Cheap Flights from St. Louis to Washington D.C. from CAD 107️ 2024

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Flights from St. Louis to Washington D.C.

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Find St. Louis to Washington D.C. flights starting at CAD 107.

Book one-way or return flights from St. Louis to Washington D.C. from as little as CAD 107. 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 cheapest average weekly prices of the corresponding route on Trip.com.

Find 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.

American Airlines

From CAD 107

Delta Air Lines

From CAD 112

Frontier Airlines

From CAD 114

Spirit Airlines

From CAD 126

United Airlines

From CAD 155

Southwest Airlines

From CAD 163

Sun Country Airlines

From CAD 177

Alaska Airlines

From CAD 335

ANA airlines

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Alternative Routes for St. Louis to Washington D.C. Flights

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

Cheapest
STL
06:16
1h 59m
Direct
DCA
09:15
St. Louis Lambert International Airport - Ronald Reagan Washington National Airport
Sat, May 11American Airlines
CAD 107
STL
17:29
4h 23m
1 transfer
IAD
22:52
St. Louis Lambert International Airport - Dulles International Airport
Sat, May 11Delta Air Lines
CAD 115
STL
17:29
4h 23m
1 transfer
IAD
22:52
St. Louis Lambert International Airport - Dulles International Airport
Sat, May 11Delta Air Lines
CAD 115
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How do I find the cheapest flights?

When are 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 are flights from St. Louis (STL) to Washington D.C. (WAS) cost?
According to Trip.com's data, the lowest price is around CAD 474.
How long is the flight from St. Louis (STL) to Washington D.C. (WAS)?
It takes about 2 hours 24 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): American Airlines, Brussels Airlines, Copa Airlines, United Airlines, Southwest Airlines, Lufthansa, Scandinavian Airlines 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. (WAS)?
There are 2 airport(s) in Washington D.C. (WAS): Ronald Reagan Washington National 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

Check airline and travel agency websites for latest flight deals

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.

Use the Trip.com App

Save up to £10 per person when booking your flights on Trip.com

Flight Information for St. Louis to Washington D.C. Flights

Cheapest direct flight price	CAD 106
Cheapest return ticket price	CAD 195
Cheapest month	December
Peak season for travel	June
Flight distance	1,139.76km
Average flight time	2 hours 20 minutes
Popular airline	American Airlines