Southwest Airlines Washington D.C. to Seattle Flights

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Return flight: Seattle – Washington D.C.

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Cheapflightsplus.com will find cheap Southwest Airlines flights from Washington D.C. to Seattle. Compare airline ticket prices and book air tickets starting from $145 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of Southwest Airlines, arrivals and departure details below.

Find Cheap Airfare Washington D.C. (DC) — Seattle (WA) by Southwest 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 may: one-way - $145, two-way – $249.

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

Look at the list of plane tickets for the most connecting flights by Southwest Airlines, their prices start from $145. There’re no direct flights. The fastest connecting flight – 7h 35m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $145 Find flight	7:15 pm Washington D.C. Dulles International	11:50 pm Seattle Seattle-Tacoma Intl	7h 35m layover 0h 45m - Denver	Southwest Airlines	WN2024 WN2475
from $145 Find flight	11:35 am Washington D.C. Ronald Reagan	4:20 pm Seattle Seattle-Tacoma Intl	7h 45m layover 1h 5m - Lake Saint Louis	Southwest Airlines	WN291 WN1300
from $145 Find flight	5:30 am Washington D.C. Dulles International	10:20 am Seattle Seattle-Tacoma Intl	7h 50m layover 0h 55m - Denver	Southwest Airlines	WN900 WN2294
from $145 Find flight	6:00 am Washington D.C. Ronald Reagan	10:55 am Seattle Seattle-Tacoma Intl	7h 55m layover 1h 20m - Chicago	Southwest Airlines	WN2138 WN1590
from $145 Find flight	6:05 am Washington D.C. Ronald Reagan	11:45 am Seattle Seattle-Tacoma Intl	8h 40m layover 1h 10m - Dallas	Southwest Airlines	WN2394 WN2217
from $145 Find flight	3:00 pm Washington D.C. Ronald Reagan	9:40 pm Seattle Seattle-Tacoma Intl	9h 40m layover 3h 0m - Chicago	Southwest Airlines	WN2102 WN894

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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 04/25/2024

Southwest Airlines Flight Schedule Washington D.C. to Seattle

Below is a detailed 2024 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
11:35 am — 4:20 pm	11:35 am — 12:45 pm WN291 Southwest Airlines Washington D.C. — Lake Saint Louis 1h 5m stop 1:50 pm — 4:20 pm WN1300 Southwest Airlines Lake Saint Louis — Seattle	7h 45m including layover	Find flight from$145
3:00 pm — 9:40 pm	3:00 pm — 4:05 pm WN2102 Southwest Airlines Washington D.C. — Chicago 3h stop 7:05 pm — 9:40 pm WN894 Southwest Airlines Chicago — Seattle	9h 40m including layover	Find flight from$145
5:30 am — 10:20 am	5:30 am — 7:20 am WN900 Southwest Airlines Washington D.C. — Denver 55m stop 8:15 am — 10:20 am WN2294 Southwest Airlines Denver — Seattle	7h 50m including layover	Find flight from$145
6:00 am — 10:55 am	6:00 am — 7:00 am WN2138 Southwest Airlines Washington D.C. — Chicago 1h 20m stop 8:20 am — 10:55 am WN1590 Southwest Airlines Chicago — Seattle	7h 55m including layover	Find flight from$145
6:05 am — 11:45 am	6:05 am — 8:15 am WN2394 Southwest Airlines Washington D.C. — Dallas 1h 10m stop 9:25 am — 11:45 am WN2217 Southwest Airlines Dallas — Seattle	8h 40m including layover	Find flight from$145
7:15 pm — 11:50 pm	7:15 pm — 9:10 pm WN2024 Southwest Airlines Washington D.C. — Denver 45m stop 9:55 pm — 11:50 pm WN2475 Southwest Airlines Denver — Seattle	7h 35m including layover	Find flight from$145

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

*Departure and arrival times are local. Last updated on 04/25/2024

Flight Information

There are 7 flights by Southwest 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 11:35 am to 7:15 pm. Nonstop flight is 7h 35m. The time difference between Washington D.C. and Seattle is 3h.

The fastest flight 7h 35m
Average flight time 7h 53m
The earliest flight 11:35 am
The latest flight 7:15 pm
Distance 2321 ml

The cheapest flight by Southwest Airlines that our users were able to find is $145. This airfare is economy class on one-way WN900 flight for October 3, 2018 leaving Dulles International in Washington D.C. at 5:30 am, it includes all taxes and additional fees.

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Southwest Airlines Airplanes on the Route

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

Other Popular Airlines on the Route

Besides Southwest 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’re no direct flights on this route. Try flights with stops.

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Connecting Flights

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

B6 - JetBlue

from $166

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UA - United Airlines

from $135

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How to book an air ticket yourself?

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