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 $1,164 round trip and CA $197 one way. Prices and availability subject to change. Additional terms may apply.

Sat, Nov 7 - Mon, Nov 9
DCA
Washington
STL
St. Louis
CA $1,164 Roundtrip, found 5 days ago
CA $1,164
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sat, Nov 7 from Washington to St. Louis, returning Mon, Nov 9, priced at CA $1,164 found 5 days ago
Sat, Nov 7 - Mon, Nov 9
DCA
Washington
STL
St. Louis
CA $1,172 Roundtrip, found 5 days ago
CA $1,172
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sat, Nov 7 from Washington to St. Louis, returning Mon, Nov 9, priced at CA $1,172 found 5 days ago
Mon, Nov 2 - Wed, Nov 4
DCA
Washington
STL
St. Louis
CA $1,462 Roundtrip, found 4 days ago
CA $1,462
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Mon, Nov 2 from Washington to St. Louis, returning Wed, Nov 4, priced at CA $1,462 found 4 days ago
Mon, Nov 2 - Wed, Nov 4
DCA
Washington
STL
St. Louis
CA $1,470 Roundtrip, found 4 days ago
CA $1,470
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Mon, Nov 2 from Washington to St. Louis, returning Wed, Nov 4, priced at CA $1,470 found 4 days ago
Fri, Nov 6 - Sun, Nov 8
DCA
Washington
STL
St. Louis
CA $1,891 Roundtrip, found 2 days ago
CA $1,891
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, Nov 6 from Washington to St. Louis, returning Sun, Nov 8, priced at CA $1,891 found 2 days ago
Fri, Nov 6 - Sun, Nov 8
DCA
Washington
STL
St. Louis
CA $1,899 Roundtrip, found 2 days ago
CA $1,899
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, Nov 6 from Washington to St. Louis, returning Sun, Nov 8, priced at CA $1,899 found 2 days ago
Mon, Nov 16 - Thu, Nov 19
DCA
Washington
STL
St. Louis
CA $2,091 Roundtrip, found 5 hours ago
CA $2,091
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Mon, Nov 16 from Washington to St. Louis, returning Thu, Nov 19, priced at CA $2,091 found 5 hours ago
Thu, Nov 5 - Mon, Nov 9
DCA
Washington
STL
St. Louis
CA $2,137 Roundtrip, found 3 days ago
CA $2,137
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Thu, Nov 5 from Washington to St. Louis, returning Mon, Nov 9, priced at CA $2,137 found 3 days ago
Thu, Nov 5 - Mon, Nov 9
DCA
Washington
STL
St. Louis
CA $2,387 Roundtrip, found 3 days ago
CA $2,387
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Thu, Nov 5 from Washington to St. Louis, returning Mon, Nov 9, priced at CA $2,387 found 3 days ago
Mon, Nov 2 - Wed, Nov 4
DCA
Washington
STL
St. Louis
CA $2,429 Roundtrip, found 4 days ago
CA $2,429
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Mon, Nov 2 from Washington to St. Louis, returning Wed, Nov 4, priced at CA $2,429 found 4 days 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.