Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Seattle to Washington, D.C. from £109

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 11/6. 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
24 May — 31 May1
1 adult
Fri 24/5
Fri 31/5

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 19 May 2024.

Popular in

June

Cheapest in

February

Round-trip from

£442

One-way from

£179
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 £356.

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 £317. You can even find prices in February for less than £317, 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 Alaska Airlines flights from Seattle to Washington, D.C.

Explore cheap flight options specifically provided by Alaska 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 835,519 searches. Data last updated 19 May 2024.
Peruse some of the lowest-priced Alaska Airlines 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.
Tue 17/916:06SEA - IAD
Nonstop4h 53mAlaska Airlines
Wed 18/907:00IAD - SEA
Nonstop5h 39mAlaska Airlines
Deal found 18/5£218
Tue 13/823:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Tue 20/819:09IAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 18/5£223
Tue 17/916:06SEA - IAD
Nonstop4h 53mAlaska Airlines
Wed 18/916:16IAD - SEA
1 stop10h 26mAlaska Airlines
Deal found 18/5£225
Tue 13/823:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Mon 19/818:37IAD - SEA
Nonstop5h 53mAlaska Airlines
Deal found 18/5£228
Tue 13/823:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Tue 20/816:16IAD - SEA
1 stop10h 26mAlaska Airlines
Deal found 18/5£230
Sat 14/906:00SEA - IAD
1 stop8h 53mAlaska Airlines
Sat 21/916:16IAD - SEA
1 stop10h 26mAlaska Airlines
Deal found 18/5£233
Tue 13/823:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Mon 19/816:16IAD - SEA
1 stop10h 28mAlaska Airlines
Deal found 18/5£235
Tue 27/816:06SEA - IAD
Nonstop4h 53mAlaska Airlines
Sat 31/819:09IAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 18/5£250
Tue 10/911:52SEA - IAD
1 stop25h 41mAlaska Airlines
Tue 17/907:00IAD - SEA
Nonstop5h 39mAlaska Airlines
Deal found 18/5£251

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 835,519 searches. Data last updated 19 May 2024.
Take a gander at the lowest prices we've found on Sun Country Air flights from Seattle to Washington, D.C.. Deals are refreshing constantly so come back soon for more options.
Sat 1/609:10SEA - IAD
1 stop8h 37mSun Country Air
Wed 5/611:20IAD - SEA
1 stop23h 42mSun Country Air
Deal found 18/5£224
Tue 2/718:02SEA - IAD
1 stop13h 24mSun Country Air
Tue 30/711:32IAD - SEA
1 stop23h 47mSun Country Air
Deal found 19/5£232
Fri 31/523:59SEA - IAD
1 stop17h 48mSun Country Air
Mon 3/617:25IAD - SEA
1 stop20h 15mSun Country Air
Deal found 17/5£240
Mon 10/618:15SEA - IAD
1 stop13h 22mSun Country Air
Sun 16/608:00IAD - SEA
1 stop11h 55mSun Country Air
Deal found 19/5£248
Tue 4/611:45SEA - IAD
1 stop19h 36mSun Country Air
Thu 6/612:03IAD - SEA
1 stop13h 51mSun Country Air
Deal found 18/5£256
Thu 13/623:59SEA - IAD
1 stop9h 58mSun Country Air
Wed 19/611:16IAD - SEA
1 stop8h 32mSun Country Air
Deal found 18/5£264
Tue 18/612:13SEA - IAD
1 stop19h 13mSun Country Air
Wed 26/611:16IAD - SEA
1 stop14h 38mSun Country Air
Deal found 18/5£268
Wed 12/617:50SEA - IAD
1 stop14h 56mSun Country Air
Wed 19/611:16IAD - SEA
1 stop8h 32mSun Country Air
Deal found 19/5£272
Mon 10/618:15SEA - IAD
1 stop13h 22mSun Country Air
Wed 19/611:16IAD - SEA
1 stop8h 32mSun Country Air
Deal found 19/5£279

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 835,519 searches. Prices were last updated on 19 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.
Sat 1/609:10SEA - IAD
1 stop8h 37mSun Country Air
Mon 3/617:25IAD - SEA
1 stop20h 15mSun Country Air
Deal found 19/5£224
Wed 29/517:45SEA - IAD
1 stop13h 47mSun Country Air
Mon 3/617:25IAD - SEA
1 stop20h 15mSun Country Air
Deal found 19/5£232
Sat 25/508:45SEA - IAD
1 stop8h 37mSun Country Air
Wed 5/611:20IAD - SEA
1 stop23h 42mSun Country Air
Deal found 19/5£240
Fri 31/523:59SEA - IAD
1 stop17h 48mSun Country Air
Mon 3/617:25IAD - SEA
1 stop20h 15mSun Country Air
Deal found 19/5£248
Tue 4/611:45SEA - IAD
1 stop19h 36mSun Country Air
Thu 6/612:03IAD - SEA
1 stop23h 05mSun Country Air
Deal found 19/5£256
Fri 24/517:40SEA - IAD
1 stop23h 42mSun Country Air
Sun 26/512:30IAD - SEA
1 stop22h 25mSun Country Air
Deal found 19/5£264
Tue 11/621:55SEA - IAD
Nonstop5h 05mDelta
Tue 18/607:30IAD - SEA
Nonstop5h 44mDelta
Deal found 19/5£265
Tue 18/612:13SEA - IAD
1 stop19h 13mSun Country Air
Wed 26/611:16IAD - SEA
1 stop14h 38mSun Country Air
Deal found 19/5£268
Tue 11/623:28SEA - IAD
Nonstop5h 12mAlaska Airlines
Mon 17/616:16IAD - SEA
1 stop10h 28mAlaska Airlines
Deal found 19/5£269

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 835,519 searches. Data last updated 19 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.
Sat 7/908:55SEA - IAD
Nonstop5h 10mDelta
Tue 10/917:20IAD - SEA
Nonstop5h 52mDelta
Deal found 19/5£218
Tue 13/823:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Tue 20/819:09IAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 19/5£223
Sat 1/609:10SEA - IAD
1 stop8h 37mSun Country Air
Mon 3/617:25IAD - SEA
1 stop20h 15mSun Country Air
Deal found 19/5£224
Wed 11/916:06SEA - IAD
Nonstop4h 53mAlaska Airlines
Wed 18/916:16IAD - SEA
1 stop10h 26mAlaska Airlines
Deal found 19/5£225
Mon 26/822:00SEA - IAD
Nonstop5h 05mDelta
Fri 6/917:50IAD - SEA
Nonstop5h 47mDelta
Deal found 19/5£228
Tue 13/823:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Tue 20/816:16IAD - SEA
1 stop10h 26mAlaska Airlines
Deal found 19/5£230
Wed 29/517:45SEA - IAD
1 stop13h 47mSun Country Air
Mon 3/617:25IAD - SEA
1 stop20h 15mSun Country Air
Deal found 19/5£232
Wed 14/823:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Mon 19/807:10IAD - SEA
1 stop9h 50mAlaska Airlines
Deal found 19/5£235
Sat 25/508:45SEA - IAD
1 stop8h 37mSun Country Air
Wed 5/611:20IAD - SEA
1 stop23h 42mSun Country Air
Deal found 19/5£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 835,519 searches. Data last updated 19 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.
Sat 7/908:55SEA - IAD
Nonstop5h 10mDelta
Tue 10/917:20IAD - SEA
Nonstop5h 52mDelta
Deal found 19/5£218
Tue 13/823:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Tue 20/819:09IAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 19/5£223
Mon 26/822:00SEA - IAD
Nonstop5h 05mDelta
Fri 6/917:50IAD - SEA
Nonstop5h 47mDelta
Deal found 19/5£228
Sat 28/922:00SEA - IAD
Nonstop4h 56mDelta
Mon 30/917:20IAD - SEA
Nonstop5h 52mDelta
Deal found 19/5£246
Tue 1/1016:11SEA - IAD
Nonstop4h 48mAlaska Airlines
Sun 6/1007:02IAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 19/5£250
Mon 12/823:43SEA - IAD
Nonstop4h 52mAlaska Airlines
Mon 19/818:37IAD - SEA
Nonstop5h 53mAlaska Airlines
Deal found 19/5£254
Tue 11/621:55SEA - IAD
Nonstop5h 05mDelta
Tue 18/607:30IAD - SEA
Nonstop5h 44mDelta
Deal found 19/5£265
Mon 1/721:55SEA - IAD
Nonstop5h 03mDelta
Tue 9/717:36IAD - SEA
Nonstop6h 03mDelta
Deal found 19/5£270
Tue 15/1016:11SEA - IAD
Nonstop4h 48mAlaska Airlines
Sun 20/1019:06IAD - SEA
Nonstop5h 54mAlaska Airlines
Deal found 19/5£273

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 835,519 searches. Data last updated 19 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
Mon 3/617:25IAD - SEA
1 stop20h 15mSun Country Air
Deal found 19/5£232
Sat 25/508:45SEA - IAD
1 stop8h 37mSun Country Air
Wed 5/611:20IAD - SEA
1 stop23h 42mSun Country Air
Deal found 19/5£240
Fri 24/517:40SEA - IAD
1 stop23h 42mSun Country Air
Sun 26/512:30IAD - SEA
1 stop22h 25mSun Country Air
Deal found 19/5£264
Sat 25/508:45SEA - IAD
1 stop8h 37mSun Country Air
Thu 30/508:30IAD - SEA
1 stop11h 30mSun Country Air
Deal found 18/5£354
Wed 29/523:28SEA - IAD
Nonstop5h 12mAlaska Airlines
Mon 3/607:00IAD - SEA
1 stop13h 12mAlaska Airlines
Deal found 19/5£429
Tue 28/523:28SEA - IAD
Nonstop5h 12mAlaska Airlines
Sun 2/607:00IAD - SEA
Nonstop5h 30mAlaska Airlines
Deal found 19/5£432
Tue 28/505:45SEA - IAD
1 stop8h 20mAlaska Airlines
Sun 2/607:00IAD - SEA
Nonstop5h 30mAlaska Airlines
Deal found 19/5£439
Sat 25/522:22SEA - IAD
Nonstop5h 03mDelta
Wed 5/607:31IAD - SEA
Nonstop5h 49mDelta
Deal found 19/5£463
Mon 27/500:40SEA - IAD
1 stop7h 25mDelta
Wed 5/607:31IAD - SEA
Nonstop5h 49mDelta
Deal found 19/5£471

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 835,519 searches. Data last updated 19 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.
Tue 11/621:55SEA - IAD
Nonstop5h 05mDelta
Deal found 19/5£109
Fri 21/617:55SEA - IAD
1 stop23h 49mSun Country Air
Deal found 19/5£113
Mon 10/621:55SEA - IAD
Nonstop5h 05mDelta
Deal found 19/5£114
Tue 4/611:45SEA - IAD
1 stop19h 36mSun Country Air
Deal found 19/5£120
Fri 24/517:40SEA - IAD
1 stop23h 42mSun Country Air
Deal found 19/5£128
Mon 24/623:59SEA - IAD
1 stop7h 31mSun Country Air
Deal found 18/5£132
Wed 19/621:55SEA - IAD
Nonstop5h 05mDelta
Deal found 19/5£133
Thu 13/623:38SEA - IAD
Nonstop4h 52mAlaska Airlines
Deal found 19/5£141
Sun 21/723:59SEA - IAD
1 stop15h 11mSun Country Air
Deal found 19/5£144

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 835,519 searches. Data last updated 19 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£218 - £350

Route

Depart

Return

Price

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Tue 17/9

Nonstop4h 53m

Washington, D.C. Dulles Intl

Wed 18/9

Nonstop5h 39m

£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

£223

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 17/9

Nonstop4h 53m

Washington, D.C. Dulles Intl

Wed 18/9

1 stop10h 26m

£225

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Tue 2/7

1 stop13h 24m

Washington, D.C. Dulles Intl

Tue 30/7

1 stop23h 47m

£232

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Fri 31/5

1 stop17h 48m

Washington, D.C. Dulles Intl

Mon 3/6

1 stop20h 15m

£240

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Sat 28/9

Nonstop4h 56m

Washington, D.C. Dulles Intl

Mon 30/9

Nonstop5h 52m

£246

Seattle/Tacoma IntlWashington, D.C. Dulles Intl

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Wed 24/7

Nonstop4h 59m

Washington, D.C. Dulles Intl

Thu 3/10

Nonstop5h 48m

£302

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

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Mon 10/6

1 stop11h 01m

Washington, D.C. Reagan-National

Wed 19/6

1 stop10h 50m

£350

Flights are sorted by cheapest first

Deals found on 18/5

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

Average price of flights to Washington, D.C. by month

Plan your trip from Seattle to Washington, D.C. by taking into account the cheapest months to travel. The average price of a one-way flight from Seattle to Washington, D.C. is currently £126 while a return flight costs £251. Price data was last updated on 12 May 2024.

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 £861). 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.

January

£471

February

£490

March

£549

April

£528

May

£583

June

£678

July

£675

August

£602

September

£538

October

£504

November

£470

December

£487

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 19 May 2024.
Read through reviews of airlines operating flights from Seattle to Washington, D.C., such as Alaska Airlines, Sun Country Air and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very Good
9,166 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.1

Entertainment

7.3

Crew

8.6

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

8.1
Very Good
9,166 reviews
8.1
Very Good
9,166 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.1

Entertainment

7.3

Crew

8.6

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

8.0
Very Good
10,635 reviews
8.1
Very Good
9,166 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.1

Entertainment

7.3

Crew

8.6

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

7.6
Good
4,447 reviews
8.1
Very Good
9,166 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.1

Entertainment

7.3

Crew

8.6

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

7.4
Good
10,894 reviews
8.1
Very Good
9,166 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.1

Entertainment

7.3

Crew

8.6

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

7.2
Good
621 reviews
8.1
Very Good
9,166 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.1

Entertainment

7.3

Crew

8.6

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

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 £242.

  • 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 £277.

  • 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 16 flights from Seattle to Washington, D.C. a day.
    Morning (6am - Midday) - 38% of flight departures
    Afternoon (Midday - 6pm) - 19% of flight departures
    Evening (6pm - Midnight) - 44% 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 53m. Your travel time can differ by up to 3h 44m. 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 £246, 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 Delta (£109), Sun Country Air (£113), and Alaska Airlines (£141).

  • 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 19/5.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 19 May 2024.
1%of flight departuresEarly morningMidnight to 6 am
47%of flight departuresMorning6 am to noon
32%of flight departuresAfternoonNoon to 6 pm
20%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 19 May 2024.
Monday23daily flights
Tuesday20daily flights
Wednesday21daily flights
Thursday20daily flights
Friday22daily flights
Saturday22daily flights
Sunday22daily flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.