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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

23 Sep - 24 Oct $ 258.00
STL
St Louis
Frontier Airlines
1 STOPS
DCA
Washington
DCA
Washington
Frontier Airlines
1 STOPS
STL
St Louis
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14 Sep - 10 Oct $ 298.00
STL
St Louis
Frontier Airlines
1 STOPS
DCA
Washington
DCA
Washington
Frontier Airlines
1 STOPS
STL
St Louis
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13 Sep - 10 Oct $ 578.00
STL
St Louis
Frontier Airlines
1 STOPS
DCA
Washington
DCA
Washington
Frontier Airlines
1 STOPS
STL
St Louis
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Last minute flights from St Louis to Washington

23 Sep - 30 Sep $ 239.00
STL
St Louis
Frontier Airlines
1 STOPS
DCA
Washington
DCA
Washington
Frontier Airlines
1 STOPS
STL
St Louis
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14 Sep - 30 Sep $ 279.00
STL
St Louis
Frontier Airlines
1 STOPS
DCA
Washington
DCA
Washington
Frontier Airlines
1 STOPS
STL
St Louis
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13 Sep - 30 Sep $ 559.00
STL
St Louis
Frontier Airlines
1 STOPS
DCA
Washington
DCA
Washington
Frontier Airlines
1 STOPS
STL
St Louis
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One-way flights to Washington from St Louis

8:10 PM - 11:23 AM
Frontier Airlines
1 Stops
19h 49m
STL - DCA
$ 163
Kiwi
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10:27 AM - 12:40 PM
United Airlines
1 Stops
4h 15m
STL - DCA
$ 207
Kiwi
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5:30 PM - 7:47 PM
United Airlines
1 Stops
4h 24m
STL - DCA
$ 292
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.