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Cheap flights from Seattle to Washington, D.C.

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Find the cheapest flights from Seattle to Washington, D.C.

Cheap return flights

These are some of the best return flight deals from Seattle to Washington, D.C. that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Seattle to Washington, D.C..

Cheap last-minute flights

Planning a quick getaway from Seattle to Washington, D.C.? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Washington, D.C., so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from Seattle to Washington, D.C.

Find recent round-trip train or bus tickets from Seattle to Washington, D.C..

All round-trip flight deals to Washington, D.C.

The cheapest plane tickets to Washington, D.C. found on KAYAK recently.
SEA-IAD
5h 00mdirect
IAD-SEA
6h 10mdirect
SEA-IAD
4h 54mdirect
IAD-SEA
5h 56mdirect
Qatar Airways
Find Deal
SEA-DCA
5h 10mdirect
DCA-SEA
5h 55mdirect
Japan Airlines
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SEA-IAD
5h 06mdirect
IAD-SEA
6h 05mdirect
Austrian Airlines
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SEA-IAD
5h 00mdirect
IAD-SEA
6h 13mdirect
SEA-IAD
5h 00mdirect
IAD-SEA
6h 13mdirect
China Eastern
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SEA-IAD
5h 03mdirect
IAD-SEA
6h 00mdirect
Copa Airlines
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SEA-IAD
5h 06mdirect
IAD-SEA
5h 51mdirect
United Airlines
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SEA-IAD
4h 53mdirect
IAD-SEA
6h 05mdirect
Ethiopian Air
Find Deal
SEA-DCA
5h 15mdirect
DCA-SEA
6h 06mdirect
Alaska Airlines
Find Deal
SEA-IAD
5h 06mdirect
IAD-SEA
6h 00mdirect
Avianca
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SEA-IAD
5h 00mdirect
IAD-SEA
5h 45mdirect
Finnair
Find Deal
SEA-IAD
4h 58mdirect
IAD-SEA
6h 07mdirect
Iberia
Find Deal
SEA-DCA
5h 15mdirect
DCA-SEA
5h 55mdirect
Hawaiian Airlines
Find Deal
SEA-DCA
5h 10mdirect
DCA-SEA
6h 06mdirect
Korean Air
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SEA-DCA
5h 15mdirect
DCA-SEA
6h 05mdirect
Air Tahiti Nui
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SEA-IAD
5h 06mdirect
IAD-SEA
6h 05mdirect
Brussels Airlines
Find Deal
SEA-IAD
4h 53mdirect
IAD-SEA
6h 05mdirect
Lufthansa
Find Deal
SEA-IAD
4h 58mdirect
IAD-SEA
6h 07mdirect
Singapore Airlines
Find Deal
SEA-IAD
5h 00mdirect
SEA-IAD
4h 54mdirect
Qatar Airways
Find Deal
SEA-DCA
5h 10mdirect
Japan Airlines
Find Deal
SEA-IAD
5h 06mdirect
Austrian Airlines
Find Deal
SEA-IAD
5h 00mdirect
SEA-IAD
5h 00mdirect
China Eastern
Find Deal
SEA-IAD
5h 03mdirect
Copa Airlines
Find Deal
SEA-IAD
5h 06mdirect
United Airlines
Find Deal
SEA-IAD
4h 53mdirect
Ethiopian Air
Find Deal
SEA-DCA
5h 15mdirect
Alaska Airlines
Find Deal
SEA-IAD
5h 06mdirect
Avianca
Find Deal
SEA-IAD
5h 00mdirect
Finnair
Find Deal
SEA-IAD
4h 58mdirect
Iberia
Find Deal
SEA-DCA
5h 15mdirect
Hawaiian Airlines
Find Deal
SEA-DCA
5h 10mdirect
Korean Air
Find Deal
SEA-DCA
5h 15mdirect
Air Tahiti Nui
Find Deal
SEA-IAD
5h 06mdirect
Brussels Airlines
Find Deal
SEA-IAD
4h 53mdirect
Lufthansa
Find Deal
SEA-IAD
5h 00mdirect
Virgin Atlantic
Find Deal
SEA-IAD
4h 58mdirect
Singapore Airlines
Find Deal

How to get the cheapest flight ticket from Seattle to Washington, D.C.

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from Seattle to Washington, D.C.?

February. The cheapest time of year to fly to Washington, D.C. from Seattle is February. The most expensive is June.

How far in advance should you book Seattle to Washington, D.C. flights?

57 days before. The cheapest time to buy a flight from Seattle to Washington, D.C. is approximately 57 days to departure

How have Seattle to Washington, D.C. flight prices changed over time?

As of November 2024, prices for Seattle to Washington, D.C. flights are approximately 3% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to Washington, D.C.

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Washington, D.C. according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Seattle to Washington, D.C. (SEA to WAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Washington, D.C.

Direct flights

None
There are no direct flights from Seattle to Washington, D.C.. There are no popular flight routes from Seattle to Washington, D.C..

  • How far is Seattle/Tacoma Intl to Washington, D.C. by plane?

    There are 3734,4 km between Seattle/Tacoma Intl and Washington, D.C..

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Washington, D.C.?

    Prices for flights from Seattle/Tacoma Intl Airport to Washington, D.C. are refreshed on a daily basis.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Washington, D.C.?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Washington, D.C..

  • What documentation or ID do you need to fly to Washington, D.C.?

    The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Washington, D.C.?


Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Washington, D.C.?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from Seattle.

Can I find flights from Seattle to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Washington, D.C. from Seattle with this policy.

How can momondo help me find flights from Seattle to Washington, D.C.?

momondo helps you find the best flight between Seattle and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Seattle to Washington, D.C. right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Seattle to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 36.1 km from Washington, D.C.