • United Airlines (UA 4428)
    • -
    • T
    • W
    • -
    • -
    • -
    • S
  • 06:30 STL
    14:00 BOS
    6Hrs, 30m 1 Stop (ORD)
  • STLSt Louis Lambert Intl Airport 06:30 - BOS 14:00 6h 30m 1 Stop (ORD) Chicago
  • STLSt Louis Lambert Intl Airport 06:30
    ORDChicago O'Hare International Airport 10:35
  • ORDChicago O'Hare International Airport 07:56
    BOSBoston Logan International Airport 14:00
  • 6h 30m (2h 39m)
  • 1 Stop ORD · Chicago 2h 39m
  • United Airlines (UA 683)Boeing 737 800
    United Airlines (UA 399)Boeing 737 800
  • United Airlines (UA 683)
    • -
    • -
    • -
    • -
    • F
    • -
    • -
  • 06:30 STL
    14:01 BOS
    6Hrs, 31m 1 Stop (ORD)
  • STLSt Louis Lambert Intl Airport 06:30 - BOS 14:01 6h 31m 1 Stop (ORD) Chicago
  • STLSt Louis Lambert Intl Airport 06:30
    ORDChicago O'Hare International Airport 10:36
  • ORDChicago O'Hare International Airport 07:59
    BOSBoston Logan International Airport 14:01
  • 6h 31m (2h 37m)
  • 1 Stop ORD · Chicago 2h 37m
  • United Airlines (UA 4428)Canadair Regional Jet 550
    United Airlines (UA 399)Airbus
  • United Airlines (UA 4428)
    • -
    • -
    • -
    • -
    • -
    • S
    • -
  • 06:30 STL
    14:27 BOS
    6Hrs, 57m 1 Stop (ORD)
  • STLSt Louis Lambert Intl Airport 06:30 - BOS 14:27 6h 57m 1 Stop (ORD) Chicago
  • STLSt Louis Lambert Intl Airport 06:30
    ORDChicago O'Hare International Airport 11:08
  • ORDChicago O'Hare International Airport 07:59
    BOSBoston Logan International Airport 14:27
  • 6h 57m (3h 09m)
  • 1 Stop ORD · Chicago 3h 09m
  • United Airlines (UA 4428)Canadair Regional Jet 550
    United Airlines (UA 399)Boeing 737 Max 8 Passenger
  • United Airlines (UA 4428)
    • M
    • -
    • -
    • -
    • -
    • -
    • -
  • 06:38 STL
    12:24 BOS
    4Hrs, 46m 1 Stop (LGA)
  • STLSt Louis Lambert Intl Airport 06:38 - BOS 12:24 4h 46m 1 Stop (LGA) New York City
  • STLSt Louis Lambert Intl Airport 06:38
    LGANew York La Guardia Airport 11:12
  • LGANew York La Guardia Airport 09:59
    BOSBoston Logan International Airport 12:24
  • 4h 46m (1h 13m)
  • 1 Stop LGA · New York City 1h 13m
  • American Airlines (AA 4486)Embraer Emb 175
    American Airlines (AA 4488)Embraer Emb 175
  • American Airlines (AA 4486)
    • -
    • -
    • -
    • -
    • -
    • -
    • S
  • 06:40 STL
    12:20 BOS
    4Hrs, 40m 1 Stop (PHL)
  • STLSt Louis Lambert Intl Airport 06:40 - BOS 12:20 4h 40m 1 Stop (PHL) Philadelphia
  • STLSt Louis Lambert Intl Airport 06:40
    PHLPhiladelphia International Airport 10:46
  • PHLPhiladelphia International Airport 09:47
    BOSBoston Logan International Airport 12:20
  • 4h 40m (59m)
  • 1 Stop PHL · Philadelphia 59m
  • American Airlines (AA 471)Airbus
    American Airlines (AA 1416)Boeing 737 800
  • American Airlines (AA 471)
    • M
    • T
    • W
    • T
    • F
    • -
    • S
  • 06:40 STL
    13:30 BOS
    5Hrs, 50m 1 Stop (PHL)
  • STLSt Louis Lambert Intl Airport 06:40 - BOS 13:30 5h 50m 1 Stop (PHL) Philadelphia
  • STLSt Louis Lambert Intl Airport 06:40
    PHLPhiladelphia International Airport 12:03
  • PHLPhiladelphia International Airport 09:47
    BOSBoston Logan International Airport 13:30
  • 5h 50m (2h 16m)
  • 1 Stop PHL · Philadelphia 2h 16m
  • American Airlines (AA 471)Airbus
    American Airlines (AA 2159)Boeing 737 800
  • American Airlines (AA 471)
    • M
    • T
    • W
    • T
    • F
    • -
    • S
  • 06:55 STL
    12:10 BOS
    4Hrs, 15m 1 Stop (BWI)
  • STLSt Louis Lambert Intl Airport 06:55 - BOS 12:10 4h 15m 1 Stop (BWI) Baltimore
  • STLSt Louis Lambert Intl Airport 06:55
    BWIBaltimore Washington International Airport 10:45
  • BWIBaltimore Washington International Airport 09:55
    BOSBoston Logan International Airport 12:10
  • 4h 15m (50m)
  • 1 Stop BWI · Baltimore 50m
  • Southwest Airlines (WN 399)Boeing 737 Max 8 Passenger
    Southwest Airlines (WN 4913)Boeing 737 Max 8 Passenger
  • Southwest Airlines (WN 399)
    • -
    • -
    • -
    • T
    • -
    • -
    • -
  • 07:00 STL
    12:26 BOS
    4Hrs, 26m 1 Stop (EWR)
  • STLSt Louis Lambert Intl Airport 07:00 - BOS 12:26 4h 26m 1 Stop (EWR) New York City
  • STLSt Louis Lambert Intl Airport 07:00
    EWRNewark Liberty International Airport 11:15
  • EWRNewark Liberty International Airport 10:26
    BOSBoston Logan International Airport 12:26
  • 4h 26m (49m)
  • 1 Stop EWR · New York City 49m
  • United Airlines (UA 3529)Embraer 170
    United Airlines (UA 1864)Boeing 757 200 Series
  • United Airlines (UA 3529)
    • -
    • -
    • -
    • T
    • -
    • -
    • -
  • 07:00 STL
    12:26 BOS
    4Hrs, 26m 1 Stop (EWR)
  • STLSt Louis Lambert Intl Airport 07:00 - BOS 12:26 4h 26m 1 Stop (EWR) New York City
  • STLSt Louis Lambert Intl Airport 07:00
    EWRNewark Liberty International Airport 11:15
  • EWRNewark Liberty International Airport 10:26
    BOSBoston Logan International Airport 12:26
  • 4h 26m (49m)
  • 1 Stop EWR · New York City 49m
  • United Airlines (UA 3529)Embraer 175
    United Airlines (UA 1864)Boeing 757 200 Series
  • United Airlines (UA 3529)
    • M
    • T
    • W
    • -
    • -
    • S
    • S
  • 07:00 STL
    13:11 BOS
    5Hrs, 11m 1 Stop (EWR)
  • STLSt Louis Lambert Intl Airport 07:00 - BOS 13:11 5h 11m 1 Stop (EWR) New York City
  • STLSt Louis Lambert Intl Airport 07:00
    EWRNewark Liberty International Airport 12:00
  • EWRNewark Liberty International Airport 10:26
    BOSBoston Logan International Airport 13:11
  • 5h 11m (1h 34m)
  • 1 Stop EWR · New York City 1h 34m
  • United Airlines (UA 3529)Embraer 175
    United Airlines (UA 233)Airbus
  • United Airlines (UA 3529)
    • -
    • -
    • -
    • -
    • -
    • S
    • -
  • 07:00 STL
    13:44 BOS
    5Hrs, 44m 1 Stop (EWR)
  • STLSt Louis Lambert Intl Airport 07:00 - BOS 13:44 5h 44m 1 Stop (EWR) New York City
  • STLSt Louis Lambert Intl Airport 07:00
    EWRNewark Liberty International Airport 12:33
  • EWRNewark Liberty International Airport 10:26
    BOSBoston Logan International Airport 13:44
  • 5h 44m (2h 07m)
  • 1 Stop EWR · New York City 2h 07m
  • United Airlines (UA 3529)Embraer 170
    United Airlines (UA 233)Boeing 737 900
  • United Airlines (UA 3529)
    • -
    • -
    • -
    • T
    • -
    • -
    • -
  • 07:04 STL
    13:51 BOS
    5Hrs, 47m 1 Stop (CLT)
  • STLSt Louis Lambert Intl Airport 07:04 - BOS 13:51 5h 47m 1 Stop (CLT) Charlotte
  • STLSt Louis Lambert Intl Airport 07:04
    CLTCharlotte Airport 11:25
  • CLTCharlotte Airport 10:00
    BOSBoston Logan International Airport 13:51
  • 5h 47m (1h 25m)
  • 1 Stop CLT · Charlotte 1h 25m
  • American Airlines (AA 712)Boeing 737 800
    American Airlines (AA 3026)Boeing 737 800
  • American Airlines (AA 712)
    • -
    • -
    • -
    • -
    • -
    • S
    • -
  • 07:05 STL
    13:51 BOS
    5Hrs, 46m 1 Stop (CLT)
  • STLSt Louis Lambert Intl Airport 07:05 - BOS 13:51 5h 46m 1 Stop (CLT) Charlotte
  • STLSt Louis Lambert Intl Airport 07:05
    CLTCharlotte Airport 11:25
  • CLTCharlotte Airport 10:01
    BOSBoston Logan International Airport 13:51
  • 5h 46m (1h 24m)
  • 1 Stop CLT · Charlotte 1h 24m
  • American Airlines (AA 712)Boeing 737 800
    American Airlines (AA 3026)Airbus
  • American Airlines (AA 712)
    • -
    • -
    • -
    • T
    • -
    • -
    • -
  • 07:05 STL
    13:51 BOS
    5Hrs, 46m 1 Stop (CLT)
  • STLSt Louis Lambert Intl Airport 07:05 - BOS 13:51 5h 46m 1 Stop (CLT) Charlotte
  • STLSt Louis Lambert Intl Airport 07:05
    CLTCharlotte Airport 11:25
  • CLTCharlotte Airport 10:01
    BOSBoston Logan International Airport 13:51
  • 5h 46m (1h 24m)
  • 1 Stop CLT · Charlotte 1h 24m
  • American Airlines (AA 712)Boeing 737 800
    American Airlines (AA 3026)Boeing 737 800
  • American Airlines (AA 712)
    • M
    • T
    • W
    • -
    • F
    • -
    • S
  • 07:15 STL
    15:15 BOS
    7Hrs, 00m 1 Stop (DFW)
  • STLSt Louis Lambert Intl Airport 07:15 - BOS 15:15 7h 1 Stop (DFW) Dallas
  • STLSt Louis Lambert Intl Airport 07:15
    DFWDallas/Fort Worth Intl Airport 10:20
  • DFWDallas/Fort Worth Intl Airport 09:20
    BOSBoston Logan International Airport 15:15
  • 7h (1h)
  • 1 Stop DFW · Dallas 1h
  • American Airlines (AA 2711)Boeing 737 800
    American Airlines (AA 849)Boeing 737 800
  • American Airlines (AA 2711)
    • M
    • T
    • W
    • -
    • F
    • -
    • S
  • 07:30 STL
    13:01 BOS
    4Hrs, 31m 1 Stop (ORD)
  • STLSt Louis Lambert Intl Airport 07:30 - BOS 13:01 4h 31m 1 Stop (ORD) Chicago
  • STLSt Louis Lambert Intl Airport 07:30
    ORDChicago O'Hare International Airport 09:45
  • ORDChicago O'Hare International Airport 08:51
    BOSBoston Logan International Airport 13:01
  • 4h 31m (54m)
  • 1 Stop ORD · Chicago 54m
  • American Airlines (AA 4870)Crj 700 Canadair Regional
    American Airlines (AA 1078)Boeing 737 800
  • American Airlines (AA 4870)
    • -
    • T
    • -
    • -
    • -
    • -
    • -
  • 07:30 STL
    13:08 BOS
    4Hrs, 38m 1 Stop (ORD)
  • STLSt Louis Lambert Intl Airport 07:30 - BOS 13:08 4h 38m 1 Stop (ORD) Chicago
  • STLSt Louis Lambert Intl Airport 07:30
    ORDChicago O'Hare International Airport 09:45
  • ORDChicago O'Hare International Airport 08:51
    BOSBoston Logan International Airport 13:08
  • 4h 38m (54m)
  • 1 Stop ORD · Chicago 54m
  • American Airlines (AA 4870)Crj 700 Canadair Regional
    American Airlines (AA 3632)Embraer Emb 175
  • American Airlines (AA 4870)
    • M
    • -
    • W
    • -
    • -
    • -
    • -
  • 07:30 STL
    13:08 BOS
    4Hrs, 38m 1 Stop (ORD)
  • STLSt Louis Lambert Intl Airport 07:30 - BOS 13:08 4h 38m 1 Stop (ORD) Chicago
  • STLSt Louis Lambert Intl Airport 07:30
    ORDChicago O'Hare International Airport 09:45
  • ORDChicago O'Hare International Airport 08:54
    BOSBoston Logan International Airport 13:08
  • 4h 38m (51m)
  • 1 Stop ORD · Chicago 51m
  • American Airlines (AA 4340)Embraer Emb 175
    American Airlines (AA 3632)Embraer Emb 175
  • American Airlines (AA 4340)
    • -
    • -
    • -
    • -
    • -
    • S
    • -
  • 07:30 STL
    13:20 BOS
    4Hrs, 50m 1 Stop (ORD)
  • STLSt Louis Lambert Intl Airport 07:30 - BOS 13:20 4h 50m 1 Stop (ORD) Chicago
  • STLSt Louis Lambert Intl Airport 07:30
    ORDChicago O'Hare International Airport 09:55
  • ORDChicago O'Hare International Airport 08:51
    BOSBoston Logan International Airport 13:20
  • 4h 50m (1h 04m)
  • 1 Stop ORD · Chicago 1h 04m
  • American Airlines (AA 4870)Crj 700 Canadair Regional
    American Airlines (AA 3632)Embraer Emb 175
  • American Airlines (AA 4870)
    • -
    • -
    • -
    • -
    • -
    • -
    • S
  • 07:30 STL
    15:05 BOS
    6Hrs, 35m 1 Stop (ORD)
  • STLSt Louis Lambert Intl Airport 07:30 - BOS 15:05 6h 35m 1 Stop (ORD) Chicago
  • STLSt Louis Lambert Intl Airport 07:30
    ORDChicago O'Hare International Airport 11:45
  • ORDChicago O'Hare International Airport 08:51
    BOSBoston Logan International Airport 15:05
  • 6h 35m (2h 54m)
  • 1 Stop ORD · Chicago 2h 54m
  • American Airlines (AA 4870)Crj 700 Canadair Regional
    American Airlines (AA 3632)Embraer Emb 175
  • American Airlines (AA 4870)
    • -
    • -
    • -
    • T
    • -
    • -
    • -
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What’s the fastest flight time from Saint Louis to Boston?

The fastest flight time for direct flights from Saint Louis to Boston is 2 hours 25 minutes. Check latest flight schedules & prices on Wego.

How far is Boston from Saint Louis?

The flight distance between Saint Louis and Boston is 1667km. Check all available flights on Wego.

When is the earliest and latest flight of the day?

The earliest flight of the day departs at 05:00. The last flight of the day departs at 18:10. See the full list of flight times on Wego.

How many airlines offer direct flights from Saint Louis to Boston?

There are 2 airlines that offer direct flights from Saint Louis to Boston. Find out the list of airlines on Wego.