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Flights from Seattle / Tacoma International Airport to District of Columbia

Flight deals from Seattle / Tacoma International Airport to District of Columbia

Looking for cheap tickets from Seattle / Tacoma International Airport to District of Columbia, or a last-minute trip? Find the lowest prices on one-way and return tickets right here.
Washington D.C..£126 per passenger.Departing Thu, 6 Nov, returning Thu, 13 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Thu, 6 Nov, arriving in Washington Ronald Reagan.Inbound indirect flight with Frontier Airlines, departs from Washington Ronald Reagan on Thu, 13 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £126, select.
Washington D.C..£134 per passenger.Departing Sat, 18 Oct, returning Sat, 25 Oct.Return flight with Hawaiian Airlines.Outbound direct flight with Hawaiian Airlines departs from Seattle / Tacoma International on Sat, 18 Oct, arriving in Washington Dulles.Inbound direct flight with Hawaiian Airlines departs from Washington Dulles on Sat, 25 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £134, select.
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Flying from Seattle / Tacoma International Airport to District of Columbia

Arm yourself with these facts on the fly.
Cheapest flight found£126
Cheapest month to flyNovember
Average flight time5 hrs, 5 mins
Average flights per week247
Most popular airlineAir Tahiti Nui

Frequently asked questions

Yes - direct flights currently operate from Seattle / Tacoma International Airport to Washington Dulles Airport in District of Columbia.
We looked at all of the upcoming return flights from Seattle / Tacoma International Airport to District of Columbia we could find over the next 12 months. It looks like £126 is the best price. This is good, compared to the average District of Columbia ticket price of £130.
The cheapest month to fly from Seattle / Tacoma International Airport to Washington Ronald Reagan Airport is currently November.
The cheapest month to fly from Seattle / Tacoma International Airport to Washington Dulles Airport is usually October.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle / Tacoma International Airport to District of Columbia on Thursday, 6 November 2025.
If you're flying from Seattle / Tacoma International, the cheapest city in District of Columbia to fly into is Washington D.C.. The cheapest airport serving Washington D.C. at the moment is Washington Ronald Reagan.
The average flight time between Seattle / Tacoma International Airport and District of Columbia is 5 hours and 5 minutes.

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