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Cheap flights from Seattle to Washington, D.C. from $60

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 9/18. 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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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
Sep 24
SEA8:19 pmSeattle/Tacoma Intl
12h 50m
1 stop
DCA12:09 pmWashington, D.C. Reagan-National
Oct 1
DCA12:59 pmWashington, D.C. Reagan-National
9h 20m
1 stop
SEA7:19 pmSeattle/Tacoma Intl
Spirit Airlines
Sep 11
SEA4:05 pmSeattle/Tacoma Intl
12h 04m
1 stop
BWI7:09 amBaltimore/Washington
Sep 18
BWI9:31 amBaltimore/Washington
17h 39m
1 stop
SEA12:10 amSeattle/Tacoma Intl
Multiple Airlines
Sep 7
SEA9:46 pmSeattle/Tacoma Intl
12h 55m
1 stop
BWI1:41 pmBaltimore/Washington
Sep 17
BWI9:31 amBaltimore/Washington
17h 39m
1 stop
SEA12:10 amSeattle/Tacoma Intl
American Airlines
Sep 6
SEA5:00 amSeattle/Tacoma Intl
10h 41m
2 stops
DCA6:41 pmWashington, D.C. Reagan-National
Sep 13
DCA12:59 pmWashington, D.C. Reagan-National
13h 22m
2 stops
SEA11:21 pmSeattle/Tacoma Intl
Alaska Airlines
Sep 6
SEA7:07 amSeattle/Tacoma Intl
5h 09m
IAD3:16 pmWashington, D.C. Dulles Intl
Sep 13
IAD5:38 pmWashington, D.C. Dulles Intl
18h 16m
1 stop
SEA8:54 amSeattle/Tacoma Intl
Delta
Sep 6
SEA9:59 pmSeattle/Tacoma Intl
4h 57m
IAD5:56 amWashington, D.C. Dulles Intl
Sep 10
IAD7:25 amWashington, D.C. Dulles Intl
5h 54m
SEA10:19 amSeattle/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
Sep 18
SEA12:44 pmSeattle/Tacoma Intl
15h 25m
1 stop
BWI7:09 amBaltimore/Washington
Frontier
Sep 14
SEA9:01 amSeattle/Tacoma Intl
9h 58m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
Spirit Airlines
Sep 25
SEA12:44 pmSeattle/Tacoma Intl
15h 25m
1 stop
BWI7:09 amBaltimore/Washington

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

Alaska Airlines
Sep 6
SEA4:06 pmSeattle/Tacoma Intl
4h 53m
IAD11:59 pmWashington, D.C. Dulles Intl
Sep 13
IAD7:09 pmWashington, D.C. Dulles Intl
5h 51m
SEA10:00 pmSeattle/Tacoma Intl
United Airlines
Nov 13
SEA8:05 amSeattle/Tacoma Intl
4h 58m
IAD4:03 pmWashington, D.C. Dulles Intl
Nov 14
IAD8:35 amWashington, D.C. Dulles Intl
6h 00m
SEA11:35 amSeattle/Tacoma Intl
Delta
Sep 16
SEA9:55 pmSeattle/Tacoma Intl
5h 06m
IAD6:01 amWashington, D.C. Dulles Intl
Sep 23
IAD7:25 amWashington, D.C. Dulles Intl
5h 54m
SEA10:19 amSeattle/Tacoma Intl
Alaska Airlines
Sep 6
SEA10:00 amSeattle/Tacoma Intl
5h 09m
IAD6:09 pmWashington, D.C. Dulles Intl
Sep 13
IAD7:09 pmWashington, D.C. Dulles Intl
5h 51m
SEA10:00 pmSeattle/Tacoma Intl
United Airlines
Sep 14
SEA10:50 pmSeattle/Tacoma Intl
5h 05m
IAD6:55 amWashington, D.C. Dulles Intl
Sep 21
IAD5:26 pmWashington, D.C. Dulles Intl
5h 48m
SEA8:14 pmSeattle/Tacoma Intl
Delta
Nov 7
SEA9:55 pmSeattle/Tacoma Intl
4h 58m
IAD5:53 amWashington, D.C. Dulles Intl
Nov 10
IAD7:15 amWashington, D.C. Dulles Intl
6h 02m
SEA10:17 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.
Spirit Airlines
Aug 26
SEA4:18 pmSeattle/Tacoma Intl
11h 45m
1 stop
BWI7:03 amBaltimore/Washington
Sep 11
BWI8:15 amBaltimore/Washington
10h 00m
1 stop
SEA3:15 pmSeattle/Tacoma Intl
Multiple Airlines
Aug 28
SEA7:23 pmSeattle/Tacoma Intl
8h 40m
1 stop
BWI7:03 amBaltimore/Washington
Sep 5
BWI2:31 pmBaltimore/Washington
9h 15m
1 stop
SEA8:46 pmSeattle/Tacoma Intl
Frontier
Aug 30
SEA8:58 pmSeattle/Tacoma Intl
18h 11m
1 stop
DCA6:09 pmWashington, D.C. Reagan-National
Sep 9
DCA7:00 amWashington, D.C. Reagan-National
16h 16m
1 stop
SEA8:16 pmSeattle/Tacoma Intl
Spirit Airlines
Aug 26
SEA4:18 pmSeattle/Tacoma Intl
11h 45m
1 stop
BWI7:03 amBaltimore/Washington
Sep 11
BWI8:15 amBaltimore/Washington
10h 00m
1 stop
SEA3:15 pmSeattle/Tacoma Intl
Multiple Airlines
Aug 28
SEA7:23 pmSeattle/Tacoma Intl
8h 40m
1 stop
BWI7:03 amBaltimore/Washington
Sep 8
BWI11:25 amBaltimore/Washington
8h 33m
1 stop
SEA4:58 pmSeattle/Tacoma Intl
Frontier
Aug 30
SEA8:58 pmSeattle/Tacoma Intl
18h 11m
1 stop
DCA6:09 pmWashington, D.C. Reagan-National
Sep 7
DCA6:59 pmWashington, D.C. Reagan-National
16h 02m
1 stop
SEA8:01 amSeattle/Tacoma Intl

Delta flights from Seattle to Washington, D.C.

Our best Delta deals on Seattle to Washington, D.C. flight tickets
Delta
Sep 6
SEA9:59 pmSeattle/Tacoma Intl
4h 57m
IAD5:56 amWashington, D.C. Dulles Intl
Sep 10
IAD7:25 amWashington, D.C. Dulles Intl
5h 54m
SEA10:19 amSeattle/Tacoma Intl
Delta
Nov 13
SEA9:25 amSeattle/Tacoma Intl
5h 01m
IAD5:26 pmWashington, D.C. Dulles Intl
Nov 14
IAD7:50 amWashington, D.C. Dulles Intl
5h 54m
SEA10:44 amSeattle/Tacoma Intl
Delta
Sep 16
SEA9:55 pmSeattle/Tacoma Intl
5h 06m
IAD6:01 amWashington, D.C. Dulles Intl
Sep 24
IAD5:55 pmWashington, D.C. Dulles Intl
5h 45m
SEA8:40 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
Oct 11
SEA7:00 pmSeattle/Tacoma Intl
7h 24m
1 stop
IAD5:24 amWashington, D.C. Dulles Intl
Oct 15
IAD8:30 amWashington, D.C. Dulles Intl
5h 48m
SEA11:18 amSeattle/Tacoma Intl
United Airlines
Sep 6
SEA7:20 amSeattle/Tacoma Intl
9h 17m
1 stop
IAD7:37 pmWashington, D.C. Dulles Intl
Sep 8
IAD7:00 amWashington, D.C. Dulles Intl
9h 06m
1 stop
SEA1:06 pmSeattle/Tacoma Intl
United Airlines
Sep 14
SEA10:50 pmSeattle/Tacoma Intl
5h 05m
IAD6:55 amWashington, D.C. Dulles Intl
Sep 21
IAD5:26 pmWashington, D.C. Dulles Intl
5h 48m
SEA8:14 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 Sunday

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 - 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?

57 days before. The cheapest time to buy a flight from Seattle to Washington, D.C. is approximately 57 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 August 2024. The most popular departure time for this route is 8:00AM, with 38% of flights per day taking off at noon.

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

As of August 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 45% 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 August 2024, prices for Seattle to Washington, D.C. flights are approximately 9% 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

$60

Fastest flight time

4h 47m

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 $60. The best round-trip flight deal from Seattle to Washington, D.C. found on momondo in the last 72 hours is $128.
The fastest flight from Seattle to Washington, D.C. takes 4h 47m
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 47m 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
DeltaPriceFrom $134Free CancellationRating
8.0
9,414 reviews
Search Delta flights
FrontierPriceFrom $138Free CancellationRating
6.2
3,785 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $171Free CancellationRating
6.3
8,324 reviews
Search Spirit Airlines flights
Alaska AirlinesPriceFrom $182Free CancellationRating
8.0
9,380 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $226Free CancellationRating
7.3
10,000 reviews
Search American Airlines flights
JetBluePriceFrom $230Free CancellationRating
7.5
3,852 reviews
Search JetBlue flights
United AirlinesPriceFrom $243Free CancellationRating
7.4
9,847 reviews
Search United Airlines 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 $134 round-trip, up to an average price of $485. Our users have rated Delta at 8.0/10.

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

    Alaska Airlines (8.0/10 from 9,380 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 $504, with deals from around $182 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.


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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.