Cheap Flights from Seattle-Tacoma International Airport to Washington D.C (IAD) Find and Compare the Best Airline Deals | Skyticket

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2025/6
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Total Fares（Round-Trip/Economy）: USD /Per Person

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

-Tacoma－Washington Dulles Airport
June Lowest Airfares
USD292

The airfare displayed above is for Delta Air Lines

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-Tacoma－Washington Dulles Airport
July Lowest Airfares
USD347

The airfare displayed above is for Delta Air Lines

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-Tacoma－Washington Dulles Airport
August Lowest Airfares
USD334

The airfare displayed above is for Delta Air Lines

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-Tacoma－Washington Dulles Airport
September Lowest Airfares
USD348

The airfare displayed above is for Delta Air Lines

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-Tacoma－Washington Dulles Airport
October Lowest Airfares -----

Seattle－Washington D.C
Estimated Flight Time
4 Hours 54 Minutes
Seattle－Washington D.C
Number of Operating Airlines
4

Operating Airlines for -Tacoma－Washington Dulles Airport Route
Non-StopDelta Air Lines

Non-StopAlaska Airlines

Non-StopUnited Airlines

American Airlines

Other Destinations from:Seattle

-Tacoma－Washington D.C(Ronald Reagan Washington National)
USD206〜
-Tacoma－Washington D.C(Baltimore-Washington)
USD208〜
-Tacoma－Chicago(O'Hare)
USD170〜
-Tacoma－Chicago(Midway)
USD718〜
-Tacoma－Dallas(/Fort Worth)
USD185〜
-Tacoma－Dallas(Love Field)
USD370〜
-Tacoma－San Diego(SAN)
USD128〜
-Tacoma－Atlanta(Hartsfield-Jackson)
USD250〜
* Fares vary in accordance to seat availability
Other Departures to: Washington D.C

Dallas/Fort Worth Airport－Washington D.C(Washington Dulles)
USD198〜
Logan Airport－Washington D.C(Washington Dulles)
USD230〜
O'Hare Airport－Washington D.C(Washington Dulles)
USD204〜
Dallas Love Field Airport－Washington D.C(Washington Dulles)
USD242〜
Chicago Midway Airport－Washington D.C(Washington Dulles)
USD221〜
* Fares vary in accordance to seat availability