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

Flights starting at $60. Choose between Delta Air Lines, American Airlines, or United Airlines to find the best price.

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Round trips

St. Louis STLWashington, D.C. DCA

American Airlines

$229

Updated:

One-way trips

St. Louis STLWashington, D.C. IAD

United Airlines

$112

Updated:

718 miles
Distance
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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 Delta Air Lines, American Airlines, United Airlines, Frontier Airlines, and Spirit Airlines. St. Louis and Washington, D.C. have 401 direct flights per week. When you arrive at Washington, D.C., consider visiting Lincoln Memorial, Independence National Historical Park, PA, USA, and National Mall.

Weekly direct flights

MondaysTuesdaysWednesdaysThursdaysFridaysSaturdaysSundays
Direct flights5555545
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
Delta Air LinesDALDLYesOpens 24 days before flight
Closes 1 hours before flight
American AirlinesAALAAYesNo
United AirlinesUALUAYesNo
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight

United States COVID-19 travel restrictions

Your trip summary

Most travelers from St Louis, STL can enter Baltimore, BWI.

Departure

Additional information
  • Masks are recommended in certain settings

Information is provided as guidance only and accurate at the time of publishing. Always check government websites and airline materials before booking and traveling.

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 2.2 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 Las Vegas, Los Angeles, Denver, Orlando, Atlanta, Minneapolis, San Diego, San Francisco, London, Phoenix, Seattle, Houston, Sacramento, New York, Cancún, Fort Lauderdale, Oakland, Tampa, Paris, Dallas.
What are the most popular routes to and from Washington, D.C.?
Travelers frequently search for route combinations, such as Washington, D.C. and Denver, San Francisco, Orlando, Los Angeles, Las Vegas, Atlanta, Austin, Salt Lake City, Phoenix, London, Fort Lauderdale, Chicago, San Diego, Houston, Seattle, New Orleans, Boston, Paris, Dallas, Tampa.
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, Cape Girardeau Regional, Waynesville-St. Robert Regional, MidAmerica St. Louis, Barkley Regional, Evansville Regional, Williamson County Regional, Quincy Regional.
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, Richmond International, Norfolk International, Trenton–Mercer, Harrisburg International, Lehigh Valley International, Atlantic City International, Lancaster, Altoona–Blair County, Shenandoah Valley Regional.
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?
Virtual Interlining provides a revolutionary way of traveling. You can combine different modes of transport like flights, trains, and buses into one itinerary. And this often saves money. Thanks to the world's largest carrier database, the Kiwi.com search function enables anyone to mix and match different modes of transport easily.
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.?
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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