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Cheap flights from Seattle to Washington, D.C. from £90

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SEA — WAS
7 Jun — 14 Jun1
1 adult
Fri 7/6
Fri 14/6

Cheap flight deals from Seattle to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 2 June 2024.

Popular in

June

Cheapest in

February

Round-trip from

£440

One-way from

£133
High demand for flights, 19% potential price rise
Best time to find cheap flights, 19% potential price drop
From Seattle/Tacoma Intl to Washington, D.C. (WAS)
One-way flight from Seattle/Tacoma Intl to Washington, D.C. (WAS)

How far in advance should I book a flight from Seattle to Washington, D.C.?

Find a great deal and save up to 78% by booking at least 58 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Seattle to Washington, D.C. within the next two weeks, with the cheapest ticket starting at £355.

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

The best pricing can be found in the month of February. Prices to Washington, D.C. from Seattle average £315. You can even find prices in February for less than £315, as users have found deals to Washington, D.C. from as low as £98. The month of June appears to be one of the more expensive times to travel to Washington, D.C. from Seattle. Flying in the targeted month can save you up to 24%.

What is the cheapest time of day to fly from SEA to WAS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Washington, D.C. as you normally would.

Cheap Sun Country Air flights from Seattle to Washington, D.C.

Explore cheap flight options specifically provided by Sun Country Air for the route between Seattle and Washington, D.C.. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 903,732 searches. Data last updated 2 June 2024.
Peruse some of the lowest-priced Sun Country Air flights we've found from Seattle to Washington, D.C.. Be sure to come back soon if the deals available don't appeal to you at this time.
Mon 15/723:59SEA - IAD
1 stop10h 11mSun Country Air
Tue 23/711:32IAD - SEA
1 stop26h 40mSun Country Air
Deal found 2/6£231
Tue 2/718:02SEA - IAD
1 stop13h 24mSun Country Air
Fri 12/720:00IAD - SEA
1 stop15h 46mSun Country Air
Deal found 1/6£239
Tue 16/719:10SEA - IAD
1 stop12h 20mSun Country Air
Mon 22/719:05IAD - SEA
1 stop19h 07mSun Country Air
Deal found 2/6£247
Mon 1/723:59SEA - IAD
1 stop7h 58mSun Country Air
Fri 12/720:00IAD - SEA
1 stop15h 46mSun Country Air
Deal found 1/6£255
Mon 1/723:59SEA - IAD
1 stop7h 58mSun Country Air
Tue 9/712:00IAD - SEA
1 stop7h 59mSun Country Air
Deal found 1/6£263
Mon 17/618:02SEA - IAD
1 stop13h 55mSun Country Air
Sat 22/612:40IAD - SEA
1 stop22h 22mSun Country Air
Deal found 2/6£267
Sat 13/709:55SEA - IAD
1 stop8h 42mSun Country Air
Mon 22/719:05IAD - SEA
1 stop19h 07mSun Country Air
Deal found 2/6£275
Thu 13/623:59SEA - IAD
1 stop9h 58mSun Country Air
Sat 22/612:40IAD - SEA
1 stop11h 28mSun Country Air
Deal found 31/5£279
Tue 18/612:13SEA - IAD
1 stop19h 13mSun Country Air
Sat 22/612:40IAD - SEA
1 stop22h 22mSun Country Air
Deal found 2/6£282

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

Explore cheap flight options specifically provided by United Airlines for the route between Seattle and Washington, D.C.. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 903,732 searches. Data last updated 2 June 2024.
Take a gander at the lowest prices we've found on United Airlines flights from Seattle to Washington, D.C.. Deals are refreshing constantly so come back soon for more options.
Thu 1/822:30SEA - IAD
Nonstop4h 59mUnited Airlines
Mon 5/822:10IAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 2/6£250
Tue 9/722:30SEA - IAD
Nonstop4h 59mUnited Airlines
Tue 16/722:10IAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 1/6£296
Mon 1/700:30SEA - IAD
1 stop8h 22mUnited Airlines
Tue 30/707:01IAD - SEA
1 stop10h 28mUnited Airlines
Deal found 1/6£311
Tue 6/823:47SEA - IAD
1 stop9h 05mUnited Airlines
Tue 27/812:45IAD - SEA
2 stops12h 14mUnited Airlines
Deal found 2/6£315
Tue 13/818:35SEA - IAD
1 stop7h 50mUnited Airlines
Mon 19/812:45IAD - SEA
2 stops12h 14mUnited Airlines
Deal found 1/6£316
Tue 9/700:30SEA - DCA
1 stop7h 09mUnited Airlines
Tue 16/713:30DCA - SEA
1 stop8h 12mUnited Airlines
Deal found 1/6£342
Mon 10/618:35SEA - IAD
1 stop13h 51mUnited Airlines
Mon 24/622:15IAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 1/6£439
Wed 12/615:35SEA - IAD
1 stop10h 50mUnited Airlines
Fri 21/622:15IAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 2/6£464
Mon 10/622:25SEA - IAD
Nonstop4h 59mUnited Airlines
Mon 24/622:15IAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 2/6£469

Cheap Seattle to Washington, D.C. flights in June & July 2024

Find cheap flight options from Seattle to Washington, D.C. specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 903,732 searches. Prices were last updated on 2 June 2024.
Check out some of the best flight deals from Seattle to Washington, D.C. in 2024. Check back regularly for other flight deals.
Tue 11/617:20SEA - IAD
1 stop14h 06mSun Country Air
Sun 16/608:00IAD - SEA
1 stop17h 54mSun Country Air
Deal found 2/6£247
Tue 11/617:20SEA - IAD
1 stop14h 06mSun Country Air
Wed 3/711:23IAD - SEA
1 stop23h 32mSun Country Air
Deal found 1/6£255
Mon 10/618:15SEA - IAD
1 stop13h 22mSun Country Air
Sun 16/608:00IAD - SEA
1 stop11h 55mSun Country Air
Deal found 2/6£267
Fri 14/623:59SEA - IAD
1 stop9h 58mSun Country Air
Sun 16/608:00IAD - SEA
1 stop11h 55mSun Country Air
Deal found 2/6£275
Thu 13/623:59SEA - IAD
1 stop9h 58mSun Country Air
Sat 22/612:40IAD - SEA
1 stop11h 28mSun Country Air
Deal found 31/5£279
Tue 18/612:13SEA - IAD
1 stop19h 13mSun Country Air
Sat 22/612:40IAD - SEA
1 stop11h 28mSun Country Air
Deal found 2/6£282
Sun 30/623:38SEA - IAD
Nonstop4h 52mAlaska Airlines
Fri 5/716:16IAD - SEA
1 stop10h 28mAlaska Airlines
Deal found 2/6£284
Thu 20/623:59SEA - IAD
1 stop10h 38mSun Country Air
Wed 26/611:16IAD - SEA
1 stop14h 38mSun Country Air
Deal found 2/6£286
Tue 18/612:13SEA - IAD
1 stop19h 13mSun Country Air
Wed 26/611:16IAD - SEA
1 stop14h 38mSun Country Air
Deal found 1/6£290

Seattle to Washington, D.C. 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Washington, D.C. in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 903,732 searches. Data last updated 2 June 2024.
Check out some of the best flight deals from Seattle to Washington, D.C. in 2024. Check back regularly for other flight deals.
Wed 28/816:06SEA - IAD
Nonstop4h 53mAlaska Airlines
Tue 3/919:09IAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 1/6£217
Thu 19/922:16SEA - DCA
1 stop8h 28mJetBlue
Mon 23/913:30DCA - SEA
1 stop10h 36mJetBlue
Deal found 1/6£218
Wed 28/816:06SEA - IAD
Nonstop4h 53mAlaska Airlines
Sun 1/907:00IAD - SEA
Nonstop5h 39mAlaska Airlines
Deal found 2/6£222
Wed 28/816:06SEA - IAD
Nonstop4h 53mAlaska Airlines
Tue 3/916:16IAD - SEA
1 stop10h 26mAlaska Airlines
Deal found 2/6£224
Wed 31/723:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Tue 13/818:37IAD - SEA
Nonstop5h 53mAlaska Airlines
Deal found 1/6£227
Tue 13/807:00SEA - IAD
1 stop8h 36mAlaska Airlines
Tue 20/816:13IAD - SEA
Nonstop5h 46mAlaska Airlines
Deal found 1/6£229
Mon 15/723:59SEA - IAD
1 stop10h 11mSun Country Air
Tue 23/711:32IAD - SEA
1 stop26h 40mSun Country Air
Deal found 2/6£231
Tue 1/1009:35SEA - IAD
1 stop8h 55mAlaska Airlines
Wed 9/1009:00IAD - SEA
1 stop10h 50mAlaska Airlines
Deal found 2/6£232
Tue 13/805:45SEA - IAD
1 stop9h 51mAlaska Airlines
Mon 9/916:13IAD - SEA
Nonstop5h 46mAlaska Airlines
Deal found 1/6£234

Direct flights to Washington, D.C. from Seattle

Discover direct flight options from Seattle to Washington, D.C.. Find direct flights with no stopovers, providing a convenient travel experience. Explore direct flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 903,732 searches. Data last updated 2 June 2024.
To help reduce your travel time, choose from one of these non-stop flights from Seattle to Washington, D.C.. If you're looking for other options for flights from Seattle to Washington, D.C., make sure to update the search form at the top of page.
Wed 28/816:06SEA - IAD
Nonstop4h 53mAlaska Airlines
Sat 31/819:09IAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 2/6£217
Wed 28/816:06SEA - IAD
Nonstop4h 53mAlaska Airlines
Fri 6/919:09IAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 2/6£222
Wed 31/723:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Tue 13/818:37IAD - SEA
Nonstop5h 53mAlaska Airlines
Deal found 1/6£227
Sat 28/921:55SEA - IAD
Nonstop5h 06mDelta
Sat 12/1017:55IAD - SEA
Nonstop5h 52mDelta
Deal found 2/6£241
Mon 30/921:55SEA - IAD
Nonstop5h 06mDelta
Tue 15/1007:50IAD - SEA
Nonstop5h 54mDelta
Deal found 2/6£246
Wed 14/823:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Sat 24/816:13IAD - SEA
Nonstop5h 46mAlaska Airlines
Deal found 31/5£249
Thu 1/822:30SEA - IAD
Nonstop4h 59mUnited Airlines
Mon 5/822:10IAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 2/6£250
Mon 12/823:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Sun 8/919:09IAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 1/6£253
Sun 4/823:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Sat 31/819:09IAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 2/6£272

Seattle to Washington, D.C. flights leaving soon

Find last-minute flight options from Seattle to Washington, D.C. for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 903,732 searches. Data last updated 2 June 2024.
Book one of these great deals on flights from Seattle to Washington, D.C.. To prevent any unwanted surprises, users should verify their flight info before booking.
Tue 11/617:20SEA - IAD
1 stop14h 06mSun Country Air
Sun 16/608:00IAD - SEA
1 stop17h 54mSun Country Air
Deal found 2/6£247
Tue 11/617:20SEA - IAD
1 stop14h 06mSun Country Air
Wed 3/711:23IAD - SEA
1 stop23h 32mSun Country Air
Deal found 1/6£255
Mon 10/618:15SEA - IAD
1 stop13h 22mSun Country Air
Sun 16/608:00IAD - SEA
1 stop11h 55mSun Country Air
Deal found 2/6£267
Sun 9/623:59SEA - IAD
1 stop6h 58mSun Country Air
Sat 22/612:40IAD - SEA
1 stop11h 28mSun Country Air
Deal found 31/5£294
Tue 11/617:20SEA - IAD
1 stop14h 06mSun Country Air
Sat 15/613:50IAD - SEA
1 stop30h 05mSun Country Air
Deal found 2/6£314
Sun 9/623:59SEA - IAD
1 stop6h 58mSun Country Air
Tue 11/611:30IAD - SEA
1 stop25h 45mSun Country Air
Deal found 2/6£318
Wed 12/617:50SEA - IAD
1 stop14h 56mSun Country Air
Sat 15/613:50IAD - SEA
1 stop30h 05mSun Country Air
Deal found 1/6£330
Mon 10/618:15SEA - IAD
1 stop13h 22mSun Country Air
Sun 23/613:43IAD - SEA
1 stop21h 23mSun Country Air
Deal found 2/6£349
Sat 8/617:00SEA - IAD
1 stop16h 53mSun Country Air
Tue 11/611:30IAD - SEA
1 stop25h 45mSun Country Air
Deal found 2/6£381

One-way flights to Washington, D.C. from Seattle

Search for one-way flight options from Seattle to Washington, D.C.. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 903,732 searches. Data last updated 2 June 2024.
Take a look at some of the one-way flights we've detected from Seattle to Washington, D.C.. Users needing a return flight from Seattle to Washington, D.C. should utilize the search form above.
Thu 11/720:50SEA - DCA
1 stop7h 54mJetBlue
Deal found 1/6£90
Sat 31/808:35SEA - IAD
Nonstop5h 00mDelta
Deal found 2/6£109
Fri 26/721:59SEA - IAD
Nonstop4h 57mDelta
Deal found 1/6£114
Tue 23/718:07SEA - IAD
1 stop13h 23mSun Country Air
Deal found 2/6£116
Mon 15/723:59SEA - IAD
1 stop10h 11mSun Country Air
Deal found 1/6£120
Thu 4/707:00SEA - IAD
1 stop8h 36mAlaska Airlines
Deal found 2/6£121
Wed 10/723:59SEA - IAD
1 stop8h 18mSun Country Air
Deal found 1/6£124
Wed 10/720:50SEA - DCA
1 stop8h 55mJetBlue
Deal found 1/6£128
Wed 21/821:59SEA - IAD
Nonstop4h 57mDelta
Deal found 1/6£133

Find flights from Seattle to Washington, D.C. within your budget

Customise your flight search to find flights from Seattle to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 903,732 searches. Data last updated 2 June 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£217 - £328

Route

Depart

Return

Price

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Wed 28/8

Nonstop4h 57m

Washington, D.C. Dulles Intl

Tue 3/9

Nonstop5h 47m

£217

Seattle/Tacoma IntlWashington, D.C. Reagan-National

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Thu 19/9

1 stop8h 28m

Washington, D.C. Reagan-National

Mon 23/9

1 stop10h 36m

£218

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Wed 31/7

Nonstop4h 52m

Washington, D.C. Dulles Intl

Tue 3/9

Nonstop5h 46m

£222

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Wed 28/8

Nonstop4h 53m

Washington, D.C. Dulles Intl

Tue 3/9

1 stop10h 26m

£224

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Mon 15/7

1 stop10h 11m

Washington, D.C. Dulles Intl

Tue 23/7

1 stop26h 40m

£231

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Tue 2/7

1 stop13h 24m

Washington, D.C. Dulles Intl

Fri 12/7

1 stop15h 46m

£239

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Tue 3/9

Nonstop4h 57m

Washington, D.C. Dulles Intl

Thu 12/9

Nonstop5h 59m

£246

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Thu 1/8

Nonstop4h 59m

Washington, D.C. Dulles Intl

Mon 5/8

Nonstop5h 44m

£250

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Thu 1/8

2 stops15h 35m

Washington, D.C. Dulles Intl

Mon 5/8

2 stops15h 40m

£328

Flights are sorted by cheapest first

Deals found on 2/6

How far ahead should I book a flight from Seattle to Washington, D.C.?

Use this chart to determine the optimal time to book a return flight from Seattle to Washington, D.C.. Price data was last updated on 31 May 2024.
To ensure you get the cheapest price possible for a flight from Seattle to Washington, D.C., you should look to book at least 57 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Search Deals

Best time to book a flight from Seattle to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Seattle with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature and rainfall totals by month.

WAS

Temperature

2 - 27 °C

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated 2 June 2024.
Read through reviews of airlines operating flights from Seattle to Washington, D.C., such as Sun Country Air, United Airlines and Alaska Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very Good
5,949 reviews

Crew

8.7

Overall

8.2

Comfort

8.1

Entertainment

7.8

Boarding

8.3

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Southwest
8.2
Very Good
5,949 reviews
Southwest
8.2
Very Good
5,949 reviews

Crew

8.7

Overall

8.2

Comfort

8.1

Entertainment

7.8

Boarding

8.3

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

8.1
Very Good
9,197 reviews
Southwest
8.2
Very Good
5,949 reviews

Crew

8.7

Overall

8.2

Comfort

8.1

Entertainment

7.8

Boarding

8.3

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

8.0
Very Good
10,402 reviews
Southwest
8.2
Very Good
5,949 reviews

Crew

8.7

Overall

8.2

Comfort

8.1

Entertainment

7.8

Boarding

8.3

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

7.6
Good
4,336 reviews
Southwest
8.2
Very Good
5,949 reviews

Crew

8.7

Overall

8.2

Comfort

8.1

Entertainment

7.8

Boarding

8.3

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

7.4
Good
10,755 reviews
Southwest
8.2
Very Good
5,949 reviews

Crew

8.7

Overall

8.2

Comfort

8.1

Entertainment

7.8

Boarding

8.3

Food

7.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Seattle to Washington, D.C.?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Washington, D.C. from Seattle. Booking flights from Seattle/Tacoma Intl (SEA) to Washington, D.C. should be relatively easy as there are 21 daily outbound flights to Washington, D.C. from 0 different airlines.

  • Can I find flights from Seattle to Washington, D.C. for under £300 on Cheapflights?

    Yes, there are multiple flights from Seattle to Washington, D.C. for under £300. The cheapest flight booked recently is on Delta for just £217, but on average you can expect to pay £239.

  • Are there nonstop flights from Seattle to Washington, D.C. for under £300 on Cheapflights?

    Cheapflights has at least 20 direct flights from Seattle to Washington, D.C. under £300. A good price for a nonstop flight from Seattle to Washington, D.C. is less than £279.

  • Are there last-minute flights available from Seattle to Washington, D.C. for under £300?

    There are currently 20+ open flights from Seattle to Washington, D.C. within the next 7 days for less than £300.

  • What days are direct flights available from Seattle to Washington, D.C.?

    Direct flights are available for this route on the following days: Tuesday, Wednesday, Thursday, Friday.

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

    On average, you can expect to see 9 flights from Seattle to Washington, D.C. a day.
    Morning (6am - Midday) - 44% of flight departures
    Afternoon (Midday - 6pm) - 22% of flight departures
    Evening (6pm - Midnight) - 33% of flight departures

  • How long is the flight from Seattle to Washington, D.C.?

    Delta, JetBlue, and Alaska Airlines can get you from Seattle to Washington, D.C. in just under 4h 52m. Your travel time can differ by up to 3h 36m. Airlines will cover a distance of 2313 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from Seattle to Washington, D.C. round-trip?

    Flying on Delta is currently your cheapest option to Washington, D.C., with prices starting at £217. Additional return tickets that might be worth considering are offered by JetBlue and Alaska Airlines, with the lowest prices starting at £218 and £222, respectively. Delta is 31% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Washington, D.C. one-way?

    The cheapet airlines for a one-way flight from Seattle to Washington, D.C. are JetBlue (£90), Delta (£109), and Sun Country Air (£116).

  • What are the most reliable airlines from Seattle to Washington, D.C.?

    Consider Scandinavian Airlines (96%), Avianca (92%) or United Airlines (90%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Washington, D.C..

  • What does SEA to IAD mean?

    SEA and IAD are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. SEA to IAD refers to a flight route from Seattle/Tacoma Intl Airport to Washington, D.C. Dulles Intl Airport. Baltimore/Washington Airport (BWI), Washington, D.C. Reagan-National Airport (DCA) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from Seattle to Washington, D.C. that include extra baggage allowance?

    The amount of baggage you can bring on your Seattle to Washington, D.C. flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Seattle to Washington, D.C. with specific airlines?

    Yes, Cheapflights allows you to browse and filter Seattle to Washington, D.C. flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Seattle to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Seattle to Washington, D.C. flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Washington, D.C..

  • Can I find deals for business class flights from Seattle to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Seattle to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Seattle to Washington, D.C. that allow pets onboard?

    Many airlines flying from Seattle to Washington, D.C. offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Seattle to Washington, D.C.?

    Yes, you can often find last-minute deals on Seattle to Washington, D.C. flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Seattle to Washington, D.C. flight deals updated?

    The Seattle to Washington, D.C. flight deals you see on this page were last updated on 2/6.

  • What is the cheapest month to book a flight from Seattle to Washington, D.C.?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Washington, D.C. (average of £599). Flying from Seattle to Washington, D.C. in July is currently the most expensive (average of £873). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Search flights from Seattle to Washington, D.C. by cabin class

Find flights from Seattle to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from Seattle to Washington, D.C.

Find hourly flight availability from Seattle to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 2 June 2024.
1%of flight departuresEarly morningMidnight to 6 am
49%of flight departuresMorning6 am to noon
12%of flight departuresAfternoonNoon to 6 pm
38%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Midday
6 PM

Weekly flight availability from Seattle to Washington, D.C.

Explore weekly flight availability from Seattle to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 2 June 2024.
Monday23daily flights
Tuesday20daily flights
Wednesday21daily flights
Thursday20daily flights
Friday22daily flights
Saturday22daily flights
Sunday22daily flights

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How does Cheapflights help users find flights from Seattle to Washington, D.C.?

Cheapflights helps you search for flights from Seattle to Washington, D.C. via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Washington, D.C.?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Seattle to Washington, D.C..

Can Cheapflights find flights from Seattle to Washington, D.C. with no change fees?

Need flexible booking options for your flight to Washington, D.C. from Seattle? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Seattle to Washington, D.C. become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Washington, D.C. from Seattle today and book when prices fit your budget.

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