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 $437 round trip and CA $359 one way. Prices and availability subject to change. Additional terms may apply.

Fri, Oct 9 - Sun, Oct 11
DCA
Washington
STL
St. Louis
CA $437 Roundtrip, found 14 hours ago
CA $437
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Fri, Oct 9 from Washington to St. Louis, returning Sun, Oct 11, priced at CA $437 found 14 hours ago
Fri, Oct 9 - Sun, Oct 11
DCA
Washington
STL
St. Louis
CA $451 Roundtrip, found 14 hours ago
CA $451
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Fri, Oct 9 from Washington to St. Louis, returning Sun, Oct 11, priced at CA $451 found 14 hours ago
Fri, Oct 9 - Sun, Oct 11
DCA
Washington
STL
St. Louis
CA $485 Roundtrip, found 14 hours ago
CA $485
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Fri, Oct 9 from Washington to St. Louis, returning Sun, Oct 11, priced at CA $485 found 14 hours ago
Fri, Oct 9 - Sun, Oct 11
DCA
Washington
STL
St. Louis
CA $499 Roundtrip, found 14 hours ago
CA $499
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Fri, Oct 9 from Washington to St. Louis, returning Sun, Oct 11, priced at CA $499 found 14 hours ago
Fri, Oct 9 - Sun, Oct 11
DCA
Washington
STL
St. Louis
CA $548 Roundtrip, found 14 hours ago
CA $548
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Fri, Oct 9 from Washington to St. Louis, returning Sun, Oct 11, priced at CA $548 found 14 hours ago
Fri, Oct 9 - Sun, Oct 11
DCA
Washington
STL
St. Louis
CA $549 Roundtrip, found 14 hours ago
CA $549
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Fri, Oct 9 from Washington to St. Louis, returning Sun, Oct 11, priced at CA $549 found 14 hours ago
Fri, Oct 9 - Sun, Oct 11
DCA
Washington
STL
St. Louis
CA $562 Roundtrip, found 14 hours ago
CA $562
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Fri, Oct 9 from Washington to St. Louis, returning Sun, Oct 11, priced at CA $562 found 14 hours ago
Fri, Oct 9 - Sun, Oct 11
DCA
Washington
STL
St. Louis
CA $563 Roundtrip, found 14 hours ago
CA $563
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Fri, Oct 9 from Washington to St. Louis, returning Sun, Oct 11, priced at CA $563 found 14 hours ago
Fri, Oct 9 - Sun, Oct 11
DCA
Washington
STL
St. Louis
CA $586 Roundtrip, found 14 hours ago
CA $586
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Fri, Oct 9 from Washington to St. Louis, returning Sun, Oct 11, priced at CA $586 found 14 hours ago
Fri, Oct 9 - Sun, Oct 11
DCA
Washington
STL
St. Louis
CA $597 Roundtrip, found 14 hours ago
CA $597
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Fri, Oct 9 from Washington to St. Louis, returning Sun, Oct 11, priced at CA $597 found 14 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.