Cheap Flights from Washington (DCA) to St. Louis (STL) from HK$2,690~

View HK$2,690 flight on Tue, 25 Nov 2025Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to St. Louis Lambert Intl. Airport (STL)

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Find Cheap Flights from Washington (DCA) to St. Louis (STL)

Prices were available within the past 7 days and start at HK$2,690 for one-way flights and HK$3,981 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, 24 Nov - Sat, 29 Nov
DCA
Washington
STL
St. Louis
HK$3,981 Return, found 23 hours ago
HK$3,981
Return
found 23 hours ago
Select American Airlines flight, departing Mon, 24 Nov from Washington to St. Louis, returning Sat, 29 Nov, priced at HK$3,981 found 23 hours ago
American Airlines
Thu, 27 Nov - Sat, 29 Nov
DCA
Washington
STL
St. Louis
HK$4,057 Return, found 23 hours ago
HK$4,057
Return
found 23 hours ago
Select American Airlines flight, departing Thu, 27 Nov from Washington to St. Louis, returning Sat, 29 Nov, priced at HK$4,057 found 23 hours ago
United
Tue, 25 Nov - Wed, 26 Nov
DCA
Washington
STL
St. Louis
HK$5,262 Return, found 23 hours ago
HK$5,262
Return
found 23 hours ago
Select United flight, departing Tue, 25 Nov from Washington to St. Louis, returning Wed, 26 Nov, priced at HK$5,262 found 23 hours ago
American Airlines
Tue, 25 Nov - Sat, 29 Nov
DCA
Washington
STL
St. Louis
HK$5,379 Return, found 23 hours ago
HK$5,379
Return
found 23 hours ago
Select American Airlines flight, departing Tue, 25 Nov from Washington to St. Louis, returning Sat, 29 Nov, priced at HK$5,379 found 23 hours ago
American Airlines
Tue, 25 Nov - Sat, 29 Nov
DCA
Washington
STL
St. Louis
HK$5,455 Return, found 23 hours ago
HK$5,455
Return
found 23 hours ago
Select American Airlines flight, departing Tue, 25 Nov from Washington to St. Louis, returning Sat, 29 Nov, priced at HK$5,455 found 23 hours ago
United
Tue, 25 Nov - Sat, 29 Nov
DCA
Washington
STL
St. Louis
HK$5,456 Return, found 23 hours ago
HK$5,456
Return
found 23 hours ago
Select United flight, departing Tue, 25 Nov from Washington to St. Louis, returning Sat, 29 Nov, priced at HK$5,456 found 23 hours ago
Delta
Tue, 25 Nov - Wed, 26 Nov
DCA
Washington
STL
St. Louis
HK$5,531 Return, found 23 hours ago
HK$5,531
Return
found 23 hours ago
Select Delta flight, departing Tue, 25 Nov from Washington to St. Louis, returning Wed, 26 Nov, priced at HK$5,531 found 23 hours ago
United
Tue, 25 Nov - Wed, 26 Nov
DCA
Washington
STL
St. Louis
HK$5,532 Return, found 23 hours ago
HK$5,532
Return
found 23 hours ago
Select United flight, departing Tue, 25 Nov from Washington to St. Louis, returning Wed, 26 Nov, priced at HK$5,532 found 23 hours ago
Delta
Tue, 25 Nov - Sat, 29 Nov
DCA
Washington
STL
St. Louis
HK$5,649 Return, found 23 hours ago
HK$5,649
Return
found 23 hours ago
Select Delta flight, departing Tue, 25 Nov from Washington to St. Louis, returning Sat, 29 Nov, priced at HK$5,649 found 23 hours ago
Delta
Tue, 25 Nov - Wed, 26 Nov
DCA
Washington
STL
St. Louis
HK$5,714 Return, found 23 hours ago
HK$5,714
Return
found 23 hours ago
Select Delta flight, departing Tue, 25 Nov from Washington to St. Louis, returning Wed, 26 Nov, priced at HK$5,714 found 23 hours ago

Find the cheapest month to fly from Washington (DCA) to St. Louis (STL)

August is typically the cheapest month to fly

From HK$909 - HK$4,641 per traveller.

Travel information

Origin airport
Ronald Reagan Washington National
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, United
Return price
HK$3,981
Distance
1147 km
Average flight time
1 hour 26 mins

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Flights from Washington to St. Louis

Book cheap flights from Washington (DCA) to St. Louis (STL) on Expedia.com.hk. Find the best flight deals to destinations around the world for your next leisure or business travel on Expedia.com.hk.

Search for flights from Washington (DCA) to St. Louis (STL) to find great flight deals suitable to your travel date and time. Expedia.com.hk flight booking search engine is simple to use and looking for cheap flights is as easy as a click of a mouse or on your mobile devices.

Be assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Washington (DCA) to St. Louis (STL) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

Save more when combine your St. Louis flight with a hotel for a package deal! Discover additional savings by booking in advance. Now you can find activities in St. Louis and things to do in St. Louis for your perfect vacation with Expedia Thing to Do.

If you would like to book flights to St. Louis more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to St. Louis is HK$2,690 now!

 

Flights from Washington to St. Louis

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