Search flights from Saint Louis (STL) to Washington, D.C. (WAS)

Book your plane tickets from Saint Louis to Washington, D.C. with ease

Cheapest flights to Washington, D.C.

The cheapest flights available in the next 60 days – prices are updated regularly

Flying from Saint Louis to Washington, D.C.: things to know

The most popular route is from Lambert - St. Louis International Airport in Saint Louis to Ronald Reagan Washington National Airport in Washington, D.C.. On average this flight takes 2 hours 14 minutes one-way and costs $489 round-trip.

Most popular route
Lambert - St. Louis International Airport (STL) to Ronald Reagan Washington National Airport (DCA)
Average flight time
2 hours 14 minutes
Average round-trip price
$489
Fly from Saint Louis to Washington, D.C.
5 airlines

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Airlines that fly from Saint Louis to Washington, D.C.

Airline options may vary according to recently booked flights and your search terms

  • American Airlines
  • United Airlines
  • Southwest Airlines
  • Frontier Airlines
  • Sun Country

Frequently asked questions

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