Cheap Flight Tickets from St Louis (STL) to Washington (DCA), Starting at $144

Good to Know: Cheapest and Fastest STL - DCA Flights

Useful information for finding best airline tickets from Lambert St Louis International to Ronald Reagan Washington National on your next trip.

Cheapest Round Trip Flight

$475

WN Southwest Airlines • 1 stop • 6h 40m

Aug 05 – Aug 12

The cheapest round trip flight from St Louis to Washington (STL-DCA-STL) is currently $475

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Cheapest Direct Flight

$144

WN Southwest Airlines • nonstop • 5h

Aug 02

The cheapest nonstop flight from St Louis to Washington (STL-DCA) is currently $144

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Fastest Flight

3h 20m

The fastest nonstop flight from St Louis to Washington (STL-DCA) takes 3h 20m

Latest Flight Deals from St Louis (STL) to Washington (DCA)

Compare and book low fare round-trip air tickets from St Louis to Washington. Ideal for travelers with confirmed return itineraries.

Aug 05 - Aug 12, Economy
WN
St Louis → Washington
6h 40m
10:45 AM - 3:45 PM • 1 stop
WN
St Louis → Washington
3h 30m
6:50 PM - 8:00 PM • nonstop
$475
Southwest Airlines
Aug 05 - Aug 12, Economy
WN
St Louis → Washington
8h 55m
8:30 AM - 3:05 PM • 1 stop
WN
St Louis → Washington
3h 30m
8:00 AM - 9:10 AM • nonstop
$475
Southwest Airlines
Aug 05 - Aug 12, Economy
WN
St Louis → Washington
9h 5m
3:15 PM - 10:00 PM • 1 stop
WN
St Louis → Washington
3h 30m
8:00 AM - 9:10 AM • nonstop
$475
Southwest Airlines
Aug 05 - Aug 12, Economy
WN
St Louis → Washington
13h 30m
2:45 PM - 11:55 PM • 1 stop
WN
St Louis → Washington
3h 35m
2:40 PM - 3:55 PM • nonstop
$475
Southwest Airlines
Aug 05 - Aug 12, Economy
WN
St Louis → Washington
10h 45m
10:15 AM - 6:00 PM • 1 stop
WN
St Louis → Washington
3h 30m
6:50 PM - 8:00 PM • nonstop
$475
Southwest Airlines
Aug 05 - Aug 12, Economy
WN
St Louis → Washington
10h 30m
6:30 AM - 2:00 PM • 1 stop
WN
St Louis → Washington
3h 35m
2:40 PM - 3:55 PM • nonstop
$475
Southwest Airlines

Fly from St Louis to Washington with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from St Louis to Washington? Find the biggest savings on one-way and round-trip tickets right here.

FAQs on St Louis to Washington Flights

What are the airports in St Louis?
STL
What’s the most popular airline flying from STL to DCA?
The most popular airline flying from St Louis to Washington are
Can I fly from STL to DCA non-stop?
Yes, you can fly STL to DCA non-stop on
Which airlines fly nonstop between St Louis and Washington?
The non-stop flights between St Louis and Washington are .
What’s the earliest departure time from STL to DCA Airport?
The earliest flight leaves STL at 5:12 am and lands in DCA - Ronald Reagan Washington National
What are the airports in Washington?
IAD,BWI,DCA
Can I make changes to my St Louis to Washington 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 STL to DCA?
Read the fare rules of the St Louis to Washington 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 St Louis and Washington?
operate flights between St Louis and Washington
How long does a flight from St Louis to Washington take?
It takes approximately 2 hour to fly non-stop from STL to DCA, which is 719.05 miles by air.
Which airlines provide the cheapest flights from St Louis (STL) to Washington (DCA) ?
In the past couple of days, the cheapest tickets to DCA from STL were found on WN : USD 475
Do I need a passport to fly between STL and DCA?
No
What’s the latest departure time from STL to DCA ?
The last flight leaves STL at 7:10 pm

St Louis (STL) to Washington (DCA): Airport Information

Origin Airport Lambert St Louis International , St Louis, US
Destination Airport Ronald Reagan Washington National , Washington, US
Distance 719 miles

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