Latest deals
Insights
FAQs
Reviews

Cheap flights from Washington, D.C. to Seattle from $82

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Seattle departing on 8/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
From?
To?
dom 6/23
dom 6/30

Deals available from 900+ travel sites.

"This year, momondo is the #1 place for airfares on the internet."
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.
Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.
Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.
Price Alerts
Price Alerts
Not ready to book? Create a price alert to track prices.

Easily compare round-trip flights from Washington, D.C. to Seattle

Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Washington, D.C. to Seattle by changing tabs
Frontier
Jul 9
BWI8:54 pmBaltimore/Washington
13h 06m
1 stop
SEA7:00 amSeattle/Tacoma Intl
Jul 10
SEA9:40 pmSeattle/Tacoma Intl
11h 56m
1 stop
BWI12:36 pmBaltimore/Washington
American Airlines
Aug 21
BWI7:33 pmBaltimore/Washington
8h 16m
1 stop
SEA12:49 amSeattle/Tacoma Intl
Oct 9
SEA10:32 pmSeattle/Tacoma Intl
7h 00m
1 stop
BWI8:32 amBaltimore/Washington
Multiple Airlines
Aug 21
BWI1:03 pmBaltimore/Washington
11h 08m
1 stop
SEA9:11 pmSeattle/Tacoma Intl
Aug 28
SEA5:30 amSeattle/Tacoma Intl
10h 41m
1 stop
BWI7:11 pmBaltimore/Washington
Spirit Airlines
Aug 22
BWI7:30 amBaltimore/Washington
18h 01m
1 stop
SEA10:31 pmSeattle/Tacoma Intl
Aug 27
SEA5:30 amSeattle/Tacoma Intl
10h 41m
1 stop
BWI7:11 pmBaltimore/Washington
JetBlue
Sep 24
DCA1:30 pmWashington, D.C. Reagan-National
10h 36m
1 stop
SEA9:06 pmSeattle/Tacoma Intl
Oct 1
SEA10:16 pmSeattle/Tacoma Intl
8h 28m
1 stop
DCA9:44 amWashington, D.C. Reagan-National
Delta
Sep 24
BWI5:40 pmBaltimore/Washington
7h 45m
1 stop
SEA10:25 pmSeattle/Tacoma Intl
Sep 28
SEA7:15 pmSeattle/Tacoma Intl
7h 35m
1 stop
BWI5:50 amBaltimore/Washington

Find the cheapest one-way flights from Washington, D.C. to Seattle

If you're looking for one-way flights from Washington, D.C. to Seattle, view some of our deals below provided by Alaska Airlines, American Airlines and Delta
Frontier
Aug 6
BWI8:54 pmBaltimore/Washington
13h 06m
1 stop
SEA7:00 amSeattle/Tacoma Intl
Alaska Airlines
Sep 13
IAD7:09 pmWashington, D.C. Dulles Intl
5h 51m
SEA10:00 pmSeattle/Tacoma Intl
American Airlines
Aug 13
BWI5:35 pmBaltimore/Washington
8h 31m
1 stop
SEA11:06 pmSeattle/Tacoma Intl

Find the cheapest direct flights from Washington, D.C. to Seattle

Delta
Sep 21
IAD7:30 amWashington, D.C. Dulles Intl
5h 59m
SEA10:29 amSeattle/Tacoma Intl
Sep 25
SEA8:55 amSeattle/Tacoma Intl
5h 05m
IAD5:00 pmWashington, D.C. Dulles Intl
Alaska Airlines
Aug 27
BWI6:59 pmBaltimore/Washington
5h 41m
SEA9:40 pmSeattle/Tacoma Intl
Sep 3
SEA9:37 pmSeattle/Tacoma Intl
5h 00m
BWI5:37 amBaltimore/Washington
United Airlines
Jul 11
IAD10:10 pmWashington, D.C. Dulles Intl
5h 44m
SEA12:54 amSeattle/Tacoma Intl
Jul 24
SEA11:20 pmSeattle/Tacoma Intl
4h 59m
IAD7:19 amWashington, D.C. Dulles Intl
Undisclosed Carrier
Sep 6
IAD7:09 pmWashington, D.C. Dulles Intl
5h 51m
SEA10:00 pmSeattle/Tacoma Intl
Sep 8
SEA7:07 amSeattle/Tacoma Intl
5h 08m
IAD3:15 pmWashington, D.C. Dulles Intl
Delta
Sep 17
IAD5:55 pmWashington, D.C. Dulles Intl
5h 45m
SEA8:40 pmSeattle/Tacoma Intl
Sep 19
SEA8:55 amSeattle/Tacoma Intl
5h 05m
IAD5:00 pmWashington, D.C. Dulles Intl
Alaska Airlines
Aug 31
BWI7:08 amBaltimore/Washington
5h 43m
SEA9:51 amSeattle/Tacoma Intl
Sep 3
SEA9:37 pmSeattle/Tacoma Intl
5h 00m
BWI5:37 amBaltimore/Washington

Search last-minute flights to Seattle from Washington, D.C.

Find and compare round-trip flight prices for your last-minute flight from Washington, D.C. to Seattle
Spirit Airlines
Jun 25
BWI9:38 pmBaltimore/Washington
13h 54m
1 stop
SEA8:32 amSeattle/Tacoma Intl
Jun 30
SEA8:59 pmSeattle/Tacoma Intl
13h 26m
1 stop
BWI1:25 pmBaltimore/Washington
Multiple Airlines
Jun 27
BWI9:28 pmBaltimore/Washington
14h 04m
1 stop
SEA8:32 amSeattle/Tacoma Intl
Jul 10
SEA9:40 pmSeattle/Tacoma Intl
11h 56m
1 stop
BWI12:36 pmBaltimore/Washington
Frontier
Jun 23
DCA7:00 amWashington, D.C. Reagan-National
27h 06m
1 stop
SEA7:06 amSeattle/Tacoma Intl
Jul 2
SEA9:41 amSeattle/Tacoma Intl
9h 16m
1 stop
DCA9:57 pmWashington, D.C. Reagan-National
Sun Country Air
Jul 1
IAD10:37 amWashington, D.C. Dulles Intl
15h 17m
1 stop
SEA10:54 pmSeattle/Tacoma Intl
Jul 31
SEA11:59 pmSeattle/Tacoma Intl
10h 36m
1 stop
IAD1:35 pmWashington, D.C. Dulles Intl
Delta
Jun 24
BWI6:33 pmBaltimore/Washington
8h 22m
1 stop
SEA11:55 pmSeattle/Tacoma Intl
Jul 9
SEA12:35 amSeattle/Tacoma Intl
6h 55m
1 stop
BWI10:30 amBaltimore/Washington
Alaska Airlines
Jul 1
IAD5:43 pmWashington, D.C. Dulles Intl
9h 57m
1 stop
SEA12:40 amSeattle/Tacoma Intl
Jul 10
SEA11:43 pmSeattle/Tacoma Intl
4h 52m
IAD7:35 amWashington, D.C. Dulles Intl

Spirit Airlines flights from Washington, D.C. to Seattle

Our best Spirit Airlines deals on Washington, D.C. to Seattle flight tickets
Spirit Airlines
Aug 22
BWI7:30 amBaltimore/Washington
18h 01m
1 stop
SEA10:31 pmSeattle/Tacoma Intl
Aug 27
SEA5:30 amSeattle/Tacoma Intl
10h 41m
1 stop
BWI7:11 pmBaltimore/Washington
Spirit Airlines
Aug 23
BWI8:03 amBaltimore/Washington
13h 12m
1 stop
SEA6:15 pmSeattle/Tacoma Intl
Aug 26
SEA5:30 amSeattle/Tacoma Intl
23h 43m
1 stop
BWI8:13 amBaltimore/Washington
Spirit Airlines
Sep 3
BWI9:34 pmBaltimore/Washington
13h 40m
1 stop
SEA8:14 amSeattle/Tacoma Intl
Sep 11
SEA9:14 amSeattle/Tacoma Intl
8h 48m
1 stop
BWI9:02 pmBaltimore/Washington

Alaska Airlines flights from Washington, D.C. to Seattle

Our best Alaska Airlines deals on Washington, D.C. to Seattle flight tickets
Alaska Airlines
Aug 21
BWI7:08 amBaltimore/Washington
5h 43m
SEA9:51 amSeattle/Tacoma Intl
Aug 27
SEA9:37 pmSeattle/Tacoma Intl
5h 00m
BWI5:37 amBaltimore/Washington
Alaska Airlines
Aug 22
IAD7:00 amWashington, D.C. Dulles Intl
5h 39m
SEA9:39 amSeattle/Tacoma Intl
Sep 1
SEA7:05 amSeattle/Tacoma Intl
5h 08m
IAD3:13 pmWashington, D.C. Dulles Intl
Alaska Airlines
Aug 19
IAD5:43 pmWashington, D.C. Dulles Intl
9h 16m
1 stop
SEA11:59 pmSeattle/Tacoma Intl
Aug 27
SEA7:07 amSeattle/Tacoma Intl
5h 08m
IAD3:15 pmWashington, D.C. Dulles Intl

How to get the cheapest flight ticket from Washington, D.C. to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from Washington, D.C. to Seattle?

January. The cheapest time of year to fly to Seattle from Washington, D.C. is January. Most expensive is June

What is the cheapest day to depart Washington, D.C. for Seattle?

Tuesday. The cheapest day of the week is typically Tuesday. The most expensive is typically Sunday

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

At noon. Washington, D.C. to Seattle flights are approximately 25% more expensive in the morning than at noon

What is the cheapest airline that flies to Seattle from Washington, D.C.?

Frontier. Delta, Frontier, and JetBlue are the most popular carriers operating from Washington, D.C. to Seattle

What is the cheapest Washington, D.C. to Seattle flight route?

Washington, D.C. Reagan-National - Seattle/Tacoma Intl. Fly from Washington, D.C. Reagan-National to Seattle/Tacoma Intl for the best Washington, D.C. - Seattle flight prices

How far in advance should you book Washington, D.C. to Seattle flights?

41 days before. The cheapest time to buy a flight from Washington, D.C. to Seattle is approximately 41 days to departure

How many flights depart from Washington, D.C. to Seattle on average per day?

As of June 2024, 19 flights take off from Washington, D.C. and land in Seattle each day. The most common flight departure time for this route is 4:00PM, with 58% of daily flights taking off in the afternoon.

How many flights depart from Washington, D.C. to Seattle on average per week?

As of June 2024, there are 135 flights per week flying from Washington, D.C. to Seattle. The most common day of the week flights depart is Friday, with 16% of flights taking off on this day.

What cabin class options are available on Washington, D.C. to Seattle flights?

There are 4 cabin classes available to choose from on Washington, D.C. to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. to Seattle flights?

You could potentially save up to 42% on your flight if you consider stops on a Washington, D.C. to Seattle flight.

Cheap Washington, D.C. to Seattle (WAS to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Seattle

Best Price Found

$82

Fastest flight time

5h 39m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Washington, D.C. in the past 72 hours is $82. The best round-trip flight deal from Washington, D.C. to Seattle found on momondo in the last 72 hours is $158.
The fastest flight from Washington, D.C. to Seattle takes 5h 39m
Direct flights go from Washington, D.C. to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • How far is Washington, D.C. to Seattle/Tacoma Intl by plane?

    The straight-line distance from Washington, D.C. to Seattle/Tacoma Intl is 2320.5 mi. 5h 39m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Washington, D.C. to Seattle/Tacoma Intl Airport?

    Prices for flights from Washington, D.C. to Seattle/Tacoma Intl Airport were last updated today.

  • How many operators does momondo search for flights from Washington, D.C. to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Washington, D.C. to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.


Best airlines flying from Washington, D.C. to Seattle

Compare and see reviews for airlines that fly from Washington, D.C. to Seattle with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $103Free CancellationRating
6.2
3,939 reviews
Search Frontier flights
JetBluePriceFrom $119Free CancellationRating
7.6
4,227 reviews
Search JetBlue flights
DeltaPriceFrom $139Free CancellationRating
8.0
10,000 reviews
Search Delta flights
Sun Country AirPriceFrom $140Free CancellationRating
7.1
572 reviews
Search Sun Country Air flights
Alaska AirlinesPriceFrom $144Free CancellationRating
8.0
9,277 reviews
Search Alaska Airlines flights
Spirit AirlinesPriceFrom $166Free CancellationRating
6.4
8,522 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $171Free CancellationRating
7.4
10,000 reviews
Search United Airlines flights
American AirlinesPriceFrom $224Free CancellationRating
7.3
10,000 reviews
Search American Airlines flights
  • Delta Flights From Washington, D.C. to Seattle

    Delta flies from Washington, D.C. to Seattle around 5 times per week, with 10,000 momondo users rating the airline 8.0/10. The cheapest Delta deal from Washington, D.C. to Seattle in the last 72 hours was $139 (round-trip), much lower than the average airfare cost of $429 for Delta flights on this route.

  • Alaska Airlines Flights From Washington, D.C. to Seattle

    Across 9,277 Alaska Airlines reviews on momondo, the average score is 8.0/10. Alaska Airlines flies from Washington, D.C. to Seattle about 19 times each week, with ticket deals ranging from $144 to $478. Price data is based on momondo searches in the last 72 hours.


Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Seattle?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Seattle for you.

Can I find flights from Washington, D.C. to Seattle with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington, D.C. to Seattle flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Seattle?

momondo provides multiple filters to help you find the best flight to Seattle from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington, D.C. to Seattle right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Washington, D.C. and alert you when they change.


An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
dom 6/23
dom 6/30
Email me momondo's favorite deals

Find better results for your trip to the United States