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Uncover the best deals on Washington to St Louis flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest DCA - STL Flights
Useful information for finding best airline tickets from Ronald Reagan Washington National to Lambert St Louis International on your next trip.
Cheapest Round Trip Flight
$151
Delta Airlines
• 1 stop
• 13h 43m
Nov 26 – Dec 01
The cheapest round trip flight from Washington to St Louis (DCA-STL-DCA) is currently $151
Cheapest Direct Flight
$187
Southwest Airlines
• nonstop
• 3h 45m
Nov 26
The cheapest nonstop flight from Washington to St Louis (DCA-STL) is currently $187
Fastest Flight
3h 40m
The fastest nonstop flight from Washington to St Louis (DCA-STL) takes 3h 40m
Top Airlines Flying from Washington to St Louis
Latest Flight Deals from Washington (DCA) to St Louis (STL)
Compare and book low fare round-trip air tickets from Washington to St Louis. Ideal for travelers with confirmed return itineraries.
Nov 26 - Dec 01, Economy
Washington → St Louis
13h 43m
6:00 AM - 1:23 PM • 1 stop
Washington → St Louis
10h 16m
10:04 AM - 5:20 PM • 1 stop
Delta Airlines
Nov 26 - Dec 01, Economy
Washington → St Louis
14h 3m
12:26 PM - 8:09 PM • 1 stop
Washington → St Louis
10h 16m
10:04 AM - 5:20 PM • 1 stop
Delta Airlines
Nov 26 - Dec 01, Economy
Washington → St Louis
11h 49m
2:00 PM - 8:09 PM • 1 stop
Washington → St Louis
18h 21m
7:18 PM - 7:19 AM • 2 stops
Delta Airlines
Nov 26 - Dec 01, Economy
Washington → St Louis
13h 55m
6:10 AM - 1:45 PM • 1 stop
Washington → St Louis
2h 35m
7:15 PM - 10:10 PM • nonstop
Southwest Airlines
Nov 26 - Dec 01, Economy
Washington → St Louis
13h 50m
9:25 AM - 4:55 PM • 1 stop
Washington → St Louis
2h 35m
7:15 PM - 10:10 PM • nonstop
Southwest Airlines
Looking for the fastest way to St Louis? These direct flight options from DCA to STL offer both convenience and value—no layovers, just straight to your destination.
Nov 26 - Dec 01, Economy
Washington → St Louis
3h 45m
7:25 AM - 8:50 AM • nonstop
Washington → St Louis
2h 35m
1:25 PM - 4:20 PM • nonstop
Southwest Airlines
FAQs on Washington to St Louis Flights
What are the airports in Washington?
IAD,BWI,DCA
What’s the most popular airline flying from DCA to STL?
The most popular airline flying from Washington to St Louis are
Can I fly from DCA to STL non-stop?
Yes, you can fly DCA to STL non-stop on
Which airlines fly nonstop between Washington and St Louis?
The non-stop flights between Washington and St Louis are .
What’s the earliest departure time from DCA to STL Airport?
The earliest flight leaves DCA at 6:00 am and lands in STL - Lambert St Louis International
What are the airports in St Louis?
STL
Can I make changes to my Washington to St Louis flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from DCA to STL?
Read the fare rules of the Washington to St Louis air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Washington and St Louis?
operate flights between Washington and St Louis
How long does a flight from Washington to St Louis take?
It takes approximately 2 hour to fly non-stop from DCA to STL, which is 719.05 miles by air.
Which airlines provide the cheapest flights from Washington (DCA) to St Louis (STL) ?
In the past couple of days, the cheapest tickets to STL from DCA were found on WN : USD 203
Do I need a passport to fly between DCA and STL?
No
What’s the latest departure time from DCA to STL ?
The last flight leaves DCA at 2:00 pm
Washington (DCA) to St Louis (STL): Airport Information
| Origin Airport | Ronald Reagan Washington National , Washington, US |
| Destination Airport | Lambert St Louis International , St Louis, US |
| Distance | 719 miles |
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