$85 Cheap flights from Ronald Reagan Washington National to Lambert-St. Louis Intl. (DCA to STL)

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Find The Best Dates To Fly from Ronald Reagan Washington National to Lambert-St. Louis Intl.

Amazing DCA to STL Flight Deals

The cheapest flights to Lambert-St. Louis Intl. found within the past 7 days were $160 round trip and $85 one way. Prices and availability subject to change. Additional terms may apply.

Tue, Jun 4 - Tue, Jun 4
DCA
Washington
STL
St. Louis
$160 Roundtrip, found 3 days ago
$160
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Tue, Jun 4 from Washington to St. Louis, returning Tue, Jun 4, priced at $160 found 3 days ago
Tue, Jul 2 - Wed, Jul 3
DCA
Washington
STL
St. Louis
$169 Roundtrip, found 6 days ago
$169
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Jul 2 from Washington to St. Louis, returning Wed, Jul 3, priced at $169 found 6 days ago
Mon, Jul 1 - Wed, Jul 17
DCA
Washington
STL
St. Louis
$188 Roundtrip, found 8 hours ago
$188
Roundtrip
found 8 hours ago
Select Delta flight, departing Mon, Jul 1 from Washington to St. Louis, returning Wed, Jul 17, priced at $188 found 8 hours ago
Wed, Jul 24 - Sat, Jul 27
DCA
Washington
STL
St. Louis
$189 Roundtrip, found 1 day ago
$189
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Jul 24 from Washington to St. Louis, returning Sat, Jul 27, priced at $189 found 1 day ago
Tue, Jun 25 - Mon, Jul 1
DCA
Washington
STL
St. Louis
$192 Roundtrip, found 4 days ago
$192
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Jun 25 from Washington to St. Louis, returning Mon, Jul 1, priced at $192 found 4 days ago
Tue, Jun 11 - Tue, Jun 18
DCA
Washington
STL
St. Louis
$194 Roundtrip, found 3 days ago
$194
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Jun 11 from Washington to St. Louis, returning Tue, Jun 18, priced at $194 found 3 days ago
Tue, Jun 11 - Mon, Jul 1
DCA
Washington
STL
St. Louis
$198 Roundtrip, found 6 days ago
$198
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Jun 11 from Washington to St. Louis, returning Mon, Jul 1, priced at $198 found 6 days ago
Sun, Jun 23 - Mon, Jun 24
DCA
Washington
STL
St. Louis
$198 Roundtrip, found 6 days ago
$198
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sun, Jun 23 from Washington to St. Louis, returning Mon, Jun 24, priced at $198 found 6 days ago
Mon, Sep 23 - Fri, Sep 27
DCA
Washington
STL
St. Louis
$199 Roundtrip, found 21 hours ago
$199
Roundtrip
found 21 hours ago
Select American Airlines flight, departing Mon, Sep 23 from Washington to St. Louis, returning Fri, Sep 27, priced at $199 found 21 hours ago
Tue, Jun 25 - Mon, Jul 1
DCA
Washington
STL
St. Louis
$201 Roundtrip, found 4 days ago
$201
Roundtrip
found 4 days ago
Select United flight, departing Tue, Jun 25 from Washington to St. Louis, returning Mon, Jul 1, priced at $201 found 4 days ago

Frequently asked questions

Can I catch a flight from DCA to Lambert Field right now?
Be sure to visit the Covid-19 Travel Advisor to find out if there are any present travel advice reports and quarantine requirements in place in Lambert Field when jet-setting from National Airport.
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.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Lambert-St. Louis Intl. Airport (STL), please visit our Customer Service Portal.
How long is the flight from DCA to St. Louis Lambert International Airport?
On average, flying from National Airport to Lambert-St. Louis Intl. Airport (STL) takes just 2 hours and 18 minutes in total. Use the short trip to rest your eyes or listen to a podcast before the next part of your trip begins.
What is the flight distance from Ronald Reagan Washington National Airport (DCA) to Lambert-St. Louis Intl. Airport (STL)?
The flight distance from National Airport to Lambert Field is a quick 720 mi. You’ll be disembarking the plane at your destination in a flash.
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 airlines have practices regarding COVID-19 in place and use social distancing?
From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with Southwest Airlines, American Airlines or Delta you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity 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 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

 

Traveling From
Ronald Reagan Washington National
Traveling To
Lambert-St. Louis Intl.
Shortest Flight Time
2 hours 10 mins
Earliest Departure Time
7:20AM EDT
Latest Departure Time
7:45PM EDT
Lowest Flight Price
$160

Route Info

Flight path for flights from Ronald Reagan National Airport to Lambert-St. Louis International Airport


Origin:
DCA - Ronald Reagan National Airport
Destination:
STL - Lambert-St. Louis International Airport
Distance:
721.00 miles


Airlines & Aircraft Used on DCA to STL Flight Routes


Airline Carrier
Aircraft
American Airlines
Airbus A320-100/200
American Airlines
Boeing 737-500 pax
American Airlines
Boeing 737-600 pax
American Airlines
Embraer 190
American Airlines
Fairchild Dornier Do.328
Delta Air Lines
Airbus A319
Delta Air Lines
Airbus A320-100/200
United Airlines
Airbus A321-100/200

Discover our best flights from Washington DCA to St. Louis STL. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 

 

Find our best return flights from Washington DCA to St. Louis STL at the right price  

Airfares to St. Louis STL from Washington DCA currently cost between $160 and $201. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way flights from Washington DCA to St. Louis STL 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Washington DCA to St. Louis STL on Travelocity starting at $85. Prices and availability subject to change. Additional terms may apply. 

 

Get to St. Louis STL from Washington DCA quicker with direct flights. 

Get to St. Louis faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to STL from DCA to take around 2 hour(s) 10 min(s).  

 

Find our cheapest airfares for flights from Washington DCA to St. Louis STL

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to STL from DCA. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  

 

Get our best airfare deals for your flight from Washington DCA to St. Louis STL today 

If you’re flexible about when you travel, June is usually the cheapest month to fly from Washington DCA to St. Louis STL. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 

 

Book flexible airline tickets for flights to St. Louis STL from Washington DCA 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to STL from DCA have this option.  

 

Travel with confidence when you book flights to St. Louis STL from Washington DCA with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*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.