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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 4/7. 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
27 May — 3 Jun1
1 adult
Mon 27/5
Mon 3/6

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 22 May 2024.

Popular in

June

Cheapest in

February

Round-trip from

£441

One-way from

£148
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 50 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 £316. You can even find prices in February for less than £316, 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 23%.

When is the cheapest time to fly from Seattle to Washington, D.C. (SEA - 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 863,249 searches. Data last updated 22 May 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.
Sat 1/609:10SEA - IAD
1 stop8h 37mSun Country Air
Wed 5/611:20IAD - SEA
1 stop23h 42mSun Country Air
Deal found 21/5£224
Mon 3/617:05SEA - IAD
1 stop15h 03mSun Country Air
Wed 5/611:20IAD - SEA
1 stop23h 42mSun Country Air
Deal found 22/5£232
Tue 4/611:45SEA - IAD
1 stop19h 36mSun Country Air
Thu 6/612:03IAD - SEA
1 stop13h 51mSun Country Air
Deal found 21/5£240
Sun 2/623:59SEA - IAD
1 stop13h 32mSun Country Air
Sun 16/608:00IAD - SEA
1 stop14h 40mSun Country Air
Deal found 21/5£248
Sat 13/709:55SEA - IAD
1 stop8h 42mSun Country Air
Mon 15/711:33IAD - SEA
1 stop14h 20mSun Country Air
Deal found 21/5£251
Tue 4/611:45SEA - IAD
1 stop19h 36mSun Country Air
Thu 6/612:03IAD - SEA
1 stop7h 45mSun Country Air
Deal found 22/5£255
Tue 18/612:13SEA - IAD
1 stop19h 13mSun Country Air
Wed 26/611:16IAD - SEA
1 stop14h 38mSun Country Air
Deal found 21/5£259
Sat 1/609:10SEA - IAD
1 stop8h 37mSun Country Air
Wed 12/611:16IAD - SEA
1 stop8h 26mSun Country Air
Deal found 21/5£263
Tue 4/611:45SEA - IAD
1 stop19h 36mSun Country Air
Mon 10/610:50IAD - SEA
1 stop9h 18mSun Country Air
Deal found 21/5£267

Cheap Delta flights from Seattle to Washington, D.C.

Explore cheap flight options specifically provided by Delta 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 863,249 searches. Data last updated 22 May 2024.
Take a gander at the lowest prices we've found on Delta flights from Seattle to Washington, D.C.. Deals are refreshing constantly so come back soon for more options.
Thu 8/822:00SEA - IAD
Nonstop5h 05mDelta
Tue 13/807:00IAD - SEA
Nonstop5h 34mDelta
Deal found 22/5£227
Wed 21/822:00SEA - IAD
Nonstop5h 05mDelta
Wed 28/807:00IAD - SEA
Nonstop5h 34mDelta
Deal found 20/5£241
Thu 26/922:00SEA - IAD
Nonstop4h 56mDelta
Tue 15/1007:50IAD - SEA
Nonstop5h 54mDelta
Deal found 22/5£246
Fri 16/822:00SEA - IAD
Nonstop5h 05mDelta
Wed 21/807:00IAD - SEA
Nonstop5h 34mDelta
Deal found 21/5£265
Tue 2/721:55SEA - IAD
Nonstop5h 03mDelta
Fri 12/717:36IAD - SEA
Nonstop6h 03mDelta
Deal found 21/5£270
Wed 4/922:00SEA - IAD
Nonstop5h 05mDelta
Tue 10/912:00IAD - SEA
1 stop11h 06mDelta
Deal found 20/5£272
Tue 27/822:00SEA - IAD
Nonstop5h 05mDelta
Sun 1/906:10IAD - SEA
1 stop11h 03mDelta
Deal found 20/5£288
Wed 14/822:00SEA - IAD
Nonstop5h 05mDelta
Wed 21/807:00IAD - SEA
Nonstop5h 34mDelta
Deal found 20/5£288
Tue 2/721:55SEA - IAD
Nonstop5h 03mDelta
Mon 8/717:36IAD - SEA
Nonstop6h 03mDelta
Deal found 21/5£309

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

Find cheap flight options from Seattle to Washington, D.C. specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 863,249 searches. Prices were last updated on 22 May 2024.
Check out some of the best flight deals from Seattle to Washington, D.C. in 2024. Check back regularly for other flight deals.
Mon 3/608:50SEA - IAD
1 stop23h 18mSun Country Air
Wed 5/611:20IAD - SEA
1 stop23h 42mSun Country Air
Deal found 21/5£232
Tue 4/611:45SEA - IAD
1 stop19h 36mSun Country Air
Sun 16/608:00IAD - SEA
1 stop11h 55mSun Country Air
Deal found 22/5£240
Tue 4/611:45SEA - IAD
1 stop19h 36mSun Country Air
Wed 12/611:16IAD - SEA
1 stop8h 26mSun Country Air
Deal found 22/5£248
Wed 29/517:45SEA - IAD
1 stop13h 47mSun Country Air
Mon 3/617:25IAD - SEA
1 stop20h 15mSun Country Air
Deal found 22/5£255
Tue 18/612:13SEA - IAD
1 stop19h 13mSun Country Air
Wed 26/611:16IAD - SEA
1 stop14h 38mSun Country Air
Deal found 22/5£259
Wed 26/617:43SEA - IAD
1 stop14h 37mSun Country Air
Mon 8/712:33IAD - SEA
1 stop25h 39mSun Country Air
Deal found 22/5£263
Tue 4/611:45SEA - IAD
1 stop19h 36mSun Country Air
Mon 10/610:50IAD - SEA
1 stop9h 18mSun Country Air
Deal found 21/5£267
Fri 31/517:40SEA - IAD
1 stop24h 07mSun Country Air
Mon 3/617:25IAD - SEA
1 stop20h 15mSun Country Air
Deal found 22/5£271
Mon 17/623:38SEA - IAD
Nonstop4h 52mAlaska Airlines
Tue 25/616:16IAD - SEA
1 stop10h 28mAlaska Airlines
Deal found 22/5£273

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 863,249 searches. Data last updated 22 May 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 2/1016:11SEA - IAD
Nonstop4h 48mAlaska Airlines
Wed 9/1007:02IAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 22/5£218
Tue 13/823:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Tue 20/819:09IAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 22/5£222
Tue 1/1008:00SEA - IAD
1 stop10h 30mAlaska Airlines
Tue 15/1019:06IAD - SEA
Nonstop5h 54mAlaska Airlines
Deal found 22/5£225
Wed 31/721:59SEA - IAD
Nonstop4h 57mDelta
Tue 13/807:00IAD - SEA
Nonstop5h 34mDelta
Deal found 21/5£227
Tue 13/823:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Tue 20/816:16IAD - SEA
1 stop10h 26mAlaska Airlines
Deal found 22/5£229
Mon 3/608:50SEA - IAD
1 stop23h 18mSun Country Air
Wed 5/611:20IAD - SEA
1 stop23h 42mSun Country Air
Deal found 21/5£232
Tue 1/1009:35SEA - IAD
1 stop8h 55mAlaska Airlines
Wed 9/1009:00IAD - SEA
1 stop10h 50mAlaska Airlines
Deal found 22/5£233
Tue 13/823:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Mon 19/807:10IAD - SEA
1 stop9h 50mAlaska Airlines
Deal found 22/5£234
Tue 4/611:45SEA - IAD
1 stop19h 36mSun Country Air
Sun 16/608:00IAD - SEA
1 stop11h 55mSun Country Air
Deal found 22/5£240

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 863,249 searches. Data last updated 22 May 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 2/1016:11SEA - IAD
Nonstop4h 48mAlaska Airlines
Wed 9/1007:02IAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 22/5£218
Tue 13/823:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Tue 20/819:09IAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 22/5£222
Thu 8/822:00SEA - IAD
Nonstop5h 05mDelta
Tue 13/807:00IAD - SEA
Nonstop5h 34mDelta
Deal found 21/5£227
Wed 21/822:00SEA - IAD
Nonstop5h 05mDelta
Wed 28/807:00IAD - SEA
Nonstop5h 34mDelta
Deal found 20/5£241
Thu 26/922:00SEA - IAD
Nonstop4h 56mDelta
Tue 15/1007:50IAD - SEA
Nonstop5h 54mDelta
Deal found 22/5£246
Thu 15/823:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Tue 20/819:09IAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 20/5£249
Wed 28/816:06SEA - IAD
Nonstop4h 53mAlaska Airlines
Mon 2/919:09IAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 21/5£254
Fri 16/822:00SEA - IAD
Nonstop5h 05mDelta
Tue 20/807:00IAD - SEA
Nonstop5h 34mDelta
Deal found 21/5£265
Tue 2/721:55SEA - IAD
Nonstop5h 03mDelta
Fri 12/717:36IAD - SEA
Nonstop6h 03mDelta
Deal found 21/5£270

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 863,249 searches. Data last updated 22 May 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.
Wed 29/517:45SEA - IAD
1 stop13h 47mSun Country Air
Wed 5/611:20IAD - SEA
1 stop23h 42mSun Country Air
Deal found 22/5£232
Wed 29/517:45SEA - IAD
1 stop13h 47mSun Country Air
Mon 3/617:25IAD - SEA
1 stop20h 15mSun Country Air
Deal found 22/5£255
Fri 31/517:40SEA - IAD
1 stop24h 07mSun Country Air
Mon 3/617:25IAD - SEA
1 stop20h 15mSun Country Air
Deal found 22/5£271
Wed 29/517:45SEA - IAD
1 stop13h 47mSun Country Air
Fri 7/612:33IAD - SEA
1 stop13h 21mSun Country Air
Deal found 22/5£287
Fri 31/523:59SEA - IAD
1 stop17h 48mSun Country Air
Fri 7/612:33IAD - SEA
1 stop13h 21mSun Country Air
Deal found 22/5£303
Wed 29/520:40SEA - DCA
1 stop10h 05mJetBlue
Tue 4/613:30DCA - SEA
1 stop9h 00mJetBlue
Deal found 22/5£388
Sat 1/623:18SEA - IAD
Nonstop5h 12mAlaska Airlines
Sat 31/807:00IAD - SEA
Nonstop5h 39mAlaska Airlines
Deal found 22/5£391
Mon 27/523:59SEA - IAD
1 stop10h 03mSun Country Air
Mon 3/617:25IAD - SEA
1 stop20h 15mSun Country Air
Deal found 22/5£393
Mon 27/523:59SEA - IAD
1 stop10h 03mSun Country Air
Sun 2/612:25IAD - SEA
1 stop13h 25mSun Country Air
Deal found 22/5£424

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 863,249 searches. Data last updated 22 May 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 4/720:50SEA - DCA
1 stop10h 53mJetBlue
Deal found 22/5£90
Tue 27/822:00SEA - IAD
Nonstop5h 05mDelta
Deal found 21/5£109
Fri 31/523:59SEA - IAD
1 stop17h 48mSun Country Air
Deal found 21/5£112
Fri 14/621:55SEA - IAD
Nonstop5h 05mDelta
Deal found 22/5£114
Sat 14/906:00SEA - IAD
1 stop8h 53mAlaska Airlines
Deal found 21/5£116
Tue 4/611:45SEA - IAD
1 stop19h 36mSun Country Air
Deal found 22/5£120
Tue 13/817:45SEA - IAD
1 stop8h 42mAlaska Airlines
Deal found 21/5£121
Wed 17/711:33SEA - IAD
1 stop14h 54mAlaska Airlines
Deal found 21/5£126
Fri 12/723:59SEA - IAD
1 stop18h 38mSun Country Air
Deal found 21/5£128

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 863,249 searches. Data last updated 22 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£218 - £296

Route

Depart

Return

Price

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Wed 2/10

Nonstop4h 48m

Washington, D.C. Dulles Intl

Sat 12/10

Nonstop5h 51m

£218

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Tue 13/8

Nonstop4h 52m

Washington, D.C. Dulles Intl

Tue 20/8

Nonstop5h 51m

£222

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Sat 1/6

1 stop8h 37m

Washington, D.C. Dulles Intl

Wed 5/6

1 stop23h 42m

£224

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Tue 1/10

1 stop10h 30m

Washington, D.C. Dulles Intl

Wed 9/10

Nonstop5h 54m

£225

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Thu 8/8

Nonstop5h 05m

Washington, D.C. Dulles Intl

Tue 13/8

Nonstop5h 34m

£227

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Mon 3/6

1 stop15h 03m

Washington, D.C. Dulles Intl

Wed 5/6

1 stop23h 42m

£232

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Wed 21/8

Nonstop5h 05m

Washington, D.C. Dulles Intl

Wed 28/8

Nonstop5h 34m

£241

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

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Sat 9/11

1 stop9h 47m

Washington, D.C. Reagan-National

Mon 11/11

1 stop12h 37m

£256

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Tue 2/7

Nonstop4h 59m

Washington, D.C. Dulles Intl

Tue 30/7

Nonstop5h 44m

£296

Flights are sorted by cheapest first

Deals found on 22/5

When is the best time to 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 10 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 49 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 22 May 2024.
Read through reviews of airlines operating flights from Seattle to Washington, D.C., such as Sun Country Air, Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very Good
6,004 reviews

Food

7.3

Overall

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.8

Boarding

8.3

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
6,004 reviews
Southwest
8.2
Very Good
6,004 reviews

Food

7.3

Overall

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.8

Boarding

8.3

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
9,171 reviews
Southwest
8.2
Very Good
6,004 reviews

Food

7.3

Overall

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.8

Boarding

8.3

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
10,585 reviews
Southwest
8.2
Very Good
6,004 reviews

Food

7.3

Overall

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.8

Boarding

8.3

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
4,426 reviews
Southwest
8.2
Very Good
6,004 reviews

Food

7.3

Overall

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.8

Boarding

8.3

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
10,852 reviews
Southwest
8.2
Very Good
6,004 reviews

Food

7.3

Overall

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.8

Boarding

8.3

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 Alaska Airlines for just £218, 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 £269.

  • 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: Sunday, Monday, Wednesday, Thursday, Friday, Saturday.

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

    On average, you can expect to see 16 flights from Seattle to Washington, D.C. a day.
    Morning (6am - Midday) - 50% of flight departures
    Evening (6pm - Midnight) - 50% of flight departures

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

    Alaska Airlines, Sun Country Air, and Delta can get you from Seattle to Washington, D.C. in just under 4h 48m. Your travel time can differ by up to 3h 49m. 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 Alaska Airlines is currently your cheapest option to Washington, D.C., with prices starting at £218. Additional return tickets that might be worth considering are offered by Sun Country Air and Delta, with the lowest prices starting at £224 and £227, respectively. Alaska Airlines 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 (£112).

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

    Consider Scandinavian Airlines (96%), Brussels Airlines (93%) or Lufthansa (93%) 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 22/5.

  • When is the best time to book a flight from Seattle to Washington, D.C.?

    Currently, November is the cheapest month in which you can book a flight from Seattle to Washington, D.C. (average of £597). Flying from Seattle to Washington, D.C. in June is currently the most expensive (average of £857). 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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