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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 January , February 2026

30 Jan - 25 Feb $ 246.00
STL
St Louis
Frontier Airlines
1 STOPS
DCA
Washington
DCA
Washington
Frontier Airlines
1 STOPS
STL
St Louis
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21 Jan - 03 Feb $ 895.00
STL
St Louis
Alaska Airlines
1 STOPS
DCA
Washington
DCA
Washington
Alaska Airlines
1 STOPS
STL
St Louis
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17 Jan - 06 Feb $ 1,300.00
STL
St Louis
Hawaiian Airlines
1 STOPS
DCA
Washington
DCA
Washington
Hawaiian Airlines
1 STOPS
STL
St Louis
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Last minute flights from St Louis to Washington

27 Jan - 31 Jan $ 557.00
STL
St Louis
United Airlines
1 STOPS
DCA
Washington
DCA
Washington
United Airlines
1 STOPS
STL
St Louis
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21 Jan - 01 Feb $ 1,140.00
STL
St Louis
Alaska Airlines
1 STOPS
DCA
Washington
DCA
Washington
Alaska Airlines
1 STOPS
STL
St Louis
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17 Jan - 01 Feb $ 1,286.00
STL
St Louis
Alaska Airlines
1 STOPS
DCA
Washington
DCA
Washington
Alaska Airlines
1 STOPS
STL
St Louis
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One-way flights to Washington from St Louis

7:39 PM - 7:35 AM
Frontier Airlines
1 Stops
16h 23m
STL - DCA
$ 165
Kiwi
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6:30 AM - 9:00 AM
United Airlines
1 Stops
4h 28m
STL - DCA
$ 355
Kiwi
Pick dates
6:30 AM - 9:00 AM
United Airlines
1 Stops
4h 28m
STL - DCA
$ 355
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.