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Cheap flights from Seattle to Washington, D.C. from $57

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 9/11. 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 8/6

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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
Spirit Airlines
Aug 13
SEA8:54 pmSeattle/Tacoma Intl
22h 58m
3 stops
BWI10:52 pmBaltimore/Washington
Aug 21
BWI12:24 pmBaltimore/Washington
24h 45m
2 stops
SEA10:09 amSeattle/Tacoma Intl
Frontier
Sep 5
SEA9:01 amSeattle/Tacoma Intl
9h 58m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
Sep 11
DCA12:59 pmWashington, D.C. Reagan-National
22h 02m
1 stop
SEA8:01 amSeattle/Tacoma Intl
Alaska Airlines
Sep 5
SEA7:07 amSeattle/Tacoma Intl
5h 09m
IAD3:16 pmWashington, D.C. Dulles Intl
Sep 11
IAD4:16 pmWashington, D.C. Dulles Intl
10h 26m
1 stop
SEA11:42 pmSeattle/Tacoma Intl
Multiple Airlines
Sep 7
SEA9:46 pmSeattle/Tacoma Intl
12h 55m
1 stop
BWI1:41 pmBaltimore/Washington
Sep 14
BWI9:40 amBaltimore/Washington
17h 30m
1 stop
SEA12:10 amSeattle/Tacoma Intl
JetBlue
Sep 5
SEA11:47 pmSeattle/Tacoma Intl
11h 54m
2 stops
DCA2:41 pmWashington, D.C. Reagan-National
Sep 11
DCA11:30 amWashington, D.C. Reagan-National
14h 07m
2 stops
SEA10:37 pmSeattle/Tacoma Intl
American Airlines
Sep 5
SEA5:00 amSeattle/Tacoma Intl
10h 41m
2 stops
DCA6:41 pmWashington, D.C. Reagan-National
Sep 11
DCA1:46 pmWashington, D.C. Reagan-National
12h 14m
2 stops
SEA11:00 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
Sep 11
SEA9:46 pmSeattle/Tacoma Intl
11h 23m
1 stop
DCA12:09 pmWashington, D.C. Reagan-National
Spirit Airlines
Aug 26
SEA7:23 pmSeattle/Tacoma Intl
20h 06m
2 stops
BWI6:29 pmBaltimore/Washington
Frontier
Sep 4
SEA8:57 pmSeattle/Tacoma Intl
12h 12m
1 stop
DCA12:09 pmWashington, D.C. Reagan-National

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

Alaska Airlines
Sep 11
SEA7:07 amSeattle/Tacoma Intl
5h 09m
IAD3:16 pmWashington, D.C. Dulles Intl
Sep 11
IAD7:09 pmWashington, D.C. Dulles Intl
5h 51m
SEA10:00 pmSeattle/Tacoma Intl
Delta
Sep 26
SEA9:55 pmSeattle/Tacoma Intl
5h 06m
IAD6:01 amWashington, D.C. Dulles Intl
Oct 2
IAD5:55 pmWashington, D.C. Dulles Intl
5h 45m
SEA8:40 pmSeattle/Tacoma Intl
United Airlines
Sep 21
SEA10:50 pmSeattle/Tacoma Intl
5h 05m
IAD6:55 amWashington, D.C. Dulles Intl
Sep 29
IAD5:20 pmWashington, D.C. Dulles Intl
5h 48m
SEA8:08 pmSeattle/Tacoma Intl
Alaska Airlines
Sep 28
SEA10:00 amSeattle/Tacoma Intl
5h 09m
IAD6:09 pmWashington, D.C. Dulles Intl
Oct 15
IAD7:02 amWashington, D.C. Dulles Intl
5h 51m
SEA9:53 amSeattle/Tacoma Intl
Delta
Jan 17
SEA10:00 pmSeattle/Tacoma Intl
5h 00m
IAD6:00 amWashington, D.C. Dulles Intl
Jan 21
IAD5:15 pmWashington, D.C. Dulles Intl
6h 04m
SEA8:19 pmSeattle/Tacoma Intl
Delta
Sep 27
SEA9:55 pmSeattle/Tacoma Intl
5h 06m
IAD6:01 amWashington, D.C. Dulles Intl
Oct 1
IAD7:25 amWashington, D.C. Dulles Intl
5h 54m
SEA10:19 amSeattle/Tacoma Intl

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.
Multiple Airlines
Aug 7
SEA8:00 amSeattle/Tacoma Intl
26h 16m
1 stop
BWI1:16 pmBaltimore/Washington
Aug 13
BWI2:29 pmBaltimore/Washington
9h 45m
1 stop
SEA9:14 pmSeattle/Tacoma Intl
Spirit Airlines
Aug 7
SEA5:10 amSeattle/Tacoma Intl
29h 15m
1 stop
BWI1:25 pmBaltimore/Washington
Aug 13
BWI6:16 pmBaltimore/Washington
27h 01m
2 stops
SEA6:17 pmSeattle/Tacoma Intl
Frontier
Aug 3
SEA1:38 pmSeattle/Tacoma Intl
19h 31m
1 stop
DCA12:09 pmWashington, D.C. Reagan-National
Aug 13
DCA7:00 amWashington, D.C. Reagan-National
27h 04m
1 stop
SEA7:04 amSeattle/Tacoma Intl
Sun Country Air
Aug 7
SEA6:05 pmSeattle/Tacoma Intl
14h 12m
1 stop
IAD11:17 amWashington, D.C. Dulles Intl
Aug 14
IAD11:30 amWashington, D.C. Dulles Intl
23h 29m
1 stop
SEA7:59 amSeattle/Tacoma Intl
United Airlines
Aug 6
SEA11:20 pmSeattle/Tacoma Intl
4h 59m
IAD7:19 amWashington, D.C. Dulles Intl
Aug 13
IAD8:43 amWashington, D.C. Dulles Intl
5h 47m
SEA11:30 amSeattle/Tacoma Intl
Delta
Aug 8
SEA9:59 pmSeattle/Tacoma Intl
4h 57m
IAD5:56 amWashington, D.C. Dulles Intl
Aug 19
IAD7:25 amWashington, D.C. Dulles Intl
5h 46m
SEA10:11 amSeattle/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
Sep 24
SEA8:55 amSeattle/Tacoma Intl
9h 22m
1 stop
IAD9:17 pmWashington, D.C. Dulles Intl
Sep 25
IAD8:36 amWashington, D.C. Dulles Intl
8h 17m
1 stop
SEA1:53 pmSeattle/Tacoma Intl
United Airlines
Sep 21
SEA10:50 pmSeattle/Tacoma Intl
5h 05m
IAD6:55 amWashington, D.C. Dulles Intl
Sep 29
IAD5:20 pmWashington, D.C. Dulles Intl
5h 48m
SEA8:08 pmSeattle/Tacoma Intl
United Airlines
Sep 10
SEA6:45 amSeattle/Tacoma Intl
12h 58m
2 stops
DCA10:43 pmWashington, D.C. Reagan-National
Sep 16
DCA4:38 pmWashington, D.C. Reagan-National
9h 15m
1 stop
SEA10:53 pmSeattle/Tacoma Intl

Delta flights from Seattle to Washington, D.C.

Our best Delta deals on Seattle to Washington, D.C. flight tickets
Delta
Jan 17
SEA10:00 pmSeattle/Tacoma Intl
5h 00m
IAD6:00 amWashington, D.C. Dulles Intl
Jan 21
IAD5:15 pmWashington, D.C. Dulles Intl
6h 04m
SEA8:19 pmSeattle/Tacoma Intl
Delta
Sep 27
SEA9:55 pmSeattle/Tacoma Intl
5h 06m
IAD6:01 amWashington, D.C. Dulles Intl
Oct 15
IAD7:15 amWashington, D.C. Dulles Intl
6h 02m
SEA10:17 amSeattle/Tacoma Intl
Delta
Jan 19
SEA10:00 pmSeattle/Tacoma Intl
5h 00m
IAD6:00 amWashington, D.C. Dulles Intl
Mar 11
IAD7:30 amWashington, D.C. Dulles Intl
6h 07m
SEA10:37 amSeattle/Tacoma Intl

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

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

Frontier. Frontier, Spirit Airlines, and JetBlue 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 July 2024. The most popular departure time for this route is 8:00AM, with 37% of flights per day taking off at noon.

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

As of July 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 34% on your flight if you consider stops on a Seattle to Washington, D.C. flight.

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

As of July 2024, prices for Seattle to Washington, D.C. flights are approximately 15% cheaper when compared to flights at the same time last year.

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

$57

Fastest flight time

4h 48m

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 $57. The best round-trip flight deal from Seattle to Washington, D.C. found on momondo in the last 72 hours is $144.
The fastest flight from Seattle to Washington, D.C. takes 4h 48m
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 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 48m 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.


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
FrontierPriceFrom $105Free CancellationRating
6.2
3,835 reviews
Search Frontier flights
JetBluePriceFrom $114Free CancellationRating
7.6
3,996 reviews
Search JetBlue flights
DeltaPriceFrom $128Free CancellationRating
8.0
9,630 reviews
Search Delta flights
Spirit AirlinesPriceFrom $134Free CancellationRating
6.3
8,407 reviews
Search Spirit Airlines flights
Alaska AirlinesPriceFrom $159Free CancellationRating
8.0
9,365 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $218Free CancellationRating
7.4
10,000 reviews
Search United Airlines flights
American AirlinesPriceFrom $225Free CancellationRating
7.3
10,000 reviews
Search American Airlines flights
Sun Country AirPriceFrom $286Free CancellationRating
7.0
515 reviews
Search Sun Country Air flights
  • Delta Flights From Seattle to Washington, D.C.

    Delta is one of the most popular airlines flying from Seattle to Washington, D.C., operating 5 flights/week on average for this route. A good Delta flight deal for Seattle to Washington, D.C. starts from $128 round-trip, up to an average price of $457. Our users have rated Delta at 8.0/10.

  • Alaska Airlines Flights From Seattle to Washington, D.C.

    Alaska Airlines (8.0/10 from 9,365 reviews) operates around 28 flights from Seattle to Washington, D.C. in any given week. The average Alaska Airlines airfare for this route is around $484, with deals from around $159 rare but found on momondo. Referenced prices are for round-trip Seattle to Washington, D.C. flight searches in the last 72 hours.


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

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Tue 7/30
Tue 8/6
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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 22.4 mi from Washington, D.C.