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DCA - SEA

C$ 157 Find cheap flights from Washington, D.C. to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Seattle departing on 29/5. 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.
1 adult
0 bags
Fri 7/6
Fri 14/6

Search hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Seattle, as well as popular online travel agencies
In the last 7 days, travellers have searched 43,968,530 times on KAYAK, and here is why:

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Cheap flight deals from Washington, D.C. to Seattle (DCA-SEA)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
1:30 p.m. - 7:30 p.m.DCA-SEA
9h 00m1 stop
8:40 p.m. - 9:45 a.m.SEA-DCA
10h 05m1 stop
C$ 315JetBlue
Find Deal
Wed, 29 May - Tue, 4 Jun
10:20 a.m. - 7:30 p.m.DCA-SEA
12h 10m1 stop
8:40 p.m. - 9:45 a.m.SEA-DCA
10h 05m1 stop
C$ 381JetBlue
Find Deal
Wed, 29 May - Mon, 3 Jun
10:20 a.m. - 7:30 p.m.DCA-SEA
12h 10m1 stop
8:40 p.m. - 10:41 a.m.SEA-DCA
11h 01m1 stop
C$ 434JetBlue
Find Deal
Sun, 26 May - Wed, 29 May
12:30 p.m. - 7:30 p.m.DCA-SEA
10h 00m1 stop
8:40 p.m. - 10:41 a.m.SEA-DCA
11h 01m1 stop
C$ 496JetBlue
Find Deal
Tue, 28 May - Wed, 29 May
9:30 a.m. - 9:58 a.m.DCA-SEA
27h 28m1 stop
1:47 p.m. - 9:59 p.m.SEA-DCA
5h 12mdirect
C$ 515Alaska Airlines
Find Deal
Tue, 4 Jun - Wed, 5 Jun
3:00 p.m. - 9:09 p.m.DCA-SEA
9h 09m1 stop
12:30 a.m. - 10:39 a.m.SEA-DCA
7h 09m1 stop
C$ 559United Airlines
Find Deal
Mon, 1 Jul - Tue, 9 Jul
8:20 a.m. - 5:51 p.m.DCA-SEA
12h 31m2 stops
10:26 p.m. - 11:49 a.m.SEA-DCA
10h 23m1 stop
C$ 566United Airlines
Find Deal
Wed, 9 Oct - Tue, 15 Oct
9:20 a.m. - 4:49 p.m.DCA-SEA
10h 29m1 stop
1:55 p.m. - 9:59 p.m.SEA-DCA
5h 04mdirect
C$ 588Alaska Airlines
Find Deal
Tue, 27 Aug - Fri, 30 Aug
6:10 a.m. - 10:32 a.m.DCA-SEA
7h 22m1 stop
12:40 a.m. - 10:28 a.m.SEA-DCA
6h 48m1 stop
C$ 720Delta
Find Deal
Tue, 4 Jun - Mon, 10 Jun
10:09 a.m. - 8:10 p.m.DCA-SEA
13h 01m1 stop
9:45 p.m. - 8:54 a.m.SEA-DCA
8h 09m1 stop
C$ 731Delta
Find Deal
Wed, 12 Jun - Fri, 28 Jun

Flights from Washington, D.C. to Seattle - Travel Insights & Trends

Get data-powered insights and trends into flights from Washington, D.C. to Seattle to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Washington, D.C. Reagan-National Airport to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Washington, D.C. Reagan-National Airport to Seattle is January, where tickets cost C$ 460 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is C$ 737 and C$ 675 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Washington, D.C. Reagan-National Airport to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Washington, D.C. Reagan-National Airport to Seattle, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 52 days before departure.

Which airlines provide the cheapest flights from Washington, D.C. to Seattle?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Washington, D.C. to Seattle found on KAYAK was with JetBlue for C$ 157. JetBlue proposed a round-trip connection from C$ 315 and Alaska Airlines from C$ 515.

How many flights are there between Washington, D.C. Reagan-National Airport and Seattle per day?

Each day, there are between 4 and 5 nonstop flights that take off from Washington, D.C. Reagan-National Airport and land in Seattle, with an average flight time of 5h 41m. The most common departure time is 8:00 a.m. and most flights take off in the morning. Each week, there are 31 flights. The most frequent day of departure is Tuesday, when 16% of all weekly flights depart. The fewest flights depart on a Friday.

Which cabin class options are there for flights between Washington, D.C. Reagan-National Airport and Seattle?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Washington, D.C. to Seattle take?

The duration of a direct flight to Seattle from Washington, D.C. is typically 5h 40m. The journey crosses a distance of 6,012 km.

What’s the earliest departure time from Washington, D.C. to Seattle?

Early birds can take the earliest flight from Washington, D.C. Reagan-National Airport at 8:00 am and will be landing in Seattle at 10:40 am.

What’s the latest departure time from Washington, D.C. to Seattle?

If you prefer to fly at night, the latest flight from Washington, D.C. Reagan-National Airport to Seattle jets off at 5:50 pm and lands at 8:42 pm.

Good to know

Low season

January

High season

August

Cheapest flight

C$ 157
Best time to beat the crowds (31% less expensive on average)
Most popular time to fly (2% more expensive on average)
Flight from Washington, D.C. to Seattle

When to book flights from Washington, D.C. to Seattle

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington, D.C. to Seattle flights

  • Are there private facilities for nursing mothers at DCA?

    Yes. There are two nursing rooms at DCA. One is in Terminal A landside, just before the TSA security checkpoint, and the other is National Hall landside, near the Metro walkway. These rooms are calm private spaces with rocking chairs, power outlets, and changing tables.

  • Where can I find the USO lounge at DCA?

    The USO at the Ronald Reagan Airport is on the Concourse level of Terminal A landside, across from the Lost and Found. Active duty US military personnel and their families can enjoy the services and facilities of the USO at DCA free of charge. Some amenities of this military lounge include refreshments, comfortable seating, TV, and more. The lounge is open 6 am to 6 pm on weekdays and 8 am to 4 pm on weekends.

  • Does SeaTac have any places where I can get a massage?

    Yes. If you want to ease the kinks out of your sore or stiff muscles when you land at SEA, you can go to the Spa Terminal Gateway at Gate A5 on Concourse A. This spa retail outlet offers massages as well as other relaxation treatments.

  • How can I get into Seattle from the Seattle Tacoma Airport?

    For affordable transportation into the city, go to the fourth floor near the parking garage where you will find the Light Rail Station at SeaTac. Catch Light Rail #1, and this train will take you to several different locations throughout the Seattle metropolitan area.

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Reagan-National Airport to Seattle was C$ 115 for a one-way ticket and C$ 230 for a round-trip.

  • Which airlines offer Wi-Fi service onboard planes from Washington, D.C. to Seattle?

    Alaska Airlines, and Delta offer inflight Wi-Fi service on the Washington, D.C. to Seattle flight route.

  • Which aircraft models fly most regularly from Washington, D.C. to Seattle?

    The Boeing 737-800 Passenger/BBJ2 (winglets) is the aircraft model that flies most regularly on the Washington, D.C. to Seattle flight route.

  • Which airline alliances offer flights from Washington, D.C. to Seattle?

    oneworld, and SkyTeam are the airline alliances operating flights between Washington, D.C. and Seattle, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Washington, D.C. to Seattle?

    There are direct flights from Washington, D.C. to Seattle on a daily basis.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Washington, D.C. is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from Washington, D.C. to Seattle

  • The Ronald Reagan Washington National Airport (DCA) is a hub for several airlines, including American Airlines, American Eagle, US Airways, and others. The Seattle-Tacoma International Airport (SEA) is a hub for Delta and Alaska Airlines.
  • Alaska is one airline that offers direct flights from DCA to SEA. Delta, Frontier, American, JetBlue, and United are among the many carriers that offer one-stop flights from DCA to SEA, with stops in places like New York, Boston, Charlotte, Detroit, and other cities. American is one airline that offers a number of two-stop flights from DCA to SEA.
  • At DCA, you can enjoy art installations throughout the airport, beginning in the art deco-style lobby, which retains the distinctive vibe of 1940, the year when it was constructed. At the west end of the lobby, you can see vintage photographs of the airport through the decades.
  • If you are traveling with kids and you need to wait for ground transportation at SeaTac, you can go to the play area that SEA has between Concourse A and Concourse B. Children can play with and climb on oversized toys with an aviation theme.
  • If you want to watch the airplanes landing and taking off at DCA, you can enjoy this from one of the terraces in the Departures area of Terminal B or Terminal C or from the rocking chairs in Terminal A. And as you take off from DCA, take a look out the window to see a unique bird's eye view of the Jefferson Memorial, the Reflecting Pool, and the Washington Monument.
See more tips

Prefer to fly non-stop from Washington, D.C. to Seattle?

Find which airlines fly direct from Reagan-National to Seattle/Tacoma Intl, which days they fly and book direct flights.

Nonstop departures

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

Monday

Air Tahiti Nui, Alaska Airlines, Japan Airlines, +1 more

Air Tahiti Nui, Alaska Airlines, +2 more

Tuesday

Air Tahiti Nui, Alaska Airlines, Finnair, +2 more

Air Tahiti Nui, Alaska Airlines, +3 more

Wednesday

Air Tahiti Nui, Alaska Airlines, Japan Airlines, +1 more

Air Tahiti Nui, Alaska Airlines, +2 more

Thursday

Air Tahiti Nui, Alaska Airlines, Finnair, +2 more

Air Tahiti Nui, Alaska Airlines, +3 more

Friday

Air Tahiti Nui, Alaska Airlines, Japan Airlines, +1 more

Air Tahiti Nui, Alaska Airlines, +2 more

Saturday

Air Tahiti Nui, Alaska Airlines, Finnair, +2 more

Air Tahiti Nui, Alaska Airlines, +3 more

Sunday

Air Tahiti Nui, Alaska Airlines, Japan Airlines, +1 more

Air Tahiti Nui, Alaska Airlines, +2 more

See more nonstop flights

Nonstop returns

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

Monday

Air Tahiti Nui, Alaska Airlines, Japan Airlines, +1 more

Air Tahiti Nui, Alaska Airlines, +2 more

Tuesday

Air Tahiti Nui, Alaska Airlines, Japan Airlines, +1 more

Air Tahiti Nui, Alaska Airlines, +2 more

Wednesday

Air Tahiti Nui, Alaska Airlines, Japan Airlines, +1 more

Air Tahiti Nui, Alaska Airlines, +2 more

Thursday

Air Tahiti Nui, Alaska Airlines, Japan Airlines, +1 more

Air Tahiti Nui, Alaska Airlines, +2 more

Friday

Air Tahiti Nui, Alaska Airlines, Japan Airlines, +1 more

Air Tahiti Nui, Alaska Airlines, +2 more

Saturday

Air Tahiti Nui, Alaska Airlines, Japan Airlines, +1 more

Air Tahiti Nui, Alaska Airlines, +2 more

Sunday

Air Tahiti Nui, Alaska Airlines, Japan Airlines, +1 more

Air Tahiti Nui, Alaska Airlines, +2 more

See more nonstop flights
See more nonstop flights

Book cheap flights from Washington, D.C. to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to Seattle found on KAYAK in the last 72 hours.
29/5Wed
1 stopJetBlue
9h 00mDCA-SEA
C$ 157
26/5Sun
1 stopJetBlue
11h 00mDCA-SEA
C$ 277
26/5Sun
1 stopJetBlue
12h 10mDCA-SEA
C$ 285
4/6Tue
2 stopsAlaska Airlines
15h 24mDCA-SEA
C$ 304
29/5Wed
directAlaska Airlines
5h 43mDCA-SEA
C$ 327
30/5Thu
2 stopsAlaska Airlines
15h 24mDCA-SEA
C$ 331
29/5Wed
2 stopsDelta
13h 22mDCA-SEA
C$ 367
10/9Tue
2 stopsUnited Airlines
22h 26mDCA-SEA
C$ 388
1/6Sat
2 stopsDelta
17h 17mDCA-SEA
C$ 435
5/7Fri
2 stopsUnited Airlines
11h 42mDCA-SEA
C$ 524

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Last minute flights from Washington, D.C. to Seattle

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Washington, D.C. to Seattle that are departing in the next 10 days.
10/5Fri
multi-stopDelta
9h 49mDCA-SEA
13/5Mon
multi-stopDelta
6h 51mSEA-DCA
C$ 1,002
11/5Sat
multi-stopDelta
8h 47mDCA-SEA
16/5Thu
multi-stopDelta
6h 51mSEA-DCA
C$ 1,056
10/5Fri
multi-stopDelta
7h 10mDCA-SEA
13/5Mon
multi-stopDelta
6h 51mSEA-DCA
C$ 1,090
9/5Thu
multi-stopUnited Airlines
8h 23mDCA-SEA
14/5Tue
multi-stopUnited Airlines
13h 02mSEA-DCA
C$ 1,126
12/5Sun
multi-stopDelta
8h 11mDCA-SEA
17/5Fri
multi-stopDelta
7h 58mSEA-DCA
C$ 1,249
12/5Sun
multi-stopAlaska Airlines
11h 39mDCA-SEA
17/5Fri
multi-stopAlaska Airlines
12h 14mSEA-DCA
C$ 1,305
12/5Sun
multi-stopDelta
9h 49mDCA-SEA
16/5Thu
multi-stopDelta
6h 51mSEA-DCA
C$ 1,316
11/5Sat
multi-stopUnited Airlines
9h 53mDCA-SEA
17/5Fri
multi-stopUnited Airlines
11h 22mSEA-DCA
C$ 1,378
11/5Sat
multi-stopAlaska Airlines
11h 18mDCA-SEA
18/5Sat
multi-stopAlaska Airlines
11h 14mSEA-DCA
C$ 1,468
12/5Sun
multi-stopAlaska Airlines
15h 34mDCA-SEA
14/5Tue
multi-stopAlaska Airlines
28h 14mSEA-DCA
C$ 1,552

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Search by price

Washington, D.C. - Seattle Flights

Departure:

Washington, D.C. (undefined)United States

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Washington, D.C.

Cabin classes:

Browse origins:

  • Flights » 
  • Reagan Washington National Airport

Browse destinations:

  • Flights » 
  • Seattle