Search flights from Seattle (SEA) to Washington, D.C. (WAS)

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Cheapest flights to Washington, D.C.

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

Flying from Seattle to Washington, D.C.: things to know

The most popular route is from Sea-Tac Airport in Seattle to Washington Dulles International Airport in Washington, D.C.. On average this flight takes 5 hours 9 minutes one-way and costs $781 round-trip.

Most popular route
Sea-Tac Airport (SEA) to Washington Dulles International Airport (IAD)
Average flight time
5 hours 9 minutes
Average round-trip price
$781
Fly from Seattle to Washington, D.C.
9 airlines

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Airlines that fly from Seattle to Washington, D.C.

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

  • Alaska Airlines
  • United Airlines
  • American Airlines
  • Frontier Airlines
  • Hawaiian Airlines
  • Sun Country
  • Southwest Airlines
  • Air Tahiti Nui
  • Japan Airlines

Frequently asked questions

Fly to more destinations from Seattle

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Hotels in Washington, D.C.

Thinking about which towns and cities to visit during your trip? Try Washington, D.C., a popular choice with other visitors.

Flights to Washington Dulles International Airport

Jet into this airport to explore Washington, D.C. at your leisure.

Flights to Ronald Reagan Washington National Airport

Jet into this airport to explore Washington, D.C. at your leisure.

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Flights to Maryland

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Flights to Washington DC Metropolitan area

Getting to Washington DC Metropolitan area just got easier!
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