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

Departure Date

2025/5
Sun	Mon	Tue	Wed	Thu	Fri	Sat
				1Search	2Search	3Search
4Search	5Search	6Search	7Search	8Search	9Search	10Search
11360	12Search	13Search	14Search	15Search	16Search	17Search
18Search	19Search	20Search	21Search	22Search	23542	24421
25Search	26Search	27Search	28Search	29Search	30Search	31Search

Select Return Date　　 Change Departure Date

Return Date

2025/5
Sun	Mon	Tue	Wed	Thu	Fri	Sat
				1------	2------	3------
4------	5------	6------	7------	8------	9------	10------
11------	12------	13------	14------	15------	16------	17------
18------	19------	20------	21------	22------	23------	24------
25------	26------	27------	28------	29------	30------	31------

　　Select Departure Date

Currency:US Dollar Loading Searching Fares Updating Fares

Departure Date

―

Return Date

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

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

Washington Dulles－Seattle-Tacoma Airport
May Lowest Airfares
USD360

The airfare displayed above is for Delta Air Lines

Set calendar for this month
Washington Dulles－Seattle-Tacoma Airport
June Lowest Airfares
USD420

The airfare displayed above is for United Airlines

Set calendar for this month

Washington Dulles－Seattle-Tacoma Airport
July Lowest Airfares -----
Washington Dulles－Seattle-Tacoma Airport
August Lowest Airfares
USD319

The airfare displayed above is for Delta Air Lines

Set calendar for this month
Washington Dulles－Seattle-Tacoma Airport
September Lowest Airfares
USD345

The airfare displayed above is for Delta Air Lines

Set calendar for this month

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)
USD194〜
Washington Dulles－Chicago(O'Hare)
USD190〜
Washington Dulles－Dallas(/Fort Worth)
USD219〜
Washington Dulles－Dallas(Love Field)
USD230〜
* Fares vary in accordance to seat availability
Other Departures to: Seattle

Dallas/Fort Worth Airport－Seattle(-Tacoma)
USD181〜
San Diego Airport－Seattle(-Tacoma)
USD179〜
O'Hare Airport－Seattle(-Tacoma)
USD171〜
Hartsfield-Jackson Atlanta Airport－Seattle(-Tacoma)
USD260〜
Baltimore-Washington Airport－Seattle(-Tacoma)
USD209〜
Ronald Reagan Washington National Airport－Seattle(-Tacoma)
USD319〜
* Fares vary in accordance to seat availability