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Flights from Washington D.C. to Seattle

Find cheap airlines flights from Washington D.C. to Seattle

Choose from 1 carriers that fly from Washington D.C. to Seattle, including Alaska Airlines, Enjoy the cheapest tickets on this route with Hawaiian Airlines.
Alaska Airlines logo Alaska Airlines

Cheap flight deals from Washington D.C. to Seattle

Non stop flight deals! Book direct flights from Washington D.C. to Seattle: One way flights from $126, round trip flights from $250. Cheapest next 3 months.

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Flight Info | Washington D.C. to Seattle

The distance between Washington D.C. and Seattle is about 3,736.07 km. It takes around 6 hours 5 minutes on average to fly from Washington D.C. to Seattle. The most popular month to Seattle is March. The off-season for travel is April.

Cheapest one-way flight price $99
Cheapest return ticket price $184
Off-season for travel April
Peak season for travel March
Flight distance 3,736.07 km
Average flight time 6 hours 5 minutes
Popular airline Alaska Airlines

When is the cheapest time to fly from Washington D.C. to Seattle?

The cheapest time for Washington D.C. to Seattle flights: Aug 24 to Aug 31 — one way flight prices from $99.

Cheapest flights
From price
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  • 13 20
  • 20 27

  • Aug

    27 3
  • 3 10
  • 10 17
  • 17 24
  • 24 31

  • Sep

    31 7
  • 7 14
  • 14 21
  • 21 28

  • Oct

    28 5
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

How to find a cheap flight from Washington D.C. to Seattle

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Washington D.C. to Seattle. Book your flights at the right time and save more.
1
Being flexible with your dates to get the cheapest Washington D.C. to Seattle ticket.
Tap "Date" on flight search bar to scan through the calender for Washington D.C. to Seattle airfare over next 6 months in 2025. If you would like to fly in next 3 months, it seems the cheapest date is on Wed, Aug 20 at $126 for one-way flights.
2
Compare cheap Washington D.C. to Seattle flight deals from over hundreds of airlines.
Our extensive search allows you to compare prices from over 500 airlines to choose the cheapest flight tickets from Washington D.C. to Seattle. The cheapest airline operating is Hawaiian Airlines.
3
Set up a Price Alert
By setting up a Price Alert for your Washington D.C. to Seattle route, you can easily track the price of your airline tickets from without manually checking every day.
4
Don't miss cheap Washington D.C. to Seattle flight deals and promo codes.
You can always get the latest deals through Trip.com Deals and Promo Codes for cheap flights. If registering a free membership, you can receive more deals for your flights.
5
Book early or wait unitl the last minute.
It's always better to book early. Flight tickets tend to be the cheapest when they are first released, normally about a year before the departure date. So, check online as soon as the flights you want become available. If you miss the cheapest time, you can still find lower-priced tickets as the flight date approaches.
6
Search for flights on the go.
To get the best flight booking experience on the go, download Trip.com and search for cheap flight tickets from Washington D.C. to Seattle to get exclusive deals for you.

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