United Airlines Washington D.C. to Seattle Flights

Cheapflightsplus.com will find cheap United Airlines flights from Washington D.C. to Seattle. Compare airline ticket prices and book air tickets starting from $201 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of United Airlines, arrivals and departure details below.

Find Cheap Airfare Washington D.C. (DC) — Seattle (WA) by United 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 august: one-way - $201, two-way – $345.
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Below is a detailed 2022 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 Arrival Flight Details Flight Time Price
10:15 pm — 10:34 am
+1 day
10:15 pm — 11:46 pm UA352 United Airlines
Washington D.C. — Boston
7h 24m stop
7:10 am — 10:34 am B6597 JetBlue
Boston — Seattle
15h 19m
including layover
Find flight
from$246
12:45 pm — 5:28 pm
12:45 pm — 2:40 pm UA735 United Airlines
Washington D.C. — Denver
49m stop
3:29 pm — 5:28 pm UA948 United Airlines
Denver — Seattle
7h 43m
including layover
Find flight
from$201
7:45 pm — 6:55 am
+1 day
7:45 pm — 9:32 pm UA2305 United Airlines
Washington D.C. — Denver
43m stop
10:15 pm — 11:51 pm UA5335 United Airlines
Denver — Salt Lake City
5h 44m stop
5:35 am — 6:55 am AS3341 Alaska Airlines
Salt Lake City — Seattle
14h 10m
including layover
Find flight
from$1178
*Departure and arrival times are local. Last updated on 08/11/2022

Flight Information

There are 18 flights by United 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 10:05 pm to 7:45 pm. Nonstop flight is 7h 43m. The time difference between Washington D.C. and Seattle is 3h.

  • The fastest flight 7h 43m
  • Average flight time 13h 58m
  • The earliest flight 10:05 pm
  • The latest flight 7:45 pm
  • Distance 2321 ml

The cheapest months for traveling to Seattle are august (from 201 $).

The cheapest flight by United Airlines that our users were able to find is $201. This airfare is economy class on one-way UA735 flight for August 17, 2022 leaving Dulles International in Washington D.C. at 12:45 pm, it includes all taxes and additional fees.

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Other Popular Airlines on the Route

Besides United Airlines there are other 1 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):

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How to book an air ticket yourself?

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.
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  • 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.

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