Cheap Flight Tickets from St Louis (STL) to Washington (DCA), Starting at $273

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

$421

WN Southwest Airlines • nonstop • 3h 20m

Oct 02 – Oct 05

The cheapest round trip flight from St Louis to Washington (STL-DCA-STL) is currently $421

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Cheapest Direct Flight

$273

WN Southwest Airlines • nonstop • 3h 20m

Oct 14

The cheapest nonstop flight from St Louis to Washington (STL-DCA) is currently $273

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Fastest Flight

2h 35m

The fastest nonstop flight from St Louis to Washington (STL-DCA) takes 2h 35m

Top Airlines Flying from St Louis to Washington

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta Airlines

Alaska Airlines -AS

Alaska Airlines

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.

Oct 02 - Oct 05, Economy
WN
St Louis → Washington
3h 20m
7:50 PM - 10:50 PM • nonstop
WN
St Louis → Washington
3h 45m
12:00 PM - 1:25 PM • nonstop
$421
Southwest Airlines
Oct 02 - Oct 05, Economy
WN
St Louis → Washington
5h 55m
2:30 PM - 7:25 PM • 1 stop
WN
St Louis → Washington
3h 50m
3:25 PM - 4:55 PM • nonstop
$431
Southwest Airlines
Oct 02 - Oct 05, Economy
WN
St Louis → Washington
6h 50m
5:50 PM - 11:00 PM • 1 stop
WN
St Louis → Washington
3h 45m
12:00 PM - 1:25 PM • nonstop
$431
Southwest Airlines
Oct 02 - Oct 05, Economy
WN
St Louis → Washington
5h 50m
10:50 AM - 3:40 PM • 1 stop
WN
St Louis → Washington
3h 45m
12:00 PM - 1:25 PM • nonstop
$431
Southwest Airlines
Oct 02 - Oct 05, Economy
DL
St Louis → Washington
6h 43m
5:59 PM - 11:02 PM • 1 stop
DL
St Louis → Washington
7h 35m
9:00 AM - 12:55 PM • 1 stop
$555
Delta Airlines
Oct 02 - Oct 05, Economy
DL
St Louis → Washington
5h 42m
1:55 PM - 6:37 PM • 1 stop
DL
St Louis → Washington
8h 58m
12:32 PM - 5:10 PM • 1 stop
$555
Delta 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 8:05 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 DL : USD 555
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 7:55 pm

Essential Information for Booking Flights from St Louis (STL) - AI Insights

What's the cheapest airline from stl to dca?
You can find the cheapest airline from St. Louis (STL) to Washington D.C. (DCA) with Frontier Airlines (F9), which offers budget-friendly flights. For a one-way trip with one stop, book in advance to secure the best airfares.
What's the popular airline to fly from stl to dca?
You can fly from Lambert St Louis International Airport (stl) to Ronald Reagan Washington National Airport (dca) on Southwest Airlines (WN), which offers budget-friendly flights with one stop. It's recommended to book your ticket at least 46 days in advance to secure the best Low Fares. You can find the cheapest airfares on fareleaders.com, a leading airfare comparison platform.
What's the cheapest day of the week to fly from stl to dca?
The cheapest day to fly from Lambert St Louis International Airport (stl) to Ronald Reagan Washington National Airport (dca) is Wednesday. Flying on Wednesdays can result in budget-friendly flights. You can find airfares on the airline's website or through airfare comparison platforms like fareleaders.com.
What's the cheapest month to fly from stl to dca?
The cheapest month to fly from St. Louis to Washington D.C. is November, which is typically a low-cost month for air travel. This is due to the lower demand for flights during the winter holiday season. You can expect to find budget-friendly flights during this time. For the best deals, consider booking your flight 46 days in advance.
Which airline/airlines fly from stl to dca?
Frontier Airlines, American Airlines, Delta Airlines, and Southwest Airlines offer flights from Lambert St Louis International Airport (STL) to Ronald Reagan Washington National Airport (DCA).
What is the estimated airfare for a one-way flight from Lambert St Louis International Airport to Ronald Reagan Washington National Airport?
The estimated airfare for a one-way flight from Lambert St Louis International Airport to Ronald Reagan Washington National Airport is available on FareLeaders.com, with Frontier Airlines being the cheapest airline option.
How many advance booking days are required for a one-way trip from St Louis to Washington D.C.
For a one-way trip from St Louis to Washington D.C., advance booking days are required 46 days in advance.
Can I book a flight from Milwaukee to Washington D.C. directly through your website?
No, you cannot book a flight from Milwaukee to Washington D.C. directly through FareLeaders.com, but you can look for flights from Washington D.C. airport to Milwaukee airport.
What is the best time to book a flight to get the cheapest airfare for a weekend getaway?
The best time to book a flight for a weekend getaway is during the cheapest month, November, and on the cheapest day, Wednesday.
How can I find the cheapest airline tickets for my trip to Washington D.C.?
You can find the cheapest airline tickets for your trip to Washington D.C. by using FareLeaders.com, with Frontier Airlines being the cheapest airline option.
Can I look for flights from Washington D.C. airport to Milwaukee airport on your website?
Yes, you can look for flights from Washington D.C. airport to Milwaukee airport on FareLeaders.com.
How do I need to book my flight to ensure it is available on my preferred travel dates?
To ensure your flight is available on your preferred travel dates, book your flight in advance, with 46 days being the recommended advance booking days for a one-way trip.

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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