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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 September , October 2026

30 Sep - 24 Oct $ 303.00
STL
St Louis
Frontier Airlines
1 STOPS
DCA
Washington
DCA
Washington
Frontier Airlines
1 STOPS
STL
St Louis
Pick dates
30 Sep - 10 Oct $ 390.00
STL
St Louis
Frontier Airlines
1 STOPS
DCA
Washington
DCA
Washington
Frontier Airlines
1 STOPS
STL
St Louis
Pick dates
30 Sep - 10 Oct $ 392.00
STL
St Louis
Frontier Airlines
1 STOPS
DCA
Washington
DCA
Washington
Frontier Airlines
1 STOPS
STL
St Louis
Pick dates

Last minute flights from St Louis to Washington

29 Sep - 30 Sep $ 557.00
STL
St Louis
United Airlines
1 STOPS
DCA
Washington
DCA
Washington
United Airlines
1 STOPS
STL
St Louis
Pick dates
29 Sep - 30 Sep $ 557.00
STL
St Louis
United Airlines
1 STOPS
DCA
Washington
DCA
Washington
United Airlines
1 STOPS
STL
St Louis
Pick dates
29 Sep - 30 Sep $ 557.00
STL
St Louis
United Airlines
1 STOPS
DCA
Washington
DCA
Washington
United Airlines
1 STOPS
STL
St Louis
Pick dates

One-way flights to Washington from St Louis

8:10 PM - 6:45 AM
Frontier Airlines
1 Stops
15h 1m
STL - DCA
$ 199
Kiwi
Pick dates
10:27 AM - 12:40 PM
United Airlines
1 Stops
4h 15m
STL - DCA
$ 278
Kiwi
Pick dates
10:27 AM - 12:40 PM
United Airlines
1 Stops
4h 15m
STL - DCA
$ 279
Kiwi
Pick dates

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.