IAD to SEA (Washington to Seattle) Flights

Last Minute Flights from IAD to SEA

Best airfare and ticket deals for IAD to SEA flights are based on recent deals found by Expedia.com customers within the past 7 days.

OriginDestinationTravel DatesFlights From*
IADSeattleMay 26 to May 30$373
*Prices include taxes and fees

Cheapest IAD to SEA Flights

Best airfare and ticket deals for IAD to SEA flights are based on recent deals found by Expedia.com customers within the past 7 days.

OriginDestinationTravel DatesFlights From*
IADSeattleSeptember 24 to September 24$246
IADSeattleSeptember 24 to September 24$264
IADSeattleSeptember 10 to September 10$272
IADEverettSeptember 10 to September 24$362
*Prices include taxes and fees
IAD to SEA Flight Details
Origin airport
Washington Dulles Intl.
Origin airport IATA code
IAD
Destination airport
Seattle - Tacoma Intl.
Destination airport IATA code
SEA
Distance
2299 mi

Frequently asked questions

Which airlines with flights from Washington, DC Airport (IAD-Washington Dulles Intl.) to Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) allow free cancellation due to COVID-19?
We make it quick and easy to find tickets with cancellation flexibility in response to COVID-19. After entering your dates and destination, simply click on “No change fee.” It’s under the “Flexible change policies” heading on the left. Like always, make sure you read through the airline’s terms and conditions thoroughly before reserving your seats from Washington, DC Airport (IAD-Washington Dulles Intl.) to Sea-Tac Airport.
What airlines fly direct from Washington, DC Airport (IAD-Washington Dulles Intl.) to Seattle, WA Airport (SEA-Seattle - Tacoma Intl.)?
Avoid tedious stopovers and go straight from Washington, DC Airport (IAD-Washington Dulles Intl.) to Sea-Tac Airport with Alaska Airlines (AS). This renowned carrier offers 52 nonstop flights on this route per month. You can also fly on one of the 30 nonstop monthly flights provided by United Airlines (UA). No changing planes? No hassles.
How many flights are there from IAD to SEA?