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Cheap flights from Seattle to Washington, D.C. from $51

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Washington, D.C. departing on 5/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Tue 4/23

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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.

Best Price Found

$51

Fastest flight time

4h 49m

Direct flights

Every day

Airports in Washington, D.C.

3 airports
The best one-way flight to Washington, D.C. from Seattle in the past 72 hours is $51. The best round-trip flight deal from Seattle to Washington, D.C. found on momondo in the last 72 hours is $119.
The fastest flight from Seattle to Washington, D.C. takes 4h 49m
Direct flights go from Seattle to Washington, D.C. every day.
There are 3 airports near Washington, D.C.: Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD)

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.?

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

What is the cheapest day to depart Seattle for Washington, D.C.?

Thursday. The cheapest day of the week is typically Thursday. The most expensive is typically Monday

When is the cheapest time to fly from Seattle to Washington, D.C.?

In the afternoon. Seattle to Washington, D.C. flights are approximately 18% more expensive at noon than in the afternoon

What is the cheapest airline that flies to Washington, D.C. from Seattle?

Frontier. American Airlines, Delta, and Frontier are the most popular carriers operating from Seattle to Washington, D.C.

What is the cheapest Seattle to Washington, D.C. flight route?

Seattle/Tacoma Intl - Washington, D.C. Reagan-National. Fly from Seattle/Tacoma Intl to Washington, D.C. Reagan-National for the best Seattle - Washington, D.C. flight prices

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

42 days before. The cheapest time to buy a flight from Seattle to Washington, D.C. is approximately 42 days to departure

How many flights depart from Seattle to Washington, D.C. on average per day?

21 flights are operational weekly from Seattle to Washington, D.C. as of April 2024. The most popular departure time for this route is 7:00AM, with 67% of flights per day taking off at noon.

How many flights depart from Seattle to Washington, D.C. on average per week?

As of April 2024, 150 flights take off from Seattle and land in Washington, D.C. each week. The most common flight departure day for this route is Monday, with 15% of weekly flights taking off on this day.

What cabin class options are available on Seattle to Washington, D.C. flights?

There are 4 cabin classes available to choose from on Seattle to Washington, D.C. flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Washington, D.C. flights?

You could potentially save up to 53% on your flight if you consider stops on a Seattle to Washington, D.C. flight.

If you are looking to fly from Seattle to Washington, D.C., you are most likely going to fly from Seattle/Tacoma Intl Airport to Washington, D.C. Dulles Intl Airport, the most popular airports on that route. When traveling from Seattle, it is helpful to have an alternative airport to fly into when you land in Washington, D.C.. Good options for arrival airports in Washington, D.C., you can try Washington, D.C. Reagan-National Airport (in Washington, D.C.) or Baltimore/Washington Airport (in Baltimore). In April, $172 is typically the cheapest round trip price you’ll find from Seattle to Washington, D.C. which you can find when you fly SEA — BWI.

Seattle/Tacoma Intl Airport (SEA) to Washington, D.C. Dulles Intl Airport (IAD)$260
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Seattle/Tacoma Intl Airport (SEA) to Washington, D.C. Reagan-National Airport (DCA)$201
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Seattle/Tacoma Intl Airport (SEA) to Baltimore/Washington Airport (BWI)$172
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Easily compare round-trip flights from Seattle to Washington, D.C.

Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Seattle to Washington, D.C. by changing tabs
Frontier
Apr 30
SEA9:35 pmSeattle/Tacoma Intl
17h 26m
1 stop
DCA6:01 pmWashington, D.C. Reagan-National
May 7
DCA7:00 amWashington, D.C. Reagan-National
16h 35m
1 stop
SEA8:35 pmSeattle/Tacoma Intl
Multiple Airlines
May 10
SEA10:34 pmSeattle/Tacoma Intl
10h 26m
1 stop
BWI12:00 pmBaltimore/Washington
May 15
BWI6:30 amBaltimore/Washington
17h 30m
2 stops
SEA9:00 pmSeattle/Tacoma Intl
Frontier
May 1
SEA5:58 pmSeattle/Tacoma Intl
15h 02m
1 stop
DCA12:00 pmWashington, D.C. Reagan-National
May 6
DCA7:00 amWashington, D.C. Reagan-National
9h 45m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
Delta
May 1
SEA12:35 amSeattle/Tacoma Intl
7h 22m
1 stop
BWI10:57 amBaltimore/Washington
May 6
BWI6:16 pmBaltimore/Washington
8h 38m
1 stop
SEA11:54 pmSeattle/Tacoma Intl
Spirit Airlines
May 9
SEA9:19 pmSeattle/Tacoma Intl
7h 59m
1 stop
BWI8:18 amBaltimore/Washington
May 14
BWI6:30 amBaltimore/Washington
29h 15m
3 stops
SEA8:45 amSeattle/Tacoma Intl
Alaska Airlines
May 1
SEA4:03 pmSeattle/Tacoma Intl
4h 56m
IAD11:59 pmWashington, D.C. Dulles Intl
May 3
IAD4:12 pmWashington, D.C. Dulles Intl
10h 08m
1 stop
SEA11:20 pmSeattle/Tacoma Intl

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

If you're looking for one-way flights from Seattle to Washington, D.C., view some of our deals below provided by Alaska Airlines, Delta and Frontier
Frontier
May 18
SEA10:08 pmSeattle/Tacoma Intl
10h 55m
1 stop
DCA12:03 pmWashington, D.C. Reagan-National
Frontier
May 6
SEA5:02 pmSeattle/Tacoma Intl
15h 58m
1 stop
DCA12:00 pmWashington, D.C. Reagan-National
Multiple Airlines
May 8
SEA9:55 amSeattle/Tacoma Intl
17h 57m
3 stops
BWI6:52 amBaltimore/Washington

Search last-minute flights to Washington, D.C. from Seattle

Find and compare round-trip flight prices for your last-minute flight from Seattle to Washington, D.C.
Frontier
Apr 21
SEA10:30 pmSeattle/Tacoma Intl
10h 30m
1 stop
DCA12:00 pmWashington, D.C. Reagan-National
Apr 30
DCA6:51 pmWashington, D.C. Reagan-National
25h 07m
1 stop
SEA4:58 pmSeattle/Tacoma Intl
Multiple Airlines
Apr 19
SEA10:34 pmSeattle/Tacoma Intl
10h 26m
1 stop
DCA12:00 pmWashington, D.C. Reagan-National
Apr 22
DCA12:50 pmWashington, D.C. Reagan-National
22h 55m
2 stops
SEA8:45 amSeattle/Tacoma Intl
Spirit Airlines
Apr 17
SEA9:19 pmSeattle/Tacoma Intl
12h 59m
1 stop
BWI1:18 pmBaltimore/Washington
Apr 24
BWI2:25 pmBaltimore/Washington
9h 04m
1 stop
SEA8:29 pmSeattle/Tacoma Intl
Sun Country Air
Apr 18
SEA5:45 pmSeattle/Tacoma Intl
16h 17m
1 stop
IAD1:02 pmWashington, D.C. Dulles Intl
Apr 24
IAD12:00 pmWashington, D.C. Dulles Intl
7h 55m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
Delta
Apr 16
SEA12:35 amSeattle/Tacoma Intl
7h 22m
1 stop
BWI10:57 amBaltimore/Washington
May 1
BWI6:00 amBaltimore/Washington
7h 45m
1 stop
SEA10:45 amSeattle/Tacoma Intl
American Airlines
Apr 21
SEA9:44 pmSeattle/Tacoma Intl
7h 51m
1 stop
BWI8:35 amBaltimore/Washington
Apr 25
BWI5:00 amBaltimore/Washington
10h 38m
1 stop
SEA12:38 pmSeattle/Tacoma Intl

Best airlines flying from Seattle to Washington, D.C.

Compare and see reviews for airlines that fly from Seattle to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $114Free CancellationRating
7.6
4,730 reviews
Search JetBlue flights
DeltaPriceFrom $128Free CancellationRating
8.0
11,206 reviews
Search Delta flights
Spirit AirlinesPriceFrom $134Free CancellationRating
6.4
8,803 reviews
Search Spirit Airlines flights
FrontierPriceFrom $138Free CancellationRating
6.3
4,202 reviews
Search Frontier flights
Alaska AirlinesPriceFrom $168Free CancellationRating
8.1
9,065 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $209Free CancellationRating
7.4
11,391 reviews
Search United Airlines flights
American AirlinesPriceFrom $225Free CancellationRating
7.3
15,011 reviews
Search American Airlines flights
Sun Country AirPriceFrom $286Free CancellationRating
7.1
679 reviews
Search Sun Country Air flights
  • Alaska Airlines Flights From Seattle to Washington, D.C.

    Alaska Airlines is one of the most popular airlines flying from Seattle to Washington, D.C., operating 28 flights/week on average for this route. A good Alaska Airlines flight deal for Seattle to Washington, D.C. starts from $168 round-trip, up to an average price of $493. Our users have rated Alaska Airlines at 8.1/10.

  • Delta Flights From Seattle to Washington, D.C.

    Delta (8.0/10 from 11,206 reviews) operates around 5 flights from Seattle to Washington, D.C. in any given week. The average Delta airfare for this route is around $473, with deals from around $128 rare but found on momondo. Referenced prices are for round-trip Seattle to Washington, D.C. flight searches in the last 72 hours.


Alaska Airlines flights from Seattle to Washington, D.C.

Our best Alaska Airlines deals on Seattle to Washington, D.C. flight tickets
Alaska Airlines
May 1
SEA4:03 pmSeattle/Tacoma Intl
4h 56m
IAD11:59 pmWashington, D.C. Dulles Intl
May 3
IAD4:12 pmWashington, D.C. Dulles Intl
10h 08m
1 stop
SEA11:20 pmSeattle/Tacoma Intl
Alaska Airlines
May 2
SEA4:03 pmSeattle/Tacoma Intl
4h 56m
IAD11:59 pmWashington, D.C. Dulles Intl
May 8
IAD7:00 amWashington, D.C. Dulles Intl
10h 38m
1 stop
SEA2:38 pmSeattle/Tacoma Intl
Alaska Airlines
May 1
SEA4:03 pmSeattle/Tacoma Intl
4h 56m
IAD11:59 pmWashington, D.C. Dulles Intl
May 6
IAD4:40 pmWashington, D.C. Dulles Intl
5h 51m
SEA7:31 pmSeattle/Tacoma Intl

United Airlines flights from Seattle to Washington, D.C.

Our best United Airlines deals on Seattle to Washington, D.C. flight tickets
United Airlines
May 7
SEA7:15 amSeattle/Tacoma Intl
10h 47m
1 stop
IAD9:02 pmWashington, D.C. Dulles Intl
May 9
IAD8:45 amWashington, D.C. Dulles Intl
5h 48m
SEA11:33 amSeattle/Tacoma Intl
United Airlines
May 3
SEA7:10 pmSeattle/Tacoma Intl
7h 11m
1 stop
IAD5:21 amWashington, D.C. Dulles Intl
May 5
IAD5:30 pmWashington, D.C. Dulles Intl
5h 48m
SEA8:18 pmSeattle/Tacoma Intl
United Airlines
May 11
SEA1:00 pmSeattle/Tacoma Intl
5h 01m
IAD9:01 pmWashington, D.C. Dulles Intl
May 14
IAD6:00 amWashington, D.C. Dulles Intl
9h 07m
1 stop
SEA12:07 pmSeattle/Tacoma Intl

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

    There are 2320.5 mi between Seattle/Tacoma Intl and Washington, D.C.. 4h 49m is a normal flight duration for this route.

  • 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 updated daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Washington, D.C.?

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. 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 travel and health documents you'll need for your trip to Washington, D.C. may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C.. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.


Alternative routes for Seattle to Washington, D.C.

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Spokane to Washington, D.C. Flights
Fastest flight time6h 02m
Cheapest price$318
Pasco to Washington, D.C. Flights
Fastest flight time8h 29m
Cheapest price$408
Pullman to Washington, D.C. Flights
Fastest flight time9h 14m
Cheapest price$722
Bellingham to Washington, D.C. Flights
Fastest flight time7h 51m
Cheapest price$392
Walla Walla to Washington, D.C. Flights
Fastest flight time6h 47m
Cheapest price$478
Yakima to Washington, D.C. Flights
Fastest flight time6h 55m
Cheapest price$518
Wenatchee to Washington, D.C. Flights
Fastest flight time7h 07m
Cheapest price$387

Similar Seattle to Washington, D.C. flights

Flexible with your destination? Broaden your search and find flights similar to your Seattle to Washington, D.C. route

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?

Flights from Seattle to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Seattle to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Washington, D.C. from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


An easier way to manage your Washington, D.C. trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your stay in the United States

Fly into one of these airports located in Washington, D.C.
Airports listed have a maximum distance of 22.4 mi from Washington, D.C.


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