Cheap SEA to Washington, DC flights

Book your SEA to IAD flights with Expedia and find last-minute Seattle to Washington, DC airfare. Expedia offers discount airfare on multiple airline carriers that fly direct and indirect routes between SEA and IAD, with new flight deals and promotions almost daily. When you book your next trip from Seattle Tacoma Intl. to Washington Dulles 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.

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!

SEA to IAD Route Map

Seattle to Washington, DC Flights, Stats and Airplanes

Route information for flights from Seattle Tacoma Intl. to Washington Dulles Intl..

Distance:
2,299.97 miles

Airline carriers and aircraft used on flights from SEA to IAD

Airline Carrier

Continental Airlines
Continental Airlines
Continental Airlines
United Airlines
United Airlines
United Airlines
US Airways
US Airways
US Airways

Aircraft

Airbus A319
Airbus A320-100/200
Boeing 757-200 pax
Airbus A319
Airbus A320-100/200
Boeing 757-200 pax
Airbus A319
Airbus A320-100/200
Boeing 757-200 pax

SEA - Seattle Tacoma Intl. Airlines

Browse the most popular airlines servicing the Seattle (SEA) airport. Visit their flights pages to learn more about the most popular routes these carriers fly.

IAD - Washington Dulles Intl. Airlines

Browse the most popular airlines servicing the Washington, DC (IAD) airport. Visit their flights pages to learn more about the most popular routes these carriers fly.

Interesting Facts About Flights from Seattle to Washington, DC (SEA to IAD)

  • UNITED operates the shortest flights from Seattle to Washington.
  • UNITED operated flights from SEA to IAD using 5 types of aircraft in 2009.
  • The oldest aircraft servicing trips from Seattle, WA to Washington, DC in 2009 was American Airlines' B757-2 from Boeing which started flying in 1990.
  • 177,263 seats were available on flights from SEA to IAD in 2009. Of those seats, a total of 154,383 passengers flew on all flights from SEA to IAD that year.
  • The newest aircraft servicing SEA to IAD in 2009 was UNITED's A319 from Airbus Industrie. The A319 started flying in 1997.
  • The shortest flight between SEA and IAD takes about 256 minutes.
  • UNITED offers the shortest flight times from Seattle to Washington.
  • There were 154,383 passengers that flew from Seattle to Washington in 2009.
  • UNITED carried a total of 154,198 passengers from SEA to IAD in 2009.
  • UNITED, American Airlines offer flights from Seattle, WA to Washington, DC.
  • The smallest aircraft servicing flights from SEA to IAD for UNITED is the A319 built by Airbus Industrie with 120 seats.
  • The average aircraft occupancy on flights from Seattle to Washington in 2009 was 87.45%.
  • The shortest flight distance between Seattle and Washington is 2306 miles.
  • In 2009, there were 2 airline companies operating between Seattle and Washington.
  • The largest aircraft servicing flights between Seattle and Washington from UNITED is the B777-2 built by Boeing with 255 seats.
  • Flight #196, operated by UNITED, was the flight with the most delays in 2009, with 11 minutes average delay between flights from Seattle to Washington.
  • The average flight time from Seattle, WA to Washington, DC takes about 256 minutes.

(Source: FAA & BTS 2009 Databases)