Fare Guide
Estimated lowest fares found within 7 days
The cheapest airline(s) flying from Saint Louis to Washington is Frontier Airlines.
Travel Period: January 2025 - December 2025
The cheapest month(s) to fly from Saint Louis to Washington is February.
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Jan 2025
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Feb 2025
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Mar 2025
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Apr 2025
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May 2025
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Jun 2025
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Jul 2025
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Aug 2025
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Sep 2025
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Oct 2025
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Nov 2025
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Dec 2025
The cheapest day(s) of the week to fly from Saint Louis to Washington is Friday.
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Sun Sunday
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Mon Monday
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Tue Tuesday
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Wed Wednesday
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Thu Thursday
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Fri Friday
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Sat Saturday
Flight Schedules
Last Updated: Mon, 2 Dec, 2024
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Time
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18:10 STL21:05 BWI1Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 18:10 - BWI 21:05 1h 55m Direct
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STLSt Louis Lambert Intl Airport 18:10
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BWIBaltimore Washington International Airport 21:05
- 1h 55m
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Southwest Airlines (WN 4604)Boeing 737 Max 8 Passenger -
Southwest Airlines (WN 4604) -
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- Boeing 737 Max 8 Passenger
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18:50 STL21:45 DCA1Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 18:50 - DCA 21:45 1h 55m Direct
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STLSt Louis Lambert Intl Airport 18:50
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DCAWashington Ronald Reagan National Airport 21:45
- 1h 55m
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Southwest Airlines (WN 457)Boeing 737 700 -
Southwest Airlines (WN 457) -
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- Boeing 737 700
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19:05 STL22:00 DCA1Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 19:05 - DCA 22:00 1h 55m Direct
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STLSt Louis Lambert Intl Airport 19:05
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DCAWashington Ronald Reagan National Airport 22:00
- 1h 55m
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Southwest Airlines (WN 457)Boeing 737 Max 8 Passenger -
Southwest Airlines (WN 457) -
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19:55 STL22:50 DCA1Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 19:55 - DCA 22:50 1h 55m Direct
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STLSt Louis Lambert Intl Airport 19:55
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DCAWashington Ronald Reagan National Airport 22:50
- 1h 55m
- Direct
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Southwest Airlines (WN 457)Boeing 737 Max 8 Passenger -
Southwest Airlines (WN 457) -
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20:15 STL23:10 BWI1Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 20:15 - BWI 23:10 1h 55m Direct
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STLSt Louis Lambert Intl Airport 20:15
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BWIBaltimore Washington International Airport 23:10
- 1h 55m
- Direct
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Southwest Airlines (WN 2309)Boeing 737 800 -
Southwest Airlines (WN 2309) -
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20:40 STL23:35 BWI1Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 20:40 - BWI 23:35 1h 55m Direct
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STLSt Louis Lambert Intl Airport 20:40
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BWIBaltimore Washington International Airport 23:35
- 1h 55m
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Southwest Airlines (WN 2998)Boeing 737 Max 8 Passenger -
Southwest Airlines (WN 2998) -
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- Boeing 737 Max 8 Passenger
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20:40 STL01:05 BWI3Hrs, 25m Direct
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STLSt Louis Lambert Intl Airport 20:40 - BWI 01:05 3h 25m Direct
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STLSt Louis Lambert Intl Airport 20:40
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BWIBaltimore Washington International Airport 01:05
- 3h 25m
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Southwest Airlines (WN 4311)Boeing 737 700 -
Southwest Airlines (WN 4311) -
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- Boeing 737 700
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21:25 STL00:20 BWI1Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 21:25 - BWI 00:20 1h 55m Direct
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STLSt Louis Lambert Intl Airport 21:25
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BWIBaltimore Washington International Airport 00:20
- 1h 55m
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Southwest Airlines (WN 4604)Boeing 737 700 -
Southwest Airlines (WN 4604) -
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- Boeing 737 700
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05:10 STL08:10 BWI2Hrs, 00m Direct
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STLSt Louis Lambert Intl Airport 05:10 - BWI 08:10 2h Direct
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STLSt Louis Lambert Intl Airport 05:10
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BWIBaltimore Washington International Airport 08:10
- 2h
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Southwest Airlines (WN 4468)Boeing 737 700 -
Southwest Airlines (WN 4468) -
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05:10 STL08:10 BWI2Hrs, 00m Direct
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STLSt Louis Lambert Intl Airport 05:10 - BWI 08:10 2h Direct
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STLSt Louis Lambert Intl Airport 05:10
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BWIBaltimore Washington International Airport 08:10
- 2h
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Southwest Airlines (WN 1652)Boeing 737 700 -
Southwest Airlines (WN 1652) -
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- Boeing 737 700
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05:50 STL08:50 BWI2Hrs, 00m Direct
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STLSt Louis Lambert Intl Airport 05:50 - BWI 08:50 2h Direct
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STLSt Louis Lambert Intl Airport 05:50
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BWIBaltimore Washington International Airport 08:50
- 2h
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Southwest Airlines (WN 399)Boeing 737 700 -
Southwest Airlines (WN 399) -
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- Boeing 737 700
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06:10 STL09:18 DCA2Hrs, 08m Direct
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STLSt Louis Lambert Intl Airport 06:10 - DCA 09:18 2h 08m Direct
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STLSt Louis Lambert Intl Airport 06:10
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DCAWashington Ronald Reagan National Airport 09:18
- 2h 08m
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American Airlines (AA 4360)Embraer Emb 175 -
American Airlines (AA 4360) -
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06:15 STL09:19 DCA2Hrs, 04m Direct
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STLSt Louis Lambert Intl Airport 06:15 - DCA 09:19 2h 04m Direct
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STLSt Louis Lambert Intl Airport 06:15
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DCAWashington Ronald Reagan National Airport 09:19
- 2h 04m
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American Airlines (AA 5468)Crj 700 Canadair Regional -
American Airlines (AA 5468) -
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06:15 STL09:19 DCA2Hrs, 04m Direct
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STLSt Louis Lambert Intl Airport 06:15 - DCA 09:19 2h 04m Direct
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STLSt Louis Lambert Intl Airport 06:15
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DCAWashington Ronald Reagan National Airport 09:19
- 2h 04m
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American Airlines (AA 4360)Embraer Emb 175 -
American Airlines (AA 4360) -
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- Embraer Emb 175
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06:20 STL09:20 BWI2Hrs, 00m Direct
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STLSt Louis Lambert Intl Airport 06:20 - BWI 09:20 2h Direct
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STLSt Louis Lambert Intl Airport 06:20
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BWIBaltimore Washington International Airport 09:20
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Southwest Airlines (WN 399)Boeing 737 700 -
Southwest Airlines (WN 399) -
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07:45 STL12:10 BWI3Hrs, 25m Direct
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STLSt Louis Lambert Intl Airport 07:45 - BWI 12:10 3h 25m Direct
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STLSt Louis Lambert Intl Airport 07:45
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BWIBaltimore Washington International Airport 12:10
- 3h 25m
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Southwest Airlines (WN 714)Boeing 737 700 -
Southwest Airlines (WN 714) -
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08:05 STL11:00 DCA1Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 08:05 - DCA 11:00 1h 55m Direct
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STLSt Louis Lambert Intl Airport 08:05
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DCAWashington Ronald Reagan National Airport 11:00
- 1h 55m
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Southwest Airlines (WN 1352)Boeing 737 Max 8 Passenger -
Southwest Airlines (WN 1352) -
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08:25 STL11:43 IAD2Hrs, 18m Direct
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STLSt Louis Lambert Intl Airport 08:25 - IAD 11:43 2h 18m Direct
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STLSt Louis Lambert Intl Airport 08:25
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IADWashington Dulles International Airport 11:43
- 2h 18m
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United Airlines (UA 4506)Canadair Regional Jet 550 -
United Airlines (UA 4506) -
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- Canadair Regional Jet 550
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08:25 STL11:36 IAD2Hrs, 11m Direct
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STLSt Louis Lambert Intl Airport 08:25 - IAD 11:36 2h 11m Direct
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STLSt Louis Lambert Intl Airport 08:25
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IADWashington Dulles International Airport 11:36
- 2h 11m
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United Airlines (UA 4506)Canadair Regional Jet 550 -
United Airlines (UA 4506) -
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08:30 STL11:25 DCA1Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 08:30 - DCA 11:25 1h 55m Direct
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STLSt Louis Lambert Intl Airport 08:30
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DCAWashington Ronald Reagan National Airport 11:25
- 1h 55m
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Southwest Airlines (WN 1352)Boeing 737 700 -
Southwest Airlines (WN 1352) -
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08:35 STL11:30 DCA1Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 08:35 - DCA 11:30 1h 55m Direct
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STLSt Louis Lambert Intl Airport 08:35
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DCAWashington Ronald Reagan National Airport 11:30
- 1h 55m
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Southwest Airlines (WN 1352)Boeing 737 800 -
Southwest Airlines (WN 1352) -
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08:50 STL11:45 DCA1Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 08:50 - DCA 11:45 1h 55m Direct
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STLSt Louis Lambert Intl Airport 08:50
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DCAWashington Ronald Reagan National Airport 11:45
- 1h 55m
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Southwest Airlines (WN 1207)Boeing 737 Max 8 Passenger -
Southwest Airlines (WN 1207) -
- M
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- Boeing 737 Max 8 Passenger
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09:15 STL12:15 BWI2Hrs, 00m Direct
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STLSt Louis Lambert Intl Airport 09:15 - BWI 12:15 2h Direct
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STLSt Louis Lambert Intl Airport 09:15
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BWIBaltimore Washington International Airport 12:15
- 2h
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Southwest Airlines (WN 4604)Boeing 737 700 -
Southwest Airlines (WN 4604) -
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09:40 STL15:10 DCA4Hrs, 30m Direct
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STLSt Louis Lambert Intl Airport 09:40 - DCA 15:10 4h 30m Direct
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STLSt Louis Lambert Intl Airport 09:40
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DCAWashington Ronald Reagan National Airport 15:10
- 4h 30m
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Southwest Airlines (WN 4809)Boeing 737 700 -
Southwest Airlines (WN 4809) -
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- Boeing 737 700
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09:45 STL18:35 DCA7Hrs, 50m Direct
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STLSt Louis Lambert Intl Airport 09:45 - DCA 18:35 7h 50m Direct
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STLSt Louis Lambert Intl Airport 09:45
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DCAWashington Ronald Reagan National Airport 18:35
- 7h 50m
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Southwest Airlines (WN 1470)Boeing 737 700 -
Southwest Airlines (WN 1470) -
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- F
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- Boeing 737 700
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09:51 STL12:59 DCA2Hrs, 08m Direct
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STLSt Louis Lambert Intl Airport 09:51 - DCA 12:59 2h 08m Direct
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STLSt Louis Lambert Intl Airport 09:51
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DCAWashington Ronald Reagan National Airport 12:59
- 2h 08m
- Direct
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American Airlines (AA 4458)Embraer Emb 175 -
American Airlines (AA 4458) -
- M
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- Embraer Emb 175
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10:38 STL13:42 DCA2Hrs, 04m Direct
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STLSt Louis Lambert Intl Airport 10:38 - DCA 13:42 2h 04m Direct
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STLSt Louis Lambert Intl Airport 10:38
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DCAWashington Ronald Reagan National Airport 13:42
- 2h 04m
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American Airlines (AA 4458)Embraer Emb 175 -
American Airlines (AA 4458) -
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- Embraer Emb 175
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11:15 STL14:15 BWI2Hrs, 00m Direct
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STLSt Louis Lambert Intl Airport 11:15 - BWI 14:15 2h Direct
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STLSt Louis Lambert Intl Airport 11:15
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BWIBaltimore Washington International Airport 14:15
- 2h
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Southwest Airlines (WN 2543)Boeing 737 700 -
Southwest Airlines (WN 2543) -
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- Boeing 737 700
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11:25 STL14:25 DCA2Hrs, 00m Direct
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STLSt Louis Lambert Intl Airport 11:25 - DCA 14:25 2h Direct
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STLSt Louis Lambert Intl Airport 11:25
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DCAWashington Ronald Reagan National Airport 14:25
- 2h
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Southwest Airlines (WN 2630)Boeing 737 700 -
Southwest Airlines (WN 2630) -
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- Boeing 737 700
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12:25 STL15:20 BWI1Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 12:25 - BWI 15:20 1h 55m Direct
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STLSt Louis Lambert Intl Airport 12:25
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BWIBaltimore Washington International Airport 15:20
- 1h 55m
- Direct
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Southwest Airlines (WN 3342)Boeing 737 700 -
Southwest Airlines (WN 3342) -
- M
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13:00 STL16:00 DCA2Hrs, 00m Direct
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STLSt Louis Lambert Intl Airport 13:00 - DCA 16:00 2h Direct
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STLSt Louis Lambert Intl Airport 13:00
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DCAWashington Ronald Reagan National Airport 16:00
- 2h
- Direct
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Southwest Airlines (WN 2630)Boeing 737 700 -
Southwest Airlines (WN 2630) -
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- Boeing 737 700
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13:05 STL16:13 IAD2Hrs, 08m Direct
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STLSt Louis Lambert Intl Airport 13:05 - IAD 16:13 2h 08m Direct
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STLSt Louis Lambert Intl Airport 13:05
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IADWashington Dulles International Airport 16:13
- 2h 08m
- Direct
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United Airlines (UA 4454)Canadair Regional Jet 550 -
United Airlines (UA 4454) -
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- -
- -
- T
- F
- S
- S
- Canadair Regional Jet 550
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13:05 STL16:05 DCA2Hrs, 00m Direct
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STLSt Louis Lambert Intl Airport 13:05 - DCA 16:05 2h Direct
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STLSt Louis Lambert Intl Airport 13:05
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DCAWashington Ronald Reagan National Airport 16:05
- 2h
- Direct
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Southwest Airlines (WN 255)Boeing 737 700 -
Southwest Airlines (WN 255) -
- M
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- T
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- Boeing 737 700
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13:10 STL16:18 IAD2Hrs, 08m Direct
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STLSt Louis Lambert Intl Airport 13:10 - IAD 16:18 2h 08m Direct
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STLSt Louis Lambert Intl Airport 13:10
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IADWashington Dulles International Airport 16:18
- 2h 08m
- Direct
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United Airlines (UA 4454)Canadair Regional Jet 550 -
United Airlines (UA 4454) -
- M
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- Canadair Regional Jet 550
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15:05 STL20:00 BWI3Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 15:05 - BWI 20:00 3h 55m Direct
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STLSt Louis Lambert Intl Airport 15:05
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BWIBaltimore Washington International Airport 20:00
- 3h 55m
- Direct
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Southwest Airlines (WN 3661)Boeing 737 700 -
Southwest Airlines (WN 3661) -
- M
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- Boeing 737 700
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15:10 STL18:10 BWI2Hrs, 00m Direct
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STLSt Louis Lambert Intl Airport 15:10 - BWI 18:10 2h Direct
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STLSt Louis Lambert Intl Airport 15:10
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BWIBaltimore Washington International Airport 18:10
- 2h
- Direct
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Southwest Airlines (WN 399)Boeing 737 700 -
Southwest Airlines (WN 399) -
- -
- -
- -
- -
- F
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- S
- Boeing 737 700
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15:20 STL18:20 DCA2Hrs, 00m Direct
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STLSt Louis Lambert Intl Airport 15:20 - DCA 18:20 2h Direct
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STLSt Louis Lambert Intl Airport 15:20
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DCAWashington Ronald Reagan National Airport 18:20
- 2h
- Direct
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Southwest Airlines (WN 2059)Boeing 737 700 -
Southwest Airlines (WN 2059) -
- -
- -
- -
- T
- -
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- Boeing 737 700
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15:30 STL18:30 DCA2Hrs, 00m Direct
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STLSt Louis Lambert Intl Airport 15:30 - DCA 18:30 2h Direct
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STLSt Louis Lambert Intl Airport 15:30
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DCAWashington Ronald Reagan National Airport 18:30
- 2h
- Direct
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Southwest Airlines (WN 2059)Boeing 737 700 -
Southwest Airlines (WN 2059) -
- M
- T
- W
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- Boeing 737 700
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15:50 STL20:45 DCA3Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 15:50 - DCA 20:45 3h 55m Direct
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STLSt Louis Lambert Intl Airport 15:50
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DCAWashington Ronald Reagan National Airport 20:45
- 3h 55m
- Direct
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Southwest Airlines (WN 4179)Boeing 737 700 -
Southwest Airlines (WN 4179) -
- -
- -
- -
- -
- -
- S
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- Boeing 737 700
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16:00 STL18:55 DCA1Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 16:00 - DCA 18:55 1h 55m Direct
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STLSt Louis Lambert Intl Airport 16:00
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DCAWashington Ronald Reagan National Airport 18:55
- 1h 55m
- Direct
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Southwest Airlines (WN 2059)Boeing 737 700 -
Southwest Airlines (WN 2059) -
- -
- -
- -
- -
- F
- S
- S
- Boeing 737 700
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17:00 STL22:00 BWI4Hrs, 00m Direct
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STLSt Louis Lambert Intl Airport 17:00 - BWI 22:00 4h Direct
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STLSt Louis Lambert Intl Airport 17:00
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BWIBaltimore Washington International Airport 22:00
- 4h
- Direct
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Southwest Airlines (WN 779)Boeing 737 700 -
Southwest Airlines (WN 779) -
- -
- -
- -
- -
- F
- -
- S
- Boeing 737 700
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17:15 STL20:10 BWI1Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 17:15 - BWI 20:10 1h 55m Direct
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STLSt Louis Lambert Intl Airport 17:15
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BWIBaltimore Washington International Airport 20:10
- 1h 55m
- Direct
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Southwest Airlines (WN 3961)Boeing 737 Max 8 Passenger -
Southwest Airlines (WN 3961) -
- -
- -
- -
- -
- -
- S
- -
- Boeing 737 Max 8 Passenger
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17:20 STL20:15 BWI1Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 17:20 - BWI 20:15 1h 55m Direct
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STLSt Louis Lambert Intl Airport 17:20
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BWIBaltimore Washington International Airport 20:15
- 1h 55m
- Direct
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Southwest Airlines (WN 4606)Boeing 737 700 -
Southwest Airlines (WN 4606) -
- -
- -
- -
- T
- -
- -
- -
- Boeing 737 700
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17:40 STL22:35 DCA3Hrs, 55m Direct
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STLSt Louis Lambert Intl Airport 17:40 - DCA 22:35 3h 55m Direct
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STLSt Louis Lambert Intl Airport 17:40
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DCAWashington Ronald Reagan National Airport 22:35
- 3h 55m
- Direct
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Southwest Airlines (WN 3678)Boeing 737 700 -
Southwest Airlines (WN 3678) -
- -
- -
- -
- T
- -
- -
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- Boeing 737 700
The fastest flight time for direct flights from Saint Louis to Washington is 1 hour 55 minutes. Check latest flight schedules & prices on Wego.
The most popular airline flying from Saint Louis to Washington is Southwest Airlines. Find the latest flight deals on Wego.
The flight distance between Saint Louis and Washington is 1141km. Check all available flights on Wego.
The earliest flight of the day departs at 05:10. The last flight of the day departs at 18:10. See the full list of flight times on Wego.
There are 3 airlines that offer direct flights from Saint Louis to Washington. Find out the list of airlines on Wego.
All Airports in Saint Louis
All Airports in Washington
Popular Airlines Flying From Saint Louis to Washington
Popular Destinations From Washington
Popular Destinations From Saint Louis
Popular Hotels in Washington
- The Ritz-Carlton, Washington, D.C.
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- Sofitel Washington DC Lafayette Square
- The Henley Park Hotel
- Cambria Hotel Washington D.C. Capitol Riverfront
- Hotel Washington