Cheap flights from Washington, D.C. to Seattle

Flights starting at $86. Choose between Alaska Airlines, United Airlines, or Delta Air Lines to find the best price.

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Cheapest one-way trip

$109

Cheapest nonstop round-trip

$92

Cheapest round-trip

$216

Average round-trip

$223

Nonstop flights in January

$92 – $1592

Round trips

Washington, D.C. IADSeattle SEA

Multiple carriers

$216
Washington, D.C. IADSeattle SEA

Multiple carriers

$216

Updated:

2302 miles
Distance
Duration
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Travelers usually depart from Baltimore–Washington International, Washington Dulles International, Ronald Reagan Washington National, Washington, DC - Union Station, or Washington DC - Parking Convention Center DC when they travel from Washington, D.C. to Seattle. Book your trip to arrive at Seattle–Tacoma International, Seattle, WA - King Street Station, Seattle, WA - Greyhound Station, Seattle, WA - University of Washington, or Seattle, WA - Poly Clinic. The distance between Washington, D.C. and Seattle is 3705 km. The most popular airlines for this route are Alaska Airlines, United Airlines, Delta Air Lines, American Airlines, and Frontier Airlines. Washington, D.C. and Seattle have 401 direct flights per week.

Weekly direct flights

MondaysTuesdaysWednesdaysThursdaysFridaysSaturdaysSundays
Direct flights8688878
Fly direct with

United Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

Alaska Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

Delta Air Lines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

Check-in for a flight from Washington, D.C. to Seattle

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Alaska AirlinesASAASYesOpens 24 days before flight
Closes 1 hours before flight
United AirlinesUALUAYesNo
Delta Air LinesDALDLYesOpens 24 days before flight
Closes 1 hours before flight
American AirlinesAALAAYesNo
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight

United States COVID-19 travel restrictions

Your trip summary

Most travelers from Baltimore, BWI can enter Seattle, SEA.

Departure

Additional information
  • Masks are recommended in certain settings

Information is provided as guidance only and accurate at the time of publishing. Always check government websites and airline materials before booking and traveling.

Learn more about COVID-19 restrictions in United States in our dedicated Stories article.

Frequently asked questions

How long does it take to travel from Washington, D.C. to Seattle?
A one-way nonstop (direct) flight between Washington, D.C. and Seattle takes around 6.1 hours.
What is the flight distance between Washington, D.C. and Seattle?
The flight distance between Washington, D.C. and Seattle is 3705 km.
What airlines offer nonstop (direct) flights between Washington, D.C. and Seattle?
Several carriers operate flights between Washington, D.C. and Seattle. Airlines offering nonstop (direct) flights include Delta Air Lines, Alaska Airlines, United Airlines.
What are the most popular routes to and from Washington, D.C.?
Travelers frequently search for route combinations, such as Washington, D.C. and Denver, Las Vegas, Orlando, San Francisco, Los Angeles, Austin, Phoenix, Atlanta, Fort Lauderdale, London, Salt Lake City, Chicago, San Diego, New Orleans, Houston, San Salvador, Paris, Dallas, Barcelona, Tampa.
What are the most popular routes to and from Seattle?
Travelers frequently search for route combinations, such as Seattle and Denver, Atlanta, Houston, Las Vegas, Austin, Orlando, Los Angeles, Salt Lake City, Mexico City, Paris, London, Detroit, New York, Minneapolis, Phoenix, Dallas, Raleigh, Charlotte, Cleveland, Chicago.
Which airports are there in Washington, D.C.?
Washington, D.C. is mainly served by Baltimore–Washington International. But there are other airports nearby, including Washington Dulles International, Ronald Reagan Washington National.
What airports are near Washington, D.C.?
The main airport in Washington, D.C. is Baltimore–Washington International. It is also served by Philadelphia International, Richmond International, Norfolk International, Trenton–Mercer, Harrisburg International, Lehigh Valley International, Atlantic City International, Lancaster, Altoona–Blair County, Hagerstown Regional.
What airports are near Seattle?
The main airport in Seattle is Seattle–Tacoma International. It is also served by Portland International, Vancouver International, Bellingham International, Paine Field Everett, Abbotsford International, Yakima Air Terminal, Victoria Inner Harbour SPB, Pangborn Memorial, Vancouver Harbour Flight Centre, Friday Harbor Airport.
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Washington, D.C. and Seattle?
Yes, it's possible to combine different modes of transport between Washington, D.C. and Seattle thanks to our Virtual Interlining technology. Making use of not only flights but also trains and buses between Washington, D.C. and Seattle can give rise to new adventures. Read more about how Virtual Interlining works on Kiwi.com Stories.
What is Virtual Interlining and how do I use it?
Which airlines fly between Washington, D.C. and Seattle?
When's the best time to travel between Washington, D.C. and Seattle?
What flights operate between Washington, D.C. and Seattle?
How many airports are there near Washington, D.C.?
How many airports are there near Seattle?
What time do nonstop (direct) flights between Washington, D.C. and Seattle depart?
What time do nonstop (direct) flights between Washington, D.C. and Seattle arrive?
What time do flights between Washington, D.C. and Seattle depart?
What time do flights between Washington, D.C. and Seattle arrive?

Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.

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