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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
$302
American Airlines
• nonstop
•
Oct 23 – Oct 29
The cheapest round trip flight from Washington to St Louis (DCA-STL-DCA) is currently $302
Cheapest Direct Flight
$121
Southwest Airlines
• nonstop
• 5h 30m
Oct 23
The cheapest nonstop flight from Washington to St Louis (DCA-STL) is currently $121
Fastest Flight
3h 30m
The fastest nonstop flight from Washington to St Louis (DCA-STL) takes 3h 30m
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.
Oct 23 - Oct 29, Economy
Washington → St Louis
- • nonstop
Washington → St Louis
- • 1 stop
American Airlines
Oct 23 - Oct 29, Economy
Washington → St Louis
- • 1 stop
Washington → St Louis
- • 1 stop
American Airlines
Oct 23 - Oct 29, Economy
Washington → St Louis
8h 55m
8:05 PM - 12:40 AM • 1 stop
Washington → St Louis
5h 50m
10:50 AM - 3:40 PM • 1 stop
Southwest Airlines
Oct 23 - Oct 29, Economy
Washington → St Louis
8h 45m
7:15 PM - 11:40 PM • 1 stop
Washington → St Louis
5h 50m
10:50 AM - 3:40 PM • 1 stop
Southwest Airlines
Oct 23 - Oct 29, Economy
Washington → St Louis
18h 28m
10:40 PM - 8:48 AM • 1 stop
Washington → St Louis
3h 29m
1:00 PM - 4:09 PM • nonstop
United 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.
Oct 23 - Oct 29, Economy
Washington → St Louis
5h 30m
3:25 PM - 4:55 PM • nonstop
Washington → St Louis
55m
8:10 AM - 11:05 AM • nonstop
Southwest Airlines
Oct 23 - Oct 29, Economy
Washington → St Louis
3h 40m
10:00 PM - 11:20 PM • nonstop
Washington → St Louis
2h 35m
8:10 AM - 11:05 AM • nonstop
Southwest Airlines
Oct 23 - Oct 29, Economy
Washington → St Louis
3h 56m
11:10 AM - 12:46 PM • nonstop
Washington → St Louis
3h 30m
5:08 PM - 8:18 PM • nonstop
American Airlines
Oct 23 - Oct 29, Economy
Washington → St Louis
- • nonstop
Washington → St Louis
- • nonstop
American Airlines
Oct 23 - Oct 29, Economy
Washington → St Louis
3h 30m
6:35 AM - 7:45 AM • nonstop
Washington → St Louis
2h 35m
8:10 AM - 11:05 AM • 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 6:35 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 708
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 7:1800 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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