United Airlines Seattle to Denver Flights

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Cheapflightsplus.com will find cheap United Airlines flights from Seattle to Denver. Compare airline ticket prices and book air tickets starting from $110 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 Seattle (WA) — Denver (CO) 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 may: one-way - $110, two-way – $189.

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Cheap Flights from Seattle to Denver by United Airlines

Look at the list of plane tickets for the most popular direct and connecting flights by United Airlines, their prices start from $110. The fastest nonstop flight takes 2h 42m. The fastest connecting flight — 5h 31m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $110 Find flight	5:02 am Seattle Seattle-Tacoma Intl	8:44 am Denver Denver International	2h 42m	United Airlines	UA2269
from $127 Find flight	9:00 am Seattle Seattle-Tacoma Intl	12:43 pm Denver Denver International	2h 43m	United Airlines	UA1829
from $127 Find flight	3:20 pm Seattle Seattle-Tacoma Intl	7:04 pm Denver Denver International	2h 44m	United Airlines	UA1476
from $153 Find flight	12:35 pm Seattle Seattle-Tacoma Intl	4:17 pm Denver Denver International	2h 42m	United Airlines	UA1483
from $207 Find flight	12:30 pm Seattle Seattle-Tacoma Intl	4:14 pm Denver Denver International	2h 44m	United Airlines	UA431
from $279 Find flight	12:46 pm Seattle Seattle-Tacoma Intl	4:31 pm Denver Denver International	2h 45m	United Airlines	UA423
from $139 Find flight	8:44 am Seattle Seattle-Tacoma Intl	6:05 pm Denver Denver International	8h 21m layover 3h 24m - San Francisco	United Airlines	UA1777 UA618
from $139 Find flight	1:55 pm Seattle Seattle-Tacoma Intl	11:06 pm Denver Denver International	8h 11m layover 3h 17m - San Francisco	United Airlines	UA1152 UA589
from $139 Find flight	12:55 pm Seattle Seattle-Tacoma Intl	7:40 pm Denver Denver International	5h 45m layover 0h 48m - San Francisco	United Airlines	UA737 UA566
from $139 Find flight	5:36 am Seattle Seattle-Tacoma Intl	2:40 pm Denver Denver International	8h 4m layover 3h 10m - San Francisco	United Airlines	UA1954 UA1986
from $139 Find flight	1:55 pm Seattle Seattle-Tacoma Intl	10:17 pm Denver Denver International	7h 22m layover 2h 28m - San Francisco	United Airlines	UA1152 UA373
from $139 Find flight	12:55 pm Seattle Seattle-Tacoma Intl	10:17 pm Denver Denver International	8h 22m layover 3h 28m - San Francisco	United Airlines	UA737 UA373
from $139 Find flight	9:41 am Seattle Seattle-Tacoma Intl	6:05 pm Denver Denver International	7h 24m layover 2h 30m - San Francisco	United Airlines	UA1102 UA618
from $139 Find flight	9:41 am Seattle Seattle-Tacoma Intl	4:40 pm Denver Denver International	5h 59m layover 1h 5m - San Francisco	United Airlines	UA1102 UA1417
from $165 Find flight	2:00 pm Seattle Seattle-Tacoma Intl	10:47 pm Denver Denver International	7h 47m layover 2h 53m - San Francisco	United Airlines	UA375 UA589
from $224 Find flight	7:05 am Seattle Seattle-Tacoma Intl	2:30 pm Denver Denver International	6h 25m layover 1h 19m - San Francisco	United Airlines	UA1403 UA1986

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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 04/24/2025

United Airlines Flight Schedule Seattle to Denver

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
12:30 pm — 4:14 pm	12:30 pm — 4:14 pm UA431 United Airlines Seattle — Denver	2h 44m	Find flight from$207
12:35 pm — 4:17 pm	12:35 pm — 4:17 pm UA1483 United Airlines Seattle — Denver	2h 42m	Find flight from$153
12:46 pm — 4:31 pm	12:46 pm — 4:31 pm UA423 United Airlines Seattle — Denver	2h 45m	Find flight from$279
3:18 pm — 7:00 pm	3:18 pm — 7:00 pm UA757 United Airlines Seattle — Denver	2h 42m	Find flight from$153
3:20 pm — 7:04 pm	3:20 pm — 7:04 pm UA1476 United Airlines Seattle — Denver	2h 44m	Find flight from$127
5:02 am — 8:44 am	5:02 am — 8:44 am UA2269 United Airlines Seattle — Denver	2h 42m	Find flight from$110
6:00 pm — 9:44 pm	6:00 pm — 9:44 pm UA1279 United Airlines Seattle — Denver	2h 44m	Find flight from$141
7:11 pm — 10:55 pm	7:11 pm — 10:55 pm UA297 United Airlines Seattle — Denver	2h 44m	Find flight from$165
7:13 pm — 10:57 pm	7:13 pm — 10:57 pm UA1387 United Airlines Seattle — Denver	2h 44m	Find flight from$168
9:00 am — 12:43 pm	9:00 am — 12:43 pm UA1829 United Airlines Seattle — Denver	2h 43m	Find flight from$127
10:55 am — 9:29 pm	10:55 am — 4:59 pm UA747 United Airlines Seattle — Chicago 2h 41m stop 7:40 pm — 9:29 pm UA2485 United Airlines Chicago — Denver	9h 34m including layover	Find flight from$698
10:55 am — 8:09 pm	10:55 am — 4:59 pm UA747 United Airlines Seattle — Chicago 1h 16m stop 6:15 pm — 8:09 pm UA1958 United Airlines Chicago — Denver	8h 14m including layover	Find flight from$699
11:56 am — 10:47 pm	11:56 am — 2:13 pm UA2848 United Airlines Seattle — San Francisco 4h 57m stop 7:10 pm — 10:47 pm UA589 United Airlines San Francisco — Denver	9h 51m including layover	Find flight from$269
11:56 am — 8:44 am +1 day	11:56 am — 2:13 pm UA2848 United Airlines Seattle — San Francisco 14h 47m stop 5:00 am — 8:44 am UA1531 United Airlines San Francisco — Denver	19h 48m including layover	Find flight from$269
12:55 pm — 7:40 pm	12:55 pm — 3:12 pm UA737 United Airlines Seattle — San Francisco 48m stop 4:00 pm — 7:40 pm UA566 United Airlines San Francisco — Denver	5h 45m including layover	Find flight from$139
12:55 pm — 10:17 pm	12:55 pm — 3:12 pm UA737 United Airlines Seattle — San Francisco 3h 28m stop 6:40 pm — 10:17 pm UA373 United Airlines San Francisco — Denver	8h 22m including layover	Find flight from$139
1:55 pm — 11:06 pm	1:55 pm — 4:12 pm UA1152 United Airlines Seattle — San Francisco 3h 17m stop 7:29 pm — 11:06 pm UA589 United Airlines San Francisco — Denver	8h 11m including layover	Find flight from$139
1:55 pm — 10:17 pm	1:55 pm — 4:12 pm UA1152 United Airlines Seattle — San Francisco 2h 28m stop 6:40 pm — 10:17 pm UA373 United Airlines San Francisco — Denver	7h 22m including layover	Find flight from$139
2:00 pm — 10:47 pm	2:00 pm — 4:17 pm UA375 United Airlines Seattle — San Francisco 2h 53m stop 7:10 pm — 10:47 pm UA589 United Airlines San Francisco — Denver	7h 47m including layover	Find flight from$165
2:00 pm — 9:52 pm	2:00 pm — 4:17 pm UA375 United Airlines Seattle — San Francisco 1h 58m stop 6:15 pm — 9:52 pm UA297 United Airlines San Francisco — Denver	6h 52m including layover	Find flight from$165
4:23 pm — 11:59 pm	4:23 pm — 6:40 pm UA737 United Airlines Seattle — San Francisco 1h 42m stop 8:22 pm — 11:59 pm UA1230 United Airlines San Francisco — Denver	6h 36m including layover	Find flight from$172
4:35 pm — 11:59 pm	4:20 pm — 6:37 pm UA1914 United Airlines Seattle — San Francisco 1h 30m stop 8:22 pm — 11:59 pm UA1230 United Airlines San Francisco — Denver	6h 24m including layover	Find flight from$176
5:36 am — 2:40 pm	5:36 am — 7:50 am UA1954 United Airlines Seattle — San Francisco 3h 10m stop 11:00 am — 2:40 pm UA1986 United Airlines San Francisco — Denver	8h 4m including layover	Find flight from$139
6:15 am — 10:10 pm	6:15 am — 9:02 am UA1571 United Airlines Seattle — Los Angeles 9h 43m stop 6:45 pm — 10:10 pm UA2610 United Airlines Los Angeles — Denver	14h 55m including layover	Find flight from$275
8:44 am — 6:05 pm	8:44 am — 11:01 am UA1777 United Airlines Seattle — San Francisco 3h 24m stop 2:25 pm — 6:05 pm UA618 United Airlines San Francisco — Denver	8h 21m including layover	Find flight from$139
8:44 am — 4:40 pm	8:44 am — 11:01 am UA1777 United Airlines Seattle — San Francisco 1h 59m stop 1:00 pm — 4:40 pm UA1417 United Airlines San Francisco — Denver	6h 56m including layover	Find flight from$139
9:41 am — 6:05 pm	9:41 am — 11:55 am UA1102 United Airlines Seattle — San Francisco 2h 30m stop 2:25 pm — 6:05 pm UA618 United Airlines San Francisco — Denver	7h 24m including layover	Find flight from$139

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

*Departure and arrival times are local. Last updated on 04/24/2025

Flight Information

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

Departures start from 10:55 am to 9:41 am. Nonstop flight is 2h 42m. The time difference between Seattle and Denver is 1h.

The fastest flight 2h 42m
Average flight time 2h 44m
The earliest flight 10:55 am
The latest flight 9:41 am
Distance 1022 ml

The cheapest months for traveling to Denver are december (from 110 $), november (from 127 $), february (from 140 $).

The most expensive and popular months are january (from 141 $), february (from 140 $), november (from 127 $).

The cheapest flight by United Airlines that our users were able to find is $110. This airfare is economy class on one-way UA2269 flight for February 21, 2025 leaving Seattle-Tacoma Intl in Seattle at 5:02 am, it includes all taxes and additional fees.

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United Airlines Airplanes on the Route

List of the most popular United Airlines airplanes flying from Seattle to Denver:

Boeing 737 MAX 9

from $280

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Boeing 737-800

from $280

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Boeing 737-900

from $288

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Airbus A320

from $326

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Airbus A319

from $339

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Boeing 737 MAX 8

from $784

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Other Popular Airlines on the Route

Besides United Airlines there are other 8 airline carriers between Seattle and Denver. Please review schedules and prices from the most popular airlines to find the best airfare deals from Seattle to Denver.

Nonstop flights

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

F9 - Frontier Airlines

from $36

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DL - Delta Air Lines Inc.

from $125

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AS - Alaska Airlines

from $97

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See more direct flights

Connecting Flights

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

F9 - Frontier Airlines

from $70

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DL - Delta Air Lines Inc.

from $198

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AA - American Airlines

from $148

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AS - Alaska Airlines

from $119

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SY - Sun Country Airlines

from $142

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Y4 - Volaris

from $478

Find
AM - Aeromexico

from $1150

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NK - Spirit Airlines

from $210

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.
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