Cheap flights from Washington DC to Seattle

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Check our current prices for flights from Washington DC to Seattle. Please note that we also give you historical search data for this city connection. These are all airfares that people found in the past, in order to find more current flight information from Washington DC to Seattle, you will need to run a search below.

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From $251 / RT details

Book your flight now with Cheapoair.com and save!

Cheap Seattle airfares from $251/RT are provided by Cheapoair.com. Outbound flight is leaving on 04/12/2021, 04:45 pm from Washington Dulles (IAD) airport and arrives at Seattle/tacoma Sea/tac (SEA) at 07:45 pm. The flight time is 3 hours and 0 minutes. The Returning flight departes on 04/18/2021, 12:24 pm (other return dates are also available). Date posted: 05 Mar 2021

Price evolution for flights From Washington DC To Seattle

Price overview for flights from Washington DC to Seattle

Recent Deals on Flights from Washington DC to Seattle:Roundtrip / Oneway

  • $251Multiple Airlines flight Multiple Airlines 
    FromToDepartureTime
    Washington DC, DC (IAD)Seattle, WA (SEA)04/12/202104:45 pm
    Seattle, WA (SEA)Washington DC, DC (IAD)04/18/202112:24 pm
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  • $257Alaska Airlines flight Alaska Airlines 
    FromToDepartureTime
    Washington DC, DC (IAD)Seattle, WA (SEA)04/12/202104:45 pm
    Seattle, WA (SEA)Washington DC, DC (IAD)04/18/202108:15 am
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  • $295Multiple Airlines flight Multiple Airlines 
    FromToDepartureTime
    Washington DC, DC (DCA)Seattle, WA (SEA)03/14/202109:10 am
    Seattle, WA (SEA)Washington DC, DC (DCA)03/27/202107:16 pm
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  • $299Alaska Airlines flight Alaska Airlines 
    FromToDepartureTime
    Washington DC, DC (DCA)Seattle, WA (SEA)03/14/202109:10 am
    Seattle, WA (SEA)Washington DC, DC (DCA)03/27/202102:00 pm
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  • $90Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Washington DC, DC (DCA)Seattle, WA (SEA)04/09/202107:00 am
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  • $108Alaska Airlines flight Alaska Airlines 
    FromToDepartureTime
    Washington DC, DC (IAD)Seattle, WA (SEA)04/24/202104:45 pm
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  • $160Alaska Airlines flight Alaska Airlines 
    FromToDepartureTime
    Washington DC, DC (DCA)Seattle, WA (SEA)03/20/202109:00 am
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  • $217Alaska Airlines flight Alaska Airlines 
    FromToDepartureTime
    Washington DC, DC (IAD)Seattle, WA (SEA)04/09/202103:23 pm
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  • $232Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Washington DC, DC (DCA)Seattle, WA (SEA)03/20/202105:37 pm
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Specify your search details. Browse the cheapest flights from Washington DC to Seattle, Seattle hotel rooms and Washington DC to Seattle vacation packages from the most popular providers, airline consolidators and travel search engines.

Know what to do when flying to Seattle?

Seattle Travel Guide Named after the Native American Chief Sealth, Seattle has a magnificent setting for a city with Lake Washington behind, the snowy peak of Mount Rainier in the distance and the shore of Elliott Bay at its feet. As you fly or drive into the city, [...]
Seattle History Archaeological evidence suggests that the area of Seattle, WA has been inhabited for at least 4,000 years. The first known residents belonged to the Duwamish tribe. They were a group of Native Americans who were living on the site that is now [...]
Seattle Sightseeing Seattle is a wonderful tourist destination with picturesque sights. It is one of the largest cities of the United States of America. The wonderful location of the city between Lake Washington and Puget Sound gives it a wonderful setting and [...]
Seattle Nightlife Seattle, Washington, United States is the largest city in terms of population. Being a beautiful port city, Seattle, WA US is ideally situated in the western region between the lake Washington and the Puget Sound. A major educational, cultural [...]
Seattle Pictures
  • Seattle Doentown - Seattleview
  • Pioneer Square - Seattleview
  • Space Needle - Seattleview
  • Sunset - Seattleview

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