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 $357 round trip and CA $198 one way. Prices and availability subject to change. Additional terms may apply.

Wed, Oct 21 - Mon, Oct 26
DCA
Washington
STL
St. Louis
CA $357 Roundtrip, found 12 hours ago
CA $357
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Wed, Oct 21 from Washington to St. Louis, returning Mon, Oct 26, priced at CA $357 found 12 hours ago
Wed, Oct 21 - Mon, Oct 26
DCA
Washington
STL
St. Louis
CA $371 Roundtrip, found 12 hours ago
CA $371
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Wed, Oct 21 from Washington to St. Louis, returning Mon, Oct 26, priced at CA $371 found 12 hours ago
Wed, Oct 21 - Mon, Oct 26
DCA
Washington
STL
St. Louis
CA $385 Roundtrip, found 12 hours ago
CA $385
Roundtrip
found 12 hours ago
Select Delta flight, departing Wed, Oct 21 from Washington to St. Louis, returning Mon, Oct 26, priced at CA $385 found 12 hours ago
Wed, Oct 21 - Mon, Oct 26
DCA
Washington
STL
St. Louis
CA $398 Roundtrip, found 12 hours ago
CA $398
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Wed, Oct 21 from Washington to St. Louis, returning Mon, Oct 26, priced at CA $398 found 12 hours ago
Wed, Oct 21 - Mon, Oct 26
DCA
Washington
STL
St. Louis
CA $411 Roundtrip, found 12 hours ago
CA $411
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Wed, Oct 21 from Washington to St. Louis, returning Mon, Oct 26, priced at CA $411 found 12 hours ago
Wed, Oct 21 - Mon, Oct 26
DCA
Washington
STL
St. Louis
CA $425 Roundtrip, found 12 hours ago
CA $425
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Wed, Oct 21 from Washington to St. Louis, returning Mon, Oct 26, priced at CA $425 found 12 hours ago
Wed, Oct 21 - Mon, Oct 26
DCA
Washington
STL
St. Louis
CA $438 Roundtrip, found 12 hours ago
CA $438
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Wed, Oct 21 from Washington to St. Louis, returning Mon, Oct 26, priced at CA $438 found 12 hours ago
Wed, Oct 21 - Mon, Oct 26
DCA
Washington
STL
St. Louis
CA $444 Roundtrip, found 12 hours ago
CA $444
Roundtrip
found 12 hours ago
Select Delta flight, departing Wed, Oct 21 from Washington to St. Louis, returning Mon, Oct 26, priced at CA $444 found 12 hours ago
Wed, Oct 21 - Mon, Oct 26
DCA
Washington
STL
St. Louis
CA $452 Roundtrip, found 12 hours ago
CA $452
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Wed, Oct 21 from Washington to St. Louis, returning Mon, Oct 26, priced at CA $452 found 12 hours ago
Wed, Oct 21 - Mon, Oct 26
DCA
Washington
STL
St. Louis
CA $466 Roundtrip, found 12 hours ago
CA $466
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Wed, Oct 21 from Washington to St. Louis, returning Mon, Oct 26, priced at CA $466 found 12 hours ago
Wed, Oct 21 - Mon, Oct 26
DCA
Washington
STL
St. Louis
CA $470 Roundtrip, found 12 hours ago
CA $470
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Wed, Oct 21 from Washington to St. Louis, returning Mon, Oct 26, priced at CA $470 found 12 hours ago
Wed, Oct 21 - Mon, Oct 26
DCA
Washington
STL
St. Louis
CA $483 Roundtrip, found 12 hours ago
CA $483
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Wed, Oct 21 from Washington to St. Louis, returning Mon, Oct 26, priced at CA $483 found 12 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.
*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.