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Cheap flights from Seattle to Washington, D.C. from $72

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 6/4. 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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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
Jun 5
SEA8:59 pmSeattle/Tacoma Intl
14h 30m
1 stop
BWI2:29 pmBaltimore/Washington
Jun 12
BWI10:14 pmBaltimore/Washington
13h 18m
1 stop
SEA8:32 amSeattle/Tacoma Intl
Multiple Airlines
Jun 3
SEA9:40 pmSeattle/Tacoma Intl
7h 38m
1 stop
BWI8:18 amBaltimore/Washington
Jun 5
BWI7:09 pmBaltimore/Washington
29h 56m
2 stops
SEA10:05 pmSeattle/Tacoma Intl
Frontier
Aug 23
SEA10:08 pmSeattle/Tacoma Intl
11h 01m
1 stop
DCA12:09 pmWashington, D.C. Reagan-National
Aug 24
DCA6:59 pmWashington, D.C. Reagan-National
16h 38m
1 stop
SEA8:37 amSeattle/Tacoma Intl
Delta
Aug 28
SEA12:30 amSeattle/Tacoma Intl
7h 17m
1 stop
BWI10:47 amBaltimore/Washington
Sep 1
BWI9:00 amBaltimore/Washington
8h 37m
1 stop
SEA2:37 pmSeattle/Tacoma Intl
Sun Country Air
May 27
SEA11:59 pmSeattle/Tacoma Intl
10h 03m
1 stop
IAD1:02 pmWashington, D.C. Dulles Intl
May 31
IAD6:20 pmWashington, D.C. Dulles Intl
16h 40m
1 stop
SEA8:00 amSeattle/Tacoma Intl
United Airlines
May 29
SEA10:53 amSeattle/Tacoma Intl
7h 03m
1 stop
IAD8:56 pmWashington, D.C. Dulles Intl
Jun 4
IAD12:35 pmWashington, D.C. Dulles Intl
5h 47m
SEA3:22 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
Spirit Airlines
Jun 4
SEA9:35 amSeattle/Tacoma Intl
20h 19m
1 stop
BWI8:54 amBaltimore/Washington
Frontier
Aug 31
SEA10:08 pmSeattle/Tacoma Intl
11h 01m
1 stop
DCA12:09 pmWashington, D.C. Reagan-National
Delta
May 29
SEA12:40 amSeattle/Tacoma Intl
7h 19m
1 stop
BWI10:59 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
May 16
SEA9:49 pmSeattle/Tacoma Intl
21h 10m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
May 21
DCA12:55 pmWashington, D.C. Reagan-National
21h 09m
1 stop
SEA7:04 amSeattle/Tacoma Intl
Multiple Airlines
May 13
SEA9:40 pmSeattle/Tacoma Intl
12h 53m
1 stop
BWI1:33 pmBaltimore/Washington
May 15
BWI12:29 pmBaltimore/Washington
23h 01m
1 stop
SEA8:30 amSeattle/Tacoma Intl
Spirit Airlines
May 15
SEA9:40 pmSeattle/Tacoma Intl
12h 48m
1 stop
BWI1:28 pmBaltimore/Washington
Jun 3
BWI9:20 pmBaltimore/Washington
14h 25m
1 stop
SEA8:45 amSeattle/Tacoma Intl
Sun Country Air
May 15
SEA5:45 pmSeattle/Tacoma Intl
14h 02m
1 stop
IAD10:47 amWashington, D.C. Dulles Intl
Jun 3
IAD5:25 pmWashington, D.C. Dulles Intl
20h 15m
1 stop
SEA10:40 amSeattle/Tacoma Intl
United Airlines
May 13
SEA6:38 amSeattle/Tacoma Intl
11h 51m
2 stops
BWI9:29 pmBaltimore/Washington
May 15
BWI3:00 pmBaltimore/Washington
10h 53m
1 stop
SEA10:53 pmSeattle/Tacoma Intl
Delta
May 13
SEA12:40 amSeattle/Tacoma Intl
7h 19m
1 stop
BWI10:59 amBaltimore/Washington
May 18
BWI4:43 pmBaltimore/Washington
10h 32m
1 stop
SEA12:15 amSeattle/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
4,525 reviews
Search JetBlue flights
DeltaPriceFrom $128Free CancellationRating
8.0
10,789 reviews
Search Delta flights
Spirit AirlinesPriceFrom $134Free CancellationRating
6.4
8,706 reviews
Search Spirit Airlines flights
FrontierPriceFrom $138Free CancellationRating
6.2
4,088 reviews
Search Frontier flights
Alaska AirlinesPriceFrom $159Free CancellationRating
8.0
9,141 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $209Free CancellationRating
7.4
11,043 reviews
Search United Airlines flights
American AirlinesPriceFrom $225Free CancellationRating
7.3
14,677 reviews
Search American Airlines flights
Sun Country AirPriceFrom $286Free CancellationRating
7.2
640 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 $459. Our users have rated Delta at 8.0/10.

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

    Alaska Airlines (8.0/10 from 9,141 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 $487, 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.


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 29
SEA11:28 pmSeattle/Tacoma Intl
5h 12m
IAD7:40 amWashington, D.C. Dulles Intl
Jun 2
IAD7:00 amWashington, D.C. Dulles Intl
5h 30m
SEA9:30 amSeattle/Tacoma Intl
Alaska Airlines
May 30
SEA4:00 pmSeattle/Tacoma Intl
4h 59m
IAD11:59 pmWashington, D.C. Dulles Intl
Jun 2
IAD7:00 amWashington, D.C. Dulles Intl
5h 30m
SEA9:30 amSeattle/Tacoma Intl
Alaska Airlines
May 30
SEA6:00 amSeattle/Tacoma Intl
8h 54m
1 stop
IAD5:54 pmWashington, D.C. Dulles Intl
Jun 5
IAD7:00 amWashington, D.C. Dulles Intl
5h 30m
SEA9:30 amSeattle/Tacoma Intl

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

Our best American Airlines deals on Seattle to Washington, D.C. flight tickets
American Airlines
Sep 28
SEA10:32 pmSeattle/Tacoma Intl
7h 04m
1 stop
IAD8:36 amWashington, D.C. Dulles Intl
Oct 8
IAD2:05 pmWashington, D.C. Dulles Intl
11h 40m
2 stops
SEA10:45 pmSeattle/Tacoma Intl
American Airlines
Aug 28
SEA9:46 pmSeattle/Tacoma Intl
7h 58m
1 stop
IAD8:44 amWashington, D.C. Dulles Intl
Sep 1
IAD6:52 amWashington, D.C. Dulles Intl
11h 04m
1 stop
SEA2:56 pmSeattle/Tacoma Intl
American Airlines
May 31
SEA11:43 pmSeattle/Tacoma Intl
8h 09m
1 stop
IAD10:52 amWashington, D.C. Dulles Intl
Jun 4
IAD6:50 amWashington, D.C. Dulles Intl
10h 46m
1 stop
SEA2:36 pmSeattle/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 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 - Baltimore/Washington. Fly from Seattle/Tacoma Intl to Baltimore/Washington for the best Seattle - Washington, D.C. flight prices

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

49 days before. The cheapest time to buy a flight from Seattle to Washington, D.C. is approximately 49 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 May 2024. The most popular departure time for this route is 7:00AM, with 46% of flights per day taking off at noon.

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

As of May 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 49% on your flight if you consider stops on a Seattle to Washington, D.C. flight.

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

$72

Fastest flight time

4h 52m

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 $72. The best round-trip flight deal from Seattle to Washington, D.C. found on momondo in the last 72 hours is $140.
The fastest flight from Seattle to Washington, D.C. takes 4h 52m
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 52m 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.


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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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.