United Airlines Denver to Seattle Flights

Return flight: Seattle – Denver

Cheapflightsplus.com will find cheap United Airlines flights from Denver to Seattle. Compare airline ticket prices and book air tickets starting from $101 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 Denver (CO) — 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 april: one-way - $101, two-way – $173.
Direct flights
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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 Arrival Flight Details Flight Time Price
11:50 am — 1:54 pm
11:50 am — 1:54 pm UA690 United Airlines
Denver — Seattle
3h 4m
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from$143
11:50 am — 1:57 pm
11:50 am — 1:57 pm UA2246 United Airlines
Denver — Seattle
3h 7m
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from$193
11:50 am — 1:57 pm
11:50 am — 1:57 pm UA423 United Airlines
Denver — Seattle
3h 7m
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from$385
11:55 am — 2:00 pm
11:55 am — 2:00 pm UA316 United Airlines
Denver — Seattle
3h 5m
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from$247
4:01 pm — 6:03 pm
4:01 pm — 6:03 pm UA745 United Airlines
Denver — Seattle
3h 2m
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from$141
4:04 pm — 6:09 pm
4:04 pm — 6:09 pm UA759 United Airlines
Denver — Seattle
3h 5m
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from$151
7:00 pm — 9:01 pm
7:00 pm — 9:01 pm UA299 United Airlines
Denver — Seattle
3h 1m
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from$140
7:45 am — 9:53 am
7:45 am — 9:53 am UA1399 United Airlines
Denver — Seattle
3h 8m
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from$101
7:46 am — 9:49 am
7:46 am — 9:49 am UA204 United Airlines
Denver — Seattle
3h 3m
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from$129
8:44 pm — 10:45 pm
8:44 pm — 10:45 pm UA2651 United Airlines
Denver — Seattle
3h 1m
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from$129
10:15 am — 3:45 pm
10:15 am — 12:04 pm UA2041 United Airlines
Denver — San Francisco
1h 21m stop
1:25 pm — 3:45 pm UA593 United Airlines
San Francisco — Seattle
6h 30m
including layover
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from$152
10:15 am — 9:20 pm
9:47 am — 11:45 am UA2041 United Airlines
Denver — San Francisco
6h 56m stop
6:52 pm — 9:09 pm UA2019 United Airlines
San Francisco — Seattle
12h 5m
including layover
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from$274
1:34 pm — 9:20 pm
1:34 pm — 3:25 pm UA304 United Airlines
Denver — San Francisco
3h 35m stop
7:00 pm — 9:20 pm UA2019 United Airlines
San Francisco — Seattle
8h 46m
including layover
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from$153
1:34 pm — 6:52 pm
1:34 pm — 3:25 pm UA304 United Airlines
Denver — San Francisco
1h 7m stop
4:32 pm — 6:52 pm UA2603 United Airlines
San Francisco — Seattle
6h 18m
including layover
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from$153
3:59 pm — 9:15 pm
3:43 pm — 5:32 pm UA1300 United Airlines
Denver — San Francisco
1h 5m stop
6:50 pm — 9:07 pm UA2019 United Airlines
San Francisco — Seattle
6h 16m
including layover
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from$151
3:59 pm — 11:50 pm
3:43 pm — 5:32 pm UA1300 United Airlines
Denver — San Francisco
3h 40m stop
9:29 pm — 11:44 pm UA1971 United Airlines
San Francisco — Seattle
8h 51m
including layover
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from$162
5:25 pm — 11:44 pm
5:25 pm — 7:14 pm UA1007 United Airlines
Denver — San Francisco
2h 15m stop
9:29 pm — 11:44 pm UA1971 United Airlines
San Francisco — Seattle
7h 19m
including layover
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from$199
5:50 pm — 0:55 am
+1 day
5:50 pm — 7:46 pm UA1007 United Airlines
Denver — San Francisco
2h 49m stop
10:35 pm — 0:55 am UA1743 United Airlines
San Francisco — Seattle
8h 5m
including layover
Find flight
from$269
6:01 am — 12:53 pm
6:01 am — 7:50 am UA281 United Airlines
Denver — San Francisco
2h 45m stop
10:35 am — 12:53 pm UA2315 United Airlines
San Francisco — Seattle
7h 52m
including layover
Find flight
from$128
6:01 am — 11:53 am
6:01 am — 7:50 am UA281 United Airlines
Denver — San Francisco
1h 42m stop
9:32 am — 11:53 am UA573 United Airlines
San Francisco — Seattle
6h 52m
including layover
Find flight
from$128
7:45 am — 3:21 pm
7:45 am — 9:32 am UA2391 United Airlines
Denver — San Francisco
3h 31m stop
1:03 pm — 3:21 pm UA2391 United Airlines
San Francisco — Seattle
8h 36m
including layover
Find flight
from$107
8:05 am — 10:30 pm
7:45 am — 9:16 am UA1638 United Airlines
Denver — Los Angeles
9h 54m stop
7:30 pm — 10:30 pm UA1657 United Airlines
Los Angeles — Seattle
15h 25m
including layover
Find flight
from$235
9:15 am — 3:25 pm
9:06 am — 10:55 am UA754 United Airlines
Denver — San Francisco
1h 59m stop
1:00 pm — 3:18 pm UA2650 United Airlines
San Francisco — Seattle
7h 10m
including layover
Find flight
from$128
9:40 am — 3:18 pm
9:40 am — 11:25 am UA510 United Airlines
Denver — San Francisco
1h 35m stop
1:00 pm — 3:18 pm UA2650 United Airlines
San Francisco — Seattle
6h 38m
including layover
Find flight
from$128
*Departure and arrival times are local. Last updated on 04/03/2025

Flight Information

There are 10 flights by United Airlines from Denver to Seattle every week with departures from Denver International and Arapahoe Co. All flights arrive at Seattle-Tacoma Intl, Boeing Field International Airport, Kenmore Air Harbor SPB.

Departures start from 10:10 am to 9:59 am. Nonstop flight is 3h 1m. The time difference between Denver and Seattle is 1h.

  • The fastest flight 3h 1m
  • Average flight time 3h 5m
  • The earliest flight 10:10 am
  • The latest flight 9:59 am
  • Distance 1022 ml

The cheapest months for traveling to Seattle are december (from 101 $), november (from 128 $), january (from 129 $).

The most expensive and popular months are february (from 131 $), january (from 129 $), november (from 128 $).

The cheapest flight by United Airlines that our users were able to find is $101. This airfare is economy class on one-way UA1399 flight for January 3, 2025 leaving Denver International in Denver at 7:45 am, it includes all taxes and additional fees.

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Other Popular Airlines on the Route

Besides United Airlines there are other 7 airline carriers between Denver and Seattle. Please review schedules and prices from the most popular airlines to find the best airfare deals from Denver to Seattle.

Nonstop flights

There are 24 direct flights every day from Denver. Airlines and fares are below:

See more direct flights

Connecting Flights

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

  • from $62
    Find
  • from $180
    Find
  • AA - American Airlines
    from $209
    Find
  • AS - Alaska Airlines
    from $115
    Find
  • SY - Sun Country Airlines
    from $295
    Find
  • Y4 - Volaris
    from $556
    Find
  • AM - Aeromexico
    from $625
    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.

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