BRL 415 Cheap Flights from St. Louis to Washington D.C. (STL-WAS)

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Cheap Flights from St. Louis to Washington D.C. starting at BRL 415

Book one-way or return flights from St. Louis to Washington D.C. from as little as BRL 415. Choose from the popular airlines below and book your flight today!

One way
Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Searching for the best last minute flight from St. Louis to Washington D.C.? Find one-way or return flights that are affordable and fit your itinerary.

Trip.com monitors the ticket fares of flights from St. Louis to Washington D.C.. Stay updated on price trends and snag the best deals for your upcoming trip.

Displayed prices are calculated based on the lowest average weekly prices of the corresponding route on Trip.com.

Cheapest Airlines flying from St. Louis to Washington D.C.

View airlines operating flights from St. Louis to Washington D.C.. Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines

From BRL 415

American Airlines

From BRL 420

Delta Air Lines

From BRL 510

United Airlines

From BRL 592

Sun Country Airlines

From BRL 636

Southwest Airlines

From BRL 776

Alaska Airlines

From BRL 1,509

Spirit Airlines

From BRL 1,855

ANA airlines

Find more flights and airlines

Alternative Routes from St. Louis to Washington D.C.

Discover different routes, airlines, and transfers and find the best alternative flights for your journey from St. Louis to Washington D.C..

Cheapest
STL
23:06
11h 57m
1 transfer
DCA
12:03
St. Louis Lambert International Airport - Ronald Reagan Washington National Airport
Thu, May 30Frontier Airlines
BRL 415
STL
18:10
3h 48m
1 transfer
IAD
22:58
St. Louis Lambert International Airport - Dulles International Airport
Tue, Jun 18Delta Air Lines
BRL 510
STL
18:10
3h 48m
1 transfer
IAD
22:58
St. Louis Lambert International Airport - Dulles International Airport
Tue, Jun 18Delta Air Lines
BRL 510
Find More Flights

Frequently Asked Questions

When to buy flight tickets from St. Louis (STL) to Washington D.C. (WAS) the cheapest?
Airlines adjust prices for flights from St. Louis to Washington D.C. based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much is a flight from St. Louis (STL) to Washington D.C. (WAS) cost?
According to Trip.com's data, the lowest price is around BRL 1,762.
How long is a flight from St. Louis (STL) to Washington D.C. (WAS)?
It takes about 2 hours 19 minutes to fly from St. Louis (STL) to Washington D.C. (WAS).
What are the most popular airlines that fly from St. Louis (STL) to Washington D.C. (WAS)?
Airlines with flights from St. Louis (STL) to Washington D.C. (WAS): Brussels Airlines, Copa Airlines, United Airlines, American Airlines, Southwest Airlines, Lufthansa and Avianca.
What's the most popular airline for direct flights from St. Louis (STL) to Washington D.C. (WAS)?
United Airlines operates 1 direct flights from St. Louis (STL) to Washington D.C. (WAS).
How many airports in Washington D.C.?
There are 3 airports near Washington D.C.: Ronald Reagan Washington National Airport, Baltimore/Washington Thurgood Marshall International Airport and Dulles International Airport.

How to find a cheap flight from St. Louis to Washington D.C.

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from St. Louis to Washington D.C.. Book your flights at the right time and save more.

Book Early

Once prices are gone, they're gone. Lock in deals while you can!

Compare Flight Prices

Compare prices on travel agency and airline websites.

Look Out for Deals

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Check One-way Fares

Buying two cheap one-way flights can sometimes be a better deal than a round-trip.

Try Different Dates

Flying during the week, early in the morning, or late at night can help save money.

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Flight Information from St. Louis to Washington D.C.

Cheapest direct flight price	BRL 414
Cheapest return ticket price	BRL 897
Cheapest month	April
Peak season for travel	November
Flight distance	1,139.76km
Average flight time	2 hours 19 minutes
Popular airline	American Airlines