Cheap flights from Washington, D.C. to Seattle

Washington
WAS
Seattle-Tacoma
SEA

Flight deals from Washington, D.C. to Seattle

Below you can see the best deals on flights Washington, D.C. — Seattle for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 30 September, from $128.

Top 10 cheap flights from Washington, D.C. to Seattle

F9
F9
$ 138

Washington, D.C. — Seattle

06:00—09:42
10 Sep 2026
30 h 42 m
1 stop
F9
F9
$ 138

Washington, D.C. — Seattle

06:00—18:28
11 Sep 2026
15 h 28 m
1 stop
F9
F9
$ 145

Washington, D.C. — Seattle

06:35—09:42
9 Sep 2026
30 h 7 m
1 stop
F9
F9
$ 155

Washington, D.C. — Seattle

08:59—10:39
2 Sep 2026
28 h 40 m
1 stop
F9
F9
F9
$ 155

Washington, D.C. — Seattle

16:36—09:42
9 Sep 2026
20 h 6 m
2 stops
F9
F9
$ 157

Washington, D.C. — Seattle

08:59—10:39
1 Sep 2026
28 h 40 m
1 stop
F9
F9
$ 158

Washington, D.C. — Seattle

07:00—15:08
12 Sep 2026
11 h 8 m
1 stop
F9
F9
$ 158

Washington, D.C. — Seattle

07:00—13:22
2 Sep 2026
9 h 22 m
1 stop
F9
F9
F9
$ 163

Washington, D.C. — Seattle

19:24—10:39
1 Sep 2026
18 h 15 m
2 stops
F9
F9
F9
$ 168

Washington, D.C. — Seattle

13:59—10:39
2 Sep 2026
23 h 40 m
2 stops

Prices were found in the last 72 hours and may change — check the exact price when you continue.

About the Washington, D.C. — Seattle flight

Looking for cheap flights from Washington, D.C. to Seattle? Compare fares from different airlines, check the flight schedule and travel time — and book your Washington, D.C. — Seattle ticket online at the best price.

The route has direct flights — around 286 flights per week, flights are operated by Alaska Airlines, United Airlines, Hawaiian Airlines, American Airlines and 2 more airlines, a nonstop flight takes about 5 h 45 min, the distance between the cities is around 3,745 km.

Planning your trip? You may find our Seattle travel guide, how to get from the airport into town and Seattle weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $128Min. price
SeptemberCheapest
AprilPeak season
YesDirect flights
3,745 kmDistance
5 h 45 minTravel time
6Airlines
286 / wkFlights

Flight schedule from Washington, D.C. to Seattle

The table shows direct flights from Washington, D.C. to Seattle on the selected date. The flight takes approximately 5 h 45 min. Regular flights are operated by Alaska Airlines, United Airlines, Hawaiian Airlines and American Airlines. Departures from Washington Dulles International Airport, Baltimore/Washington International Thurgood Marshall Airport and Ronald Reagan National Airport airports, arrivals at Seattle-Tacoma International Airport and Paine Field.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 14 Aug 2026

Flight ticket prices by day: Washington, D.C. — Seattle

Below is a calendar of the lowest flight ticket prices for Washington, D.C. — Seattle by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $128 in September, and the most expensive are around $228 in April. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--

Prices by month

Average one-way fares from Washington, D.C. to Seattle by month. Tickets are usually cheapest in January (around $207) and priciest in December (about $292) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$207lowMay$245mediumSep$217low
Feb$207lowJun$273highOct$217low
Mar$226mediumJul$283highNov$236medium
Apr$236mediumAug$264highDec$292high

Some values are estimated based on seasonality.

When to fly

Weather in Seattle: it is warmest in August (up to 25 °C on average) and coolest in December (around 8 °C). The driest month is July.

Tickets are usually cheapest in September and most expensive in April. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · Seattle

Dry and wet days · Seattle

Wind speed and direction · Seattle

We'll let you know if you need a visa

Enter your destination or
Your nationality
Destination

How to get the best deal on a Washington, D.C. — Seattle ticket

  • Book ahead: fares for Washington, D.C. — Seattle are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • Washington, D.C. is served by more than one airport — compare fares and travel time to each before you book.
  • The cheapest month to fly to Seattle is usually September — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the Washington, D.C. — Seattle route are operated by 6 airlines; Alaska Airlines runs the most flights (around 42% of all flights). Compare carriers, flight shares and schedules below.

  • Alaska AirlinesAS
    40x/week
    WebsiteFleet: 31545M pax/year
    • Direct flight IAD → SEA22x/week
      Duration
      5h 44m
      Days
      MTWTFSS
    • Direct flight DCA → SEA9x/week
      Duration
      5h 54m
      Days
      MTWTFSS
    • Direct flight BWI → SEA9x/week
      Duration
      5h 48m
      Days
      MTWTFSS
    42.0%Open →
  • United AirlinesUA
    17x/week
    WebsiteFleet: 956165M pax/year
    • Direct flight IAD → SEA17x/week
      Duration
      5h 46m
      Days
      MTWTFSS
    17.5%Open →
  • Hawaiian AirlinesHA
    13x/week
    WebsiteFleet: 7511M pax/year
    • Direct flight DCA → SEA13x/week
    14.0%
  • American AirlinesAA
    10x/week
    WebsiteFleet: 965211M pax/year
    • Direct flight IAD → SEA10x/week
      Duration
      5h 20m
      Days
      MTWTFSS
    10.8%Open →
  • Qatar AirwaysQR
    8x/week
    WebsiteFleet: 26640M pax/year
    • Direct flight IAD → SEA8x/week
      Duration
      5h 35m
      Days
      MTWTFSS
    8.0%Open →
  • DeltaDL
    7x/week
    WebsiteFleet: 986190M pax/year
    • Direct flight IAD → SEA5x/week
      Duration
      5h 47m
      Days
      MTWTFSS
    • Direct flight DCA → SEA3x/week
      Duration
      6h 6m
      Days
      MTWTFSS
    7.7%Open →

Cities and airports on the Washington, D.C. — Seattle route

Flights Washington, D.C. — Seattle depart from Washington Dulles International Airport, Baltimore/Washington International Thurgood Marshall Airport and Ronald Reagan National Airport and arrive at Seattle-Tacoma International Airport and Paine Field. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Washington, D.C.

WAS
United States
About the cityHow to get thereWeatherAll about the country United States
Arrival

Seattle

SEA
United States
About the cityHow to get thereWeatherAll about the country United States
Departure airports
Arrival airports

Interesting articles about Seattle

The World’s Largest CitiesInteresting

The World’s Largest Cities

If you prefer non-stop action to quiet solitude somewhere by the sea or in the mountains—this article is for you. We’ve already told you about the oldest cities in the world, and now it’s time to delv…

Did you know that some airports have beds?Interesting

Did you know that some airports have beds?

Did you know that some airports have beds? They are intended for passengers whose flights were canceled due to bad weather or other force majeure circumstances. These unfortunate travelers are offered…

Useful information

The most delicious dishes for economy class passengers.

Sometimes, even in economy, you can feel like a business class passenger. Don’t believe it? Just take a look at the dishes offered by some airlines in their economy classes. Alaska Airlines Chili bris…

Scandinavia on a budget: myth or reality?Tips for Travelers

Scandinavia on a budget: myth or reality?

Scandinavia is often perceived by tourists as a land of exorbitant prices, where a cup of coffee costs as much as a full meal, and a train ride can make a significant dent in the family budget. Howeve…

Major Megacities of Southeast AsiaWhere to go

Major Megacities of Southeast Asia

Southeast Asia is not just endless beaches and secluded bungalows. It is, first and foremost, bustling, chaotic, incredibly vibrant, and energy-breathing megacities. These are places where the aroma o…

Tips for Travelers

5 Airports with Free City Tours

Have a long layover at the airport? Don’t rush to get upset! If you are flying through one of the cities we’ll tell you about in this article, you can count on a free tour. ISTANBUL. ATATÜRK AIRPORT I…

Frequently asked questions about the Washington, D.C. — Seattle flight

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

A nonstop Washington, D.C. — Seattle flight takes about 5 h 45 min — the distance between the cities is around 3,745 km.

How far is it from Washington, D.C. to Seattle?

The distance from Washington, D.C. to Seattle is about 3,745 km, which a nonstop flight covers in around 5 h 45 min.

Are there direct flights from Washington, D.C. to Seattle?

Yes, there are nonstop flights Washington, D.C. — Seattle — around 286 flights per week.

Which airlines fly from Washington, D.C. to Seattle?

Airlines operating Washington, D.C. — Seattle include Alaska Airlines, United Airlines, Hawaiian Airlines, American Airlines, Qatar Airways. See the full list with schedules in the "Airlines" section on this page.

Which airports do Washington, D.C. — Seattle flights use?

Flights from Washington, D.C. depart from Washington Dulles International Airport, Baltimore/Washington International Thurgood Marshall Airport, Ronald Reagan National Airport, and arrive at Seattle-Tacoma International Airport, Paine Field. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Washington, D.C. to Seattle?

The price of a Washington, D.C. — Seattle ticket depends on your travel date, season and demand: it is usually cheapest to fly in September, and most expensive in April. Tickets typically cost between $128 and $228. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Washington, D.C. — Seattle?

Flights Washington, D.C. — Seattle are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is September. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Washington, D.C. to Seattle?

To catch a low fare Washington, D.C. — Seattle, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually September.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from Washington, D.C.

See all
New York CityChicagoAtlantaBostonOrlandoTorontoCharlotteHoustonDetroitMinneapolisDallasMiamiFort LauderdaleMontrealDenverRaleighLos AngelesNashvilleSan FranciscoPittsburghTampaIndianapolisBuffaloCincinnatiProvidencePhiladelphiaLondonRochesterOttawaKnoxvilleColumbusClevelandAlbanySouth PortlandNorth CharlestonSan SalvadorBurlingtonSan DiegoNorfolkSavannah

Where else you can fly from Seattle

See all
Los AngelesAnchorageVancouverSan FranciscoPhoenixSan DiegoSan JoseSpokanePortlandSanta AnaNew York CityBoiseDenverChicagoDallasSalt Lake CitySacramentoLas VegasRedmondBostonAtlantaHonoluluMinneapolisPascoAustinBurbankFairbanksEugeneJuneauNashvilleHoustonCalgaryBozemanDetroitPalm SpringsMissoulaMedfordRenoOrlandoVictoria

We use cookies and services to collect user information. This is essential for the functioning of the site and for marketing purposes. You can find out more in .