Cheap Flights from Washington Dulles International Airport to Seattle (SEA) Find and Compare the Best Airline Deals | Skyticket

Departure Date

2025/8
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2025/8
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Total Fares（Round-Trip/Economy）: USD /Per Person

* Displayed fare(s) may differ from the actual search result

Washington Dulles－Seattle-Tacoma Airport
August Lowest Airfares
USD282

The airfare displayed above is for Delta Air Lines

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Washington Dulles－Seattle-Tacoma Airport
September Lowest Airfares
USD280

The airfare displayed above is for Delta Air Lines

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Washington Dulles－Seattle-Tacoma Airport
October Lowest Airfares
USD380

The airfare displayed above is for United Airlines

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Washington Dulles－Seattle-Tacoma Airport
November Lowest Airfares
USD257

The airfare displayed above is for Delta Air Lines

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Washington Dulles－Seattle-Tacoma Airport
December Lowest Airfares -----

Washington D.C－Seattle
Estimated Flight Time
5 Hours 34 Minutes
Washington D.C－Seattle
Number of Operating Airlines
5

Operating Airlines for Washington Dulles－Seattle-Tacoma Airport Route
Non-StopUnited Airlines

Delta Air Lines

Non-StopAlaska Airlines

American Airlines

SUN COUNTRY

Other Destinations from:Washington D.C

Washington Dulles－Boston(Logan)
USD217〜
Washington Dulles－Chicago(O'Hare)
USD211〜
Washington Dulles－Chicago(Midway)
USD219〜
Washington Dulles－Dallas(/Fort Worth)
USD216〜
Washington Dulles－Dallas(Love Field)
USD235〜
* Fares vary in accordance to seat availability
Other Departures to: Seattle

Dallas/Fort Worth Airport－Seattle(-Tacoma)
USD199〜
San Diego Airport－Seattle(-Tacoma)
USD169〜
O'Hare Airport－Seattle(-Tacoma)
USD169〜
Hartsfield-Jackson Atlanta Airport－Seattle(-Tacoma)
USD257〜
Baltimore-Washington Airport－Seattle(-Tacoma)
USD198〜
Ronald Reagan Washington National Airport－Seattle(-Tacoma)
USD248〜
* Fares vary in accordance to seat availability