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Cheap flights from St Louis (STL) to Washington (DCA)

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1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from St Louis (STL) to Washington (DCA)

How to find the cheapest flight from St Louis (STL) to Washington (DCA)
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How to find the cheapest flight from St Louis (STL) to Washington (DCA)
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How to find the cheapest flight from St Louis (STL) to Washington (DCA)
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Cheap flights from St Louis to Washington in May , June 2026

29 May - 05 Jun $ 496.00
STL
St Louis
United Airlines
1 STOPS
DCA
Washington
DCA
Washington
United Airlines
1 STOPS
STL
St Louis
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24 May - 09 Jun $ 1,197.00
STL
St Louis
Alaska Airlines
1 STOPS
DCA
Washington
DCA
Washington
Alaska Airlines
1 STOPS
STL
St Louis
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23 May - 09 Jun $ 7,428.00
STL
St Louis
Alaska Airlines
1 STOPS
DCA
Washington
DCA
Washington
Alaska Airlines
1 STOPS
STL
St Louis
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Last minute flights from St Louis to Washington

27 May - 31 May $ 490.00
STL
St Louis
United Airlines
1 STOPS
DCA
Washington
DCA
Washington
United Airlines
1 STOPS
STL
St Louis
Pick dates
27 May - 31 May $ 490.00
STL
St Louis
United Airlines
1 STOPS
DCA
Washington
DCA
Washington
United Airlines
1 STOPS
STL
St Louis
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25 May - 31 May $ 681.00
STL
St Louis
United Airlines
1 STOPS
DCA
Washington
DCA
Washington
United Airlines
1 STOPS
STL
St Louis
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One-way flights to Washington from St Louis

10:25 AM - 12:45 PM
United Airlines
1 Stops
4h 27m
STL - DCA
$ 207
Kiwi
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7:22 AM - 10:00 AM
United Airlines
1 Stops
4h 42m
STL - DCA
$ 243
Kiwi
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1:13 PM - 6:00 PM
United Airlines
1 Stops
6h 56m
STL - DCA
$ 243
Kiwi
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How to find the cheapest flight from St Louis (STL) to Washington (DCA)

Related info for your journey
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How to find the cheapest flight from St Louis (STL) to Washington (DCA)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to Washington (DCA)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.