Cheap Flights From Ronald Reagan Washington National (DCA) To Lambert-St. Louis Intl. (STL)

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Cheapest Flights from Washington (DCA) to St. Louis (STL)

The cheapest flights to Lambert-St. Louis Intl. found within the past 7 days were CA $335 round trip and CA $505 one way. Prices and availability subject to change. Additional terms may apply.

Sat, Jan 24 - Tue, Jan 27
DCA
Washington
STL
St. Louis
CA $335 Roundtrip, found 2 hours ago
CA $335
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Jan 24 from Washington to St. Louis, returning Tue, Jan 27, priced at CA $335 found 2 hours ago
Sat, Jan 24 - Tue, Jan 27
DCA
Washington
STL
St. Louis
CA $338 Roundtrip, found 2 hours ago
CA $338
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Jan 24 from Washington to St. Louis, returning Tue, Jan 27, priced at CA $338 found 2 hours ago
Sat, Jan 24 - Tue, Jan 27
DCA
Washington
STL
St. Louis
CA $349 Roundtrip, found 2 hours ago
CA $349
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Jan 24 from Washington to St. Louis, returning Tue, Jan 27, priced at CA $349 found 2 hours ago
Sat, Jan 24 - Tue, Jan 27
DCA
Washington
STL
St. Louis
CA $352 Roundtrip, found 2 hours ago
CA $352
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Jan 24 from Washington to St. Louis, returning Tue, Jan 27, priced at CA $352 found 2 hours ago
Sat, Jan 24 - Tue, Jan 27
DCA
Washington
STL
St. Louis
CA $362 Roundtrip, found 2 hours ago
CA $362
Roundtrip
found 2 hours ago
Select Delta flight, departing Sat, Jan 24 from Washington to St. Louis, returning Tue, Jan 27, priced at CA $362 found 2 hours ago
Sat, Jan 24 - Tue, Jan 27
DCA
Washington
STL
St. Louis
CA $365 Roundtrip, found 2 hours ago
CA $365
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Jan 24 from Washington to St. Louis, returning Tue, Jan 27, priced at CA $365 found 2 hours ago
Sat, Jan 24 - Tue, Jan 27
DCA
Washington
STL
St. Louis
CA $435 Roundtrip, found 2 hours ago
CA $435
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Jan 24 from Washington to St. Louis, returning Tue, Jan 27, priced at CA $435 found 2 hours ago
Sat, Jan 24 - Tue, Jan 27
DCA
Washington
STL
St. Louis
CA $439 Roundtrip, found 2 hours ago
CA $439
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Jan 24 from Washington to St. Louis, returning Tue, Jan 27, priced at CA $439 found 2 hours ago
Tue, Dec 23 - Thu, Dec 25
DCA
Washington
STL
St. Louis
CA $445 Roundtrip, found 5 days ago
CA $445
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Dec 23 from Washington to St. Louis, returning Thu, Dec 25, priced at CA $445 found 5 days ago
Sat, Jan 24 - Tue, Jan 27
DCA
Washington
STL
St. Louis
CA $449 Roundtrip, found 2 hours ago
CA $449
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Jan 24 from Washington to St. Louis, returning Tue, Jan 27, priced at CA $449 found 2 hours ago
Sat, Jan 24 - Tue, Jan 27
DCA
Washington
STL
St. Louis
CA $453 Roundtrip, found 2 hours ago
CA $453
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Jan 24 from Washington to St. Louis, returning Tue, Jan 27, priced at CA $453 found 2 hours ago
Tue, Dec 23 - Thu, Dec 25
DCA
Washington
STL
St. Louis
CA $459 Roundtrip, found 5 days ago
CA $459
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Dec 23 from Washington to St. Louis, returning Thu, Dec 25, priced at CA $459 found 5 days ago
Sat, Jan 24 - Tue, Jan 27
DCA
Washington
STL
St. Louis
CA $462 Roundtrip, found 2 hours ago
CA $462
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Jan 24 from Washington to St. Louis, returning Tue, Jan 27, priced at CA $462 found 2 hours ago
Sat, Jan 24 - Tue, Jan 27
DCA
Washington
STL
St. Louis
CA $467 Roundtrip, found 2 hours ago
CA $467
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Jan 24 from Washington to St. Louis, returning Tue, Jan 27, priced at CA $467 found 2 hours ago

Frequently asked questions

Are there direct flights from Ronald Reagan Washington National Airport (DCA) to Lambert Field?
Your next unforgettable adventure is on the other side of just one flight. You can travel direct from DCA to Lambert Field with multiple airlines, including American Airlines and Southwest Airlines.
What airlines fly from Ronald Reagan Washington National Airport (DCA) to Lambert-St. Louis Intl. Airport (STL)?
If you're flying to St. Louis from Arlington, you'll find several airlines that fly direct. One of the most popular is American Airlines (AA), which has 86 flights on this route every month. A popular alternative is Southwest Airlines (WN), which has 60 flights every month. The more airlines you weigh up, the more likely you are to pick up a wonderful deal.
What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.

Popular Flight Routes from Washington (DCA)

Travelers at DCA love to visit these top cities. Roam to the top destinations from Washington (DCA) today with the cheap prices from Travelocity!

Popular Flight Routes from St. Louis (STL)

Travelers at STL love to visit these top cities. Roam to the top destinations from St. Louis(STL) today with the cheap prices from Travelocity!

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.