Alaska Airlines Washington D.C. to Seattle Flights

One way Round trip

Adults

Children under 12

Infants under 2 without place

Economy

Business

First

done

Return flight: Seattle – Washington D.C.

Page navigation

Best Airfare Price Calendar Flights Schedule

Cheapflightsplus.com will find cheap Alaska Airlines flights from Washington D.C. to Seattle. Compare airline ticket prices and book air tickets starting from $151 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of Alaska Airlines, arrivals and departure details below.

Find Cheap Airfare Washington D.C. (DC) — Seattle (WA) by Alaska Airlines

To find cheap tickets choose a day of your departure with attractive price on the graph below and click «Find flights». For round trip flights please click «Check prices for return flight». The cheapest airfare is in january: one-way - $151, two-way – $259.

Direct flights

Check to choose departure date Check to choose departure date

Check prices for return flight

Find flights

Cheap Flights from Washington D.C. to Seattle by Alaska Airlines

Look at the list of plane tickets for the most popular direct and connecting flights by Alaska Airlines, their prices start from $151. The fastest nonstop flight takes 5h 55m. The fastest connecting flight — 12h 55m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $151 Find flight	7:00 am Washington D.C. Dulles International	9:56 am Seattle Seattle-Tacoma Intl	5h 56m	Alaska Airlines	AS308
from $238 Find flight	8:00 am Washington D.C. Ronald Reagan	10:58 am Seattle Seattle-Tacoma Intl	5h 58m	Alaska Airlines	AS1
from $238 Find flight	5:39 pm Washington D.C. Ronald Reagan	8:34 pm Seattle Seattle-Tacoma Intl	5h 55m	Alaska Airlines	AS3
from $195 Find flight	6:55 pm Washington D.C. Ronald Reagan	7:08 am+1 день Seattle Seattle-Tacoma Intl	15h 13m layover 8h 9m - Portland	Alaska Airlines	AS9 AS124
from $208 Find flight	9:00 am Washington D.C. Ronald Reagan	6:55 pm Seattle Seattle-Tacoma Intl	12h 55m layover 3h 57m - Los Angeles	Alaska Airlines	AS5 AS1047
from $222 Find flight	9:00 am Washington D.C. Ronald Reagan	6:55 pm Seattle Seattle-Tacoma Intl	12h 55m layover 3h 57m - Los Angeles	Alaska Airlines	AS5 AS1371
from $246 Find flight	5:18 pm Washington D.C. Dulles International	9:23 am+1 день Seattle Seattle-Tacoma Intl	19h 5m layover 9h 56m - San Diego	Alaska Airlines	AS507 AS1245

Show All Flights

*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 12/22/2024

Alaska Airlines Flight Schedule Washington D.C. to Seattle

Below is a detailed 2025 flight schedule for today, tomorrow and all other days. It may vary depending on season and a day of the week of your desired trip. We recommend booking your itinerary at least 2 weeks prior your travel to get the best price and availability by the airline.

Departure	Flight Details	Flight Time	Price
5:18 pm — 9:23 am +1 day	5:10 pm — 7:47 pm AS507 Alaska Airlines Washington D.C. — San Diego 9h 56m stop 6:15 am — 9:24 am AS1245 Alaska Airlines San Diego — Seattle	19h 5m including layover	Find flight from$246
5:39 pm — 8:34 pm	5:39 pm — 8:34 pm AS3 Alaska Airlines Washington D.C. — Seattle	5h 55m	Find flight from$238
6:40 pm — 12:41 pm +1 day	6:40 pm — 9:45 pm AS9 Alaska Airlines Washington D.C. — Portland 13h 55m stop 11:40 am — 12:41 pm AS970 Alaska Airlines Portland — Seattle	21h 1m including layover	Find flight from$280
6:40 pm — 10:37 am +1 day	6:40 pm — 9:45 pm AS9 Alaska Airlines Washington D.C. — Portland 11h 55m stop 9:40 am — 10:37 am AS3362 Alaska Airlines Portland — Seattle	18h 57m including layover	Find flight from$290
6:55 pm — 7:08 am +1 day	6:55 pm — 9:56 pm AS9 Alaska Airlines Washington D.C. — Portland 8h 9m stop 6:05 am — 7:08 am AS124 Alaska Airlines Portland — Seattle	15h 13m including layover	Find flight from$195
7:00 am — 9:56 am	7:00 am — 9:56 am AS308 Alaska Airlines Washington D.C. — Seattle	5h 56m	Find flight from$151
8:00 am — 10:58 am	8:00 am — 10:58 am AS1 Alaska Airlines Washington D.C. — Seattle	5h 58m	Find flight from$238
9:00 am — 6:55 pm	9:00 am — 12:03 pm AS5 Alaska Airlines Washington D.C. — Los Angeles 3h 57m stop 4:00 pm — 6:55 pm AS1047 Alaska Airlines Los Angeles — Seattle	12h 55m including layover	Find flight from$208
9:00 am — 6:55 pm	9:00 am — 12:03 pm AS5 Alaska Airlines Washington D.C. — Los Angeles 3h 57m stop 4:00 pm — 6:55 pm AS1371 Alaska Airlines Los Angeles — Seattle	12h 55m including layover	Find flight from$222

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times are local. Last updated on 12/22/2024

Flight Information

There are 3 flights by Alaska Airlines from Washington D.C. to Seattle every week with departures from Ronald Reagan and Dulles International. All flights arrive at Seattle-Tacoma Intl, Boeing Field International Airport, Kenmore Air Harbor SPB.

Departures start from 5:18 pm to 9:00 am. Nonstop flight is 5h 55m. The time difference between Washington D.C. and Seattle is 3h.

The fastest flight 5h 55m
Average flight time 5h 56m
The earliest flight 5:18 pm
The latest flight 9:00 am
Distance 2321 ml

The cheapest months for traveling to Seattle are february (from 151 $), january (from 195 $), december (from 238 $).

The most expensive and popular months are november (from 287 $), december (from 238 $), january (from 195 $).

The cheapest flight by Alaska Airlines that our users were able to find is $151. This airfare is economy class on one-way AS308 flight for February 21, 2025 leaving Dulles International in Washington D.C. at 7:00 am, it includes all taxes and additional fees.

Find same flight?

Alaska Airlines Airplanes on the Route

List of the most popular Alaska Airlines airplanes flying from Washington D.C. to Seattle:

Other Popular Airlines on the Route

Besides Alaska Airlines there are other 2 airline carriers between Washington D.C. and Seattle. Please review schedules and prices from the most popular airlines to find the best airfare deals from Washington D.C. to Seattle.

Nonstop flights

There are 5 direct flights every day from Washington D.C.. Airlines and fares are below:

UA - United Airlines

from $180

Find

See more direct flights

Connecting Flights

List of flights with layovers (1 and more stops):

UA - United Airlines

from $191

Find
TK - Turkish Airlines

from $2021

Find

See more connecting flights

How to book an air ticket yourself?

Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
Click «Buy» when you are ready — our system will redirect you to the site that sells the selected airfare.
Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.
To find a plane ticket, please select dates.