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

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2025/2
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2025/2
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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
February Lowest Airfares -----
-Tacoma－Washington Dulles Airport
March Lowest Airfares
USD353

The airfare displayed above is for Delta Air Lines

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-Tacoma－Washington Dulles Airport
April Lowest Airfares -----
-Tacoma－Washington Dulles Airport
May Lowest Airfares -----
-Tacoma－Washington Dulles Airport
June Lowest Airfares
USD495

The airfare displayed above is for Alaska Airlines

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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)
USD1,551〜
-Tacoma－Chicago(O'Hare)
USD217〜
-Tacoma－Chicago(Midway)
USD414〜
-Tacoma－Dallas(/Fort Worth)
USD282〜
-Tacoma－San Diego(SAN)
USD255〜
* Fares vary in accordance to seat availability
Other Departures to: Washington D.C

O'Hare Airport－Washington D.C(Washington Dulles)
USD317〜
* Fares vary in accordance to seat availability