Cheap flights from St. Louis to Washington, D.C.

Flights starting at £68. Choose between American Airlines, Delta Air Lines, or United Airlines to find the best price.

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Tips to know when travelling to Washington, D.C.

Travelers usually depart from St. Louis Lambert International, or St. Louis Union Station when they travel from St. Louis to Washington, D.C.. Book your trip to arrive at Baltimore–Washington International, Washington Dulles International, Ronald Reagan Washington National, Washington, DC - Union Station, or Washington DC - Parking Convention Center DC. The distance between St. Louis and Washington, D.C. is 1155 km. The most popular airlines for this route are American Airlines, Delta Air Lines, United Airlines, Spirit Airlines, and Frontier Airlines. St. Louis and Washington, D.C. have 401 direct flights per week. When you arrive at Washington, D.C., consider visiting National Mall, Independence National Historical Park, PA, USA, and Lincoln Memorial.

Weekly direct flights

MondaysTuesdaysWednesdaysThursdaysFridaysSaturdaysSundays
Direct flights5555535
Fly direct with

American Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

United Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

Check-in for a flight from St. Louis to Washington, D.C.

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
American AirlinesAALAAYesNo
Delta Air LinesDALDLYesOpens 24 days before flight
Closes 1 hours before flight
United AirlinesUALUAYesNo
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
Learn more about COVID-19 restrictions in United States in our dedicated Stories article.

Frequently asked questions

How long does it take to travel from St. Louis to Washington, D.C.?
A one-way nonstop (direct) flight between St. Louis and Washington, D.C. takes around 2.1 hours.
What is the flight distance between St. Louis and Washington, D.C.?
The flight distance between St. Louis and Washington, D.C. is 1155 km.
What airlines offer nonstop (direct) flights between St. Louis and Washington, D.C.?
Several carriers operate flights between St. Louis and Washington, D.C.. Airlines offering nonstop (direct) flights include American Airlines, United Airlines.
What are the most popular routes to and from St. Louis?
Travelers frequently search for route combinations, such as St. Louis and London, Manchester, Las Vegas, Dublin, San Jose, Orlando, Tampa, Glasgow, San Francisco, Houston, Minneapolis, Detroit, Los Angeles, Raleigh, Seattle, Atlanta, Guayaquil, Edmonton, Vilnius, Adelaide.
What are the most popular routes to and from Washington, D.C.?
Travelers frequently search for route combinations, such as Washington, D.C. and London, Manchester, Toronto, San Salvador, Birmingham, Athens, San Juan, Orlando, Manila, Tallinn, San Francisco, Boston, Hyderabad, Los Angeles, Denver, Edinburgh, Bangkok, Taipei, Chicago, Dublin.
What airports are near St. Louis?
The main airport in St. Louis is St. Louis Lambert International. It is also served by St. Louis Lambert International, General Wayne A. Downing Peoria International, Central Illinois Regional, MidAmerica St. Louis, Evansville Regional, Williamson County Regional, Abraham Lincoln Capital, Columbia Regional, Quincy Regional, Decatur.
What airports are near Washington, D.C.?
The main airport in Washington, D.C. is Baltimore–Washington International. It is also served by Philadelphia International, Norfolk International, Trenton–Mercer, Richmond International, Atlantic City International, Harrisburg International, Lehigh Valley International, Altoona–Blair County, Lancaster, Hagerstown Regional.
What buses and trains depart from St. Louis?
A number of bus and train companies depart from St. Louis, including Greyhound, Burlington Trailways.
Is it possible to combine flights, buses, and trains in one itinerary when traveling between St. Louis and Washington, D.C.?
Yes, it's possible to combine different modes of transport between St. Louis and Washington, D.C. thanks to our Virtual Interlining technology. Making use of not only flights but also trains and buses between St. Louis and Washington, D.C. can give rise to new adventures. Read more about how Virtual Interlining works on Kiwi.com Stories.
What is Virtual Interlining and how do I use it?
Which airlines fly between St. Louis and Washington, D.C.?
When's the best time to travel between St. Louis and Washington, D.C.?
What flights operate between St. Louis and Washington, D.C.?
How many airports are there near St. Louis?
How many airports are there near Washington, D.C.?
Is it possible to reach St. Louis by bus or train?
What time do nonstop (direct) flights between St. Louis and Washington, D.C. depart?
What time do nonstop (direct) flights between St. Louis and Washington, D.C. arrive?
What time do flights between St. Louis and Washington, D.C. depart?
What time do flights between St. Louis and Washington, D.C. arrive?

Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.

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