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 $179 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 december: one-way - $179, two-way – $307.
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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 Arrival Flight Details Flight Time Price
5:19 pm — 8:19 pm
5:19 pm — 8:19 pm UA1730 United Airlines
Washington D.C. — Seattle
6h
Find flight
from$203
5:30 pm — 8:31 pm
5:30 pm — 8:31 pm UA326 United Airlines
Washington D.C. — Seattle
6h 1m
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from$179
10:05 am — 6:15 pm
10:05 am — 12:13 pm UA1926 United Airlines
Washington D.C. — Denver
3h 57m stop
4:10 pm — 6:15 pm UA745 United Airlines
Denver — Seattle
11h 10m
including layover
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from$238
10:11 pm — 9:58 am
+1 day
10:11 pm — 0:15 am UA507 United Airlines
Washington D.C. — Denver
7h 35m stop
7:50 am — 9:58 am UA1399 United Airlines
Denver — Seattle
14h 47m
including layover
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from$237
11:00 am — 7:20 pm
11:00 am — 1:33 pm UA1457 United Airlines
Washington D.C. — Houston
2h 47m stop
4:20 pm — 7:20 pm UA522 United Airlines
Houston — Seattle
11h 20m
including layover
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from$189
11:30 am — 6:45 pm
11:30 am — 1:07 pm UA3520 United Airlines
Washington D.C. — Chicago
2h 58m stop
4:05 pm — 6:45 pm UA2278 United Airlines
Chicago — Seattle
10h 15m
including layover
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from$331
12:35 pm — 6:52 pm
12:35 pm — 3:42 pm UA1126 United Airlines
Washington D.C. — San Francisco
50m stop
4:32 pm — 6:52 pm UA2603 United Airlines
San Francisco — Seattle
9h 17m
including layover
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from$189
12:40 pm — 7:20 pm
12:40 pm — 3:14 pm UA382 United Airlines
Washington D.C. — Houston
1h 6m stop
4:20 pm — 7:20 pm UA522 United Airlines
Houston — Seattle
9h 40m
including layover
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from$189
1:00 pm — 6:45 pm
1:00 pm — 2:21 pm UA1685 United Airlines
Washington D.C. — Chicago
1h 44m stop
4:05 pm — 6:45 pm UA2278 United Airlines
Chicago — Seattle
8h 45m
including layover
Find flight
from$288
1:00 pm — 10:46 pm
1:00 pm — 2:13 pm UA2330 United Airlines
Washington D.C. — Chicago
5h 42m stop
7:55 pm — 10:46 pm UA2850 United Airlines
Chicago — Seattle
12h 46m
including layover
Find flight
from$317
2:19 pm — 10:30 pm
2:19 pm — 5:12 pm UA773 United Airlines
Washington D.C. — Los Angeles
2h 18m stop
7:30 pm — 10:30 pm UA1875 United Airlines
Los Angeles — Seattle
11h 11m
including layover
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from$189
2:45 pm — 10:50 pm
2:45 pm — 5:18 pm UA1805 United Airlines
Washington D.C. — Houston
2h 32m stop
7:50 pm — 10:50 pm UA2456 United Airlines
Houston — Seattle
11h 5m
including layover
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from$189
3:30 pm — 10:46 pm
3:30 pm — 4:43 pm UA1888 United Airlines
Washington D.C. — Chicago
3h 12m stop
7:55 pm — 10:46 pm UA2850 United Airlines
Chicago — Seattle
10h 16m
including layover
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from$189
3:30 pm — 10:53 pm
3:30 pm — 4:48 pm UA1888 United Airlines
Washington D.C. — Chicago
3h 16m stop
8:04 pm — 10:53 pm UA2211 United Airlines
Chicago — Seattle
10h 23m
including layover
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from$189
4:10 pm — 0:50 am
+1 day
4:10 pm — 7:17 pm UA1318 United Airlines
Washington D.C. — San Francisco
3h 18m stop
10:35 pm — 0:50 am UA1971 United Airlines
San Francisco — Seattle
11h 40m
including layover
Find flight
from$189
4:13 pm — 9:05 pm
4:13 pm — 6:25 pm UA2104 United Airlines
Washington D.C. — Denver
40m stop
7:05 pm — 9:11 pm UA299 United Airlines
Denver — Seattle
7h 52m
including layover
Find flight
from$189
5:00 pm — 10:46 pm
5:00 pm — 6:13 pm UA2016 United Airlines
Washington D.C. — Chicago
1h 42m stop
7:55 pm — 10:46 pm UA2850 United Airlines
Chicago — Seattle
8h 46m
including layover
Find flight
from$189
6:00 pm — 10:46 pm
6:00 pm — 7:14 pm UA2148 United Airlines
Washington D.C. — Chicago
41m stop
7:55 pm — 10:46 pm UA2850 United Airlines
Chicago — Seattle
7h 46m
including layover
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from$189
6:30 am — 3:21 pm
6:30 am — 9:37 am UA1095 United Airlines
Washington D.C. — San Francisco
3h 26m stop
1:03 pm — 3:21 pm UA2391 United Airlines
San Francisco — Seattle
11h 51m
including layover
Find flight
from$189
7:00 am — 12:07 pm
7:00 am — 8:18 am UA231 United Airlines
Washington D.C. — Chicago
1h 2m stop
9:20 am — 12:07 pm UA2849 United Airlines
Chicago — Seattle
8h 7m
including layover
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from$189
8:25 am — 3:21 pm
8:25 am — 11:16 am UA1116 United Airlines
Washington D.C. — San Francisco
1h 45m stop
1:03 pm — 3:21 pm UA2391 United Airlines
San Francisco — Seattle
9h 56m
including layover
Find flight
from$189
8:30 am — 3:57 pm
8:30 am — 9:43 am UA2201 United Airlines
Washington D.C. — Chicago
3h 27m stop
1:10 pm — 3:57 pm UA1485 United Airlines
Chicago — Seattle
10h 27m
including layover
Find flight
from$189
9:00 am — 4:00 pm
9:00 am — 11:49 am UA2066 United Airlines
Washington D.C. — Los Angeles
1h 16m stop
1:05 pm — 4:00 pm UA2390 United Airlines
Los Angeles — Seattle
10h
including layover
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from$189
7:00 pm — 9:58 am
+1 day
7:00 pm — 8:14 pm UA1685 United Airlines
Washington D.C. — Chicago
1h 22m stop
9:36 pm — 11:19 pm UA2485 United Airlines
Chicago — Denver
8h 31m stop
7:50 am — 9:58 am UA1399 United Airlines
Denver — Seattle
17h 58m
including layover
Find flight
from$244
*Departure and arrival times are local. Last updated on 11/21/2024

Flight Information

There are 2 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 am to 9:00 am. Nonstop flight is 6h. The time difference between Washington D.C. and Seattle is 3h.

  • The fastest flight 6h
  • Average flight time 6h 1m
  • The earliest flight 10:05 am
  • The latest flight 9:00 am
  • Distance 2321 ml

The cheapest months for traveling to Seattle are january (from 179 $), february (from 180 $), december (from 189 $).

The most expensive and popular months are november (from 252 $), december (from 189 $), february (from 180 $).

The cheapest flight by United Airlines that our users were able to find is $179. This airfare is economy class on one-way UA326 flight for January 8, 2025 leaving Dulles International in Washington D.C. at 5:30 pm, it includes all taxes and additional fees.

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Other Popular Airlines on the Route

Besides United Airlines there are other 6 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:

See more direct flights

Connecting Flights

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

  • from $136
    Find
  • from $83
    Find
  • PD - Porter Airlines
    from $312
    Find
  • TK - Turkish Airlines
    from $1531
    Find
  • LX - SWISS International Air Lines
    from $6182
    Find
  • TS - Air Transat
    from $346
    Find
See more connecting flights

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.
  • 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.

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