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Cheap flights from Seattle to Washington, D.C. Reagan-National Airport from C$ 240

SEA — DCA
25 Nov — 2 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Reagan-National

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Reagan-National

Tue 1/126:30 a.m. -
1 stop6h 45m
Sat 5/129:25 a.m. -
1 stop10h 20m
Deal found 22/10C$ 479
Mon 30/1112:15 a.m. -
1 stop8h 45m
Wed 9/128:25 a.m. -
2 stops12h 25m
Deal found 22/10C$ 488
Thu 3/129:10 a.m. -
2 stops9h 45m
Mon 7/124:00 p.m. -
2 stops9h 50m
Deal found 22/10C$ 495
Thu 3/126:30 a.m. -
1 stop6h 45m
Sat 5/129:25 a.m. -
1 stop10h 20m
Deal found 26/10C$ 503
Mon 7/129:10 a.m. -
2 stops9h 45m
Tue 8/124:00 p.m. -
2 stops9h 50m
Deal found 25/10C$ 517
Mon 30/1112:15 a.m. -
1 stop7h 00m
Fri 4/123:35 p.m. -
1 stop11h 00m
Deal found 21/10C$ 527
Sat 5/122:02 p.m. -
Nonstop4h 57m
Sat 12/128:00 a.m. -
Nonstop6h 17m
Deal found 22/10C$ 528
Fri 11/124:58 p.m. -
1 stop16h 57m
Wed 16/125:05 p.m. -
Nonstop6h 17m
Deal found 26/10C$ 531

Find flight deals from Seattle to Reagan-National

Round-trip from

C$ 479

One-way from

C$ 240

Popular in

September

Cheapest in

January

Average price

C$ 764
Southwest
  • Southwest
  • 30/11-9/12
  • 2 total stops
  • 18h 00m total
  • Seattle to Washington, D.C.
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Southwest
  • Southwest
  • 17/11-31/12
  • 1 total stop
  • 6h 45m total
  • Seattle to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 151 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 27 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seattle to Washington, D.C. Reagan-National Airport that are best for you.

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Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National

SEADCA

Seattle/Tacoma Intl

Tue 17/11

6:30 a.m.-4:15 p.m.

1 stop6h 45m

Washington, D.C. Reagan-National

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 240

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National

SEADCA

Seattle/Tacoma Intl

Tue 2/3

7:23 a.m.-3:34 p.m.

Nonstop5h 11m

Washington, D.C. Reagan-National

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 293

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National

SEADCA

Seattle/Tacoma Intl

Thu 14/1

6:20 a.m.-4:30 p.m.

1 stop7h 10m

Washington, D.C. Reagan-National

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 307
Quickest round-trip

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National

SEADCA

Seattle/Tacoma Intl

Sun 3/1

8:15 a.m.-4:00 p.m.

Nonstop4h 45m

Washington, D.C. Reagan-National

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 335

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National

SEADCA

Seattle/Tacoma Intl

Wed 25/11

11:47 p.m.-11:00 a.m.

1 stop8h 13m

Washington, D.C. Reagan-National

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 363

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National

SEADCA

Seattle/Tacoma Intl

Wed 7/4

6:00 a.m.-9:00 p.m.

1 stop12h 00m

Washington, D.C. Reagan-National

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 377

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National

SEADCA

Seattle/Tacoma Intl

Sat 21/11

7:20 a.m.-3:13 p.m.

Nonstop4h 53m

Washington, D.C. Reagan-National

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 391

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National

SEADCA

Seattle/Tacoma Intl

Fri 20/11

7:20 a.m.-3:13 p.m.

Nonstop4h 53m

Washington, D.C. Reagan-National

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 399

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National

SEADCA

Seattle/Tacoma Intl

Thu 24/12

7:00 a.m.-5:05 p.m.

1 stop7h 05m

Washington, D.C. Reagan-National

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 426

SeattleWashington, D.C.

SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National

SEADCA

Seattle/Tacoma Intl

Wed 25/11

12:15 a.m.-3:55 p.m.

2 stops12h 40m

Washington, D.C. Reagan-National

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 454

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/10

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from Seattle to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Seattle with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Seattle to Washington, D.C. Reagan-National Airport

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

The best time to book flights from Seattle to Washington, D.C. Reagan-National Airport is 80 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Seattle to Washington, D.C. Reagan-National Airport?

Currently, January is the cheapest month in which you can book a flight from Seattle to Washington, D.C. Reagan-National Airport (average of C$ 500). Flying from Seattle to Washington, D.C. Reagan-National Airport in September is currently the most expensive (average of C$ 879). 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.

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

When flying from Seattle to Washington, D.C. Reagan-National Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Seattle to Washington, D.C. Reagan-National Airport?

Airfare is below average for this route at the moment.

Seattle to Washington, D.C. Reagan-National Airport flights typically cost between C$ 542 and C$ 991 in November.
The cheapest round-trip price found within the last 5 days was C$ 479 on Southwest (30 Nov-9 Dec).

Related info for your journey

  • What airport do you fly from for flights from Seattle to Washington, D.C. Reagan-National?

    If you book a flight to Washington, D.C. Reagan-National from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 18.4 km from the centre of Seattle. There are 4 flights from Seattle/Tacoma Intl to Washington, D.C. Reagan-National per day from 0 different airlines.

  • How long is the flight from Seattle to Washington, D.C. Reagan-National Airport?

    For as low as C$ 542, Southwest can have you in Washington, D.C. Reagan-National Airport from Seattle in 5h 05m. There are 3735 km between Seattle and Washington, D.C. Reagan-National Airport. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    No one likes to see their flight delayed. When booking a flight from Seattle to Washington, D.C. Reagan-National Airport consider choosing Delta (90%), Alaska Airlines (88%) or Cathay Pacific (87%) as they are the most reliable in getting you off to your destination on time.

  • Can I find deals for flights from Seattle to Reagan-National that include hotel bookings?

    Yes. In addition to deals on Seattle to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Reagan-National?

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

  • Can I find deals for business class flights from Seattle to Reagan-National?

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

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

    Currently, January is the cheapest month in which you can book a flight from Seattle to Washington, D.C. Reagan-National Airport (average of C$ 500). Flying from Seattle to Washington, D.C. Reagan-National Airport in September is currently the most expensive (average of C$ 879). 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.

See more FAQs

Travelling to a place near Washington, D.C. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
Silver Spring
Hanover
College Park
Alexandria
Oxon Hill
Gaithersburg
Reston
Herndon
Ellicott City
Arlington
Fredericksburg
Rockville

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Seattle to Reagan-National

Seattle to Dulles Intl flights

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