DCA - SEA

C$ 179 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 27/5. 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.
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KAYAK searches 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
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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.

Recent round-trip flight deals from Washington, D.C. to Seattle

KAYAK's recommended round-trip deals from the most popular airlines that fly from Washington, D.C. to Seattle.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Delta Logo
4:59 p.m. - 7:50 p.m.DCA-SEA
5h 51mdirect
Delta Logo
7:20 a.m. - 3:30 p.m.SEA-DCA
5h 10mdirect
C$ 356Delta
Find Deal
sáb., 7 jun. - mié., 11 jun.
Alaska Airlines Logo
5:00 p.m. - 7:56 p.m.DCA-SEA
5h 56mdirect
Alaska Airlines Logo
8:25 a.m. - 9:05 p.m.SEA-DCA
9h 40m1 stop
C$ 370Alaska Airlines
Find Deal
mié., 4 jun. - mar., 10 jun.
Delta Logo
4:59 p.m. - 7:50 p.m.DCA-SEA
5h 51mdirect
Delta Logo
7:35 a.m. - 3:49 p.m.SEA-DCA
5h 14mdirect
C$ 377Delta
Find Deal
mié., 14 may. - jue., 22 may.
JetBlue Logo
3:00 p.m. - 10:10 p.m.DCA-SEA
10h 10m1 stop
JetBlue Logo
9:50 p.m. - 10:38 a.m.SEA-DCA
9h 48m1 stop
C$ 400JetBlue
Find Deal
lun., 4 ago. - mié., 13 ago.
JetBlue Logo
12:40 p.m. - 10:10 p.m.DCA-SEA
12h 30m1 stop
JetBlue Logo
9:50 p.m. - 10:38 a.m.SEA-DCA
9h 48m1 stop
C$ 458JetBlue
Find Deal
lun., 11 ago. - lun., 18 ago.
United Airlines Logo
6:00 a.m. - 12:46 p.m.DCA-SEA
9h 46m1 stop
United Airlines Logo
5:07 a.m. - 3:06 p.m.SEA-DCA
6h 59m1 stop
C$ 487United Airlines
Find Deal
mar., 19 ago. - jue., 21 ago.
United Airlines Logo
6:00 p.m. - 10:42 p.m.DCA-SEA
7h 42m1 stop
United Airlines Logo
10:46 p.m. - 9:22 a.m.SEA-DCA
7h 36m1 stop
C$ 494United Airlines
Find Deal
mar., 24 jun. - sáb., 28 jun.
Southwest Logo
9:00 a.m. - 4:50 p.m.DCA-SEA
10h 50m2 stops
Southwest Logo
10:45 p.m. - 12:00 p.m.SEA-DCA
10h 15m1 stop
C$ 501Southwest
Find Deal
mié., 20 ago. - mar., 26 ago.
Southwest Logo
3:15 p.m. - 12:15 a.m.DCA-SEA
12h 00m2 stops
Southwest Logo
10:55 p.m. - 10:15 a.m.SEA-DCA
8h 20m1 stop
C$ 525Southwest
Find Deal
mar., 10 jun. - vie., 13 jun.
Hawaiian Airlines Logo
8:00 a.m. - 10:40 a.m.DCA-SEA
5h 40mdirect
Hawaiian Airlines Logo
1:48 p.m. - 9:59 p.m.SEA-DCA
5h 11mdirect
C$ 655Hawaiian Airlines
Find Deal
mar., 6 may. - mar., 3 jun.

Expert advice for your flight from Washington, D.C. to Seattle

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are specific to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
DCA

DCA's metro line offers a quick, traffic-free ride from downtown to the terminal in under 30 minutes, ideal for business travelers.

Read more about DCAby Ramsey Qubein
SEA

Use the Link light rail for a cost-effective 40-minute trip from SEA to downtown Seattle, avoiding high ride-hailing fares.

Read more about SEAby Harriet Baskas
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on DCA

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Harriet Baskas

Harriet Baskas

Expert on SEA

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

KAYAK's insights & trends for Washington, D.C. to Seattle flights

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 round-trip 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$ 584 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is C$ 770 and C$ 759 respectively.

Can I save money by flying with a layover from Washington, D.C. Reagan-National Airport to Seattle?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.
No, with an average price for the route of C$ 198, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip 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 week.
To get a below average price on the flight from Washington, D.C. Reagan-National Airport to Seattle, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low season

February

High season

August

Cheapest flight

C$ 179
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly and prices are also 2% lower 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.

Flights from Washington, D.C. to Seattle: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Washington, D.C. to Seattle 
PaulFlew with Alaska AirlinesDCA-SEAOct 2024
DCA is much better than IAD. I am very happy with non-stop schedules for Alaska Air. Wish there were more flights in and out of DCA vs. IAD though.
PaulFlew with Alaska AirlinesDCA-SEAJun 2024
It's pricier to fly into Reagan (DCA), but if your destination is core DC area, it is well worth it. I used Ubers and Metro; no need to rent a car.
Verified travelerFlew with Alaska AirlinesDCA-SEAJul 2024
Alaska Air surprised me with the overall experience. I will use them again.
Verified travelerFlew with Alaska AirlinesDCA-SEAJul 2024
Be prepared Seattle is a mess as far as the overwhelming crowds when you land . The bus line to get your rental car is unbelievably long almost 100 people so be prepared once you arrive .

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$ 129 for a one-way ticket and C$ 257 for a round-trip.

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

    Alaska Airlines, Hawaiian 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

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Reagan-National Airport 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 direct from Washington, D.C. to Seattle?

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

Direct departures

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

Monday

Air Tahiti Nui,Alaska Airlines,Delta, +4 more

Air Tahiti Nui,Alaska Airlines, +5 more

Tuesday

Air Tahiti Nui,Alaska Airlines,Delta, +3 more

Air Tahiti Nui,Alaska Airlines, +4 more

Wednesday

Air Tahiti Nui,Alaska Airlines,Delta, +4 more

Air Tahiti Nui,Alaska Airlines, +5 more

Thursday

Air Tahiti Nui,Alaska Airlines,Delta, +4 more

Air Tahiti Nui,Alaska Airlines, +5 more

Friday

Air Tahiti Nui,Alaska Airlines,Delta, +3 more

Air Tahiti Nui,Alaska Airlines, +4 more

Saturday

Air Tahiti Nui,Alaska Airlines,Delta, +4 more

Air Tahiti Nui,Alaska Airlines, +5 more

Sunday

Air Tahiti Nui,Alaska Airlines,Delta, +4 more

Air Tahiti Nui,Alaska Airlines, +5 more

See more nonstop flights

Direct returns

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

Monday

Air Tahiti Nui,Alaska Airlines,Delta, +3 more

Air Tahiti Nui,Alaska Airlines, +4 more

Tuesday

Air Tahiti Nui,Alaska Airlines,Delta, +3 more

Air Tahiti Nui,Alaska Airlines, +4 more

Wednesday

Air Tahiti Nui,Alaska Airlines,Delta, +3 more

Air Tahiti Nui,Alaska Airlines, +4 more

Thursday

Air Tahiti Nui,Alaska Airlines,Delta, +3 more

Air Tahiti Nui,Alaska Airlines, +4 more

Friday

Air Tahiti Nui,Alaska Airlines,Delta, +3 more

Air Tahiti Nui,Alaska Airlines, +4 more

Saturday

Air Tahiti Nui,Alaska Airlines,Delta, +3 more

Air Tahiti Nui,Alaska Airlines, +4 more

Sunday

Air Tahiti Nui,Alaska Airlines,Delta, +3 more

Air Tahiti Nui,Alaska Airlines, +4 more

See more nonstop flights
See more nonstop flights

Everything you need to know for your flight from Washington, D.C. to Seattle

Information on your arrival and departure airports

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