Cheap Flights from Washington, DC to St. Louis

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Cheap IAD to St. Louis flights

Book your IAD to STL flights with Expedia and find last-minute Washington, DC to St. Louis airfare. Expedia offers discount airfare on multiple airline carriers that fly direct and indirect routes between IAD and STL, with new flight deals and promotions almost daily. When you book your next trip from Washington Dulles Intl. to Lambert St. Louis Intl. with Expedia, you can rest assured you’re getting great ticket prices and excellent service from one of the world’s most trusted travel providers.

IAD to STL Flight Schedule

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Popular Flights from Washington, DC, District of Columbia

Browse popular flight destinations from Washington, DC (IAD), and plan your next exciting trip. Expedia has cheap flights from Washington, DC on multiple airline carriers, so book your next trip today!

Popular Flights from St. Louis, Missouri

Browse popular flight destinations from St. Louis (STL), and plan your next exciting trip. Expedia has cheap flights from St. Louis on multiple airline carriers, so book your next trip today!

IAD to STL Route Map


Washington, DC to St. Louis Flights, Stats and Airplanes

Route information for flights from Washington Dulles Intl. to Lambert St. Louis Intl..

Distance:
694.45 miles

Airline carriers and aircraft used on flights from IAD to STL

Airline Carrier Aircraft
United Airlines Canadair Regional Jet 700
United Airlines Embraer 170
United Airlines Embraer RJ145 Amazon
US Airways Canadair Regional Jet 700
US Airways Embraer 170
US Airways Embraer RJ145 Amazon

Interesting Facts About Flights from Washington, DC to St. Louis (IAD to STL)

  • The smallest aircraft servicing flights from IAD to STL for Chautauqua Airlines is the EMB-135 built by Embraer with 37 seats.
  • Chautauqua Airlines operated flights from IAD to STL using 3 types of aircraft in 2009.
  • American Connection, Gojet Airlines, Chautauqua Airlines, UNITED, American Airlines offer flights from Washington, DC to St. Louis, MO.
  • In 2009, there were 5 airline companies operating between Washington and St. Louis.
  • American Connection carried a total of 41,779 passengers from IAD to STL in 2009.
  • 108,025 seats were available on flights from IAD to STL in 2009. Of those seats, a total of 77,395 passengers flew on all flights from IAD to STL that year.
  • There were 77,395 passengers that flew from Washington to St. Louis in 2009.
  • The largest aircraft servicing flights between Washington and St. Louis from UNITED is the B757-2 built by Boeing with 182 seats.
  • The oldest aircraft servicing trips from Washington, DC to St. Louis, MO in 2009 was American Airlines' MD-80 from Mcdonnell Douglas which started flying in 1990.
  • The newest aircraft servicing IAD to STL in 2009 was Chautauqua Airlines' EMB-140 from Embraer. The EMB-140 started flying in 2001.
  • The average aircraft occupancy on flights from Washington to St. Louis in 2009 was 69.86%.

(Source: FAA & BTS 2009 Databases)

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