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 $81 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 june: one-way - $81, two-way – $139.

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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 $81. The fastest nonstop flight takes 2h 40m. The fastest connecting flight — 5h 46m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $81 Find flight	7:00 pm Seattle Seattle-Tacoma Intl	10:40 pm Denver Denver International	2h 40m	United Airlines	UA1218
from $81 Find flight	8:45 am Seattle Seattle-Tacoma Intl	12:28 pm Denver Denver International	2h 43m	United Airlines	UA1505
from $81 Find flight	5:07 am Seattle Seattle-Tacoma Intl	8:48 am Denver Denver International	2h 41m	United Airlines	UA2269
from $82 Find flight	3:45 pm Seattle Seattle-Tacoma Intl	7:29 pm Denver Denver International	2h 44m	United Airlines	UA757
from $98 Find flight	12:43 pm Seattle Seattle-Tacoma Intl	4:30 pm Denver Denver International	2h 47m	United Airlines	UA1969
from $98 Find flight	11:04 am Seattle Seattle-Tacoma Intl	2:51 pm Denver Denver International	2h 47m	United Airlines	UA1049
from $104 Find flight	12:43 pm Seattle Seattle-Tacoma Intl	4:30 pm Denver Denver International	2h 47m	United Airlines	UA1417
from $106 Find flight	8:57 am Seattle Seattle-Tacoma Intl	12:43 pm Denver Denver International	2h 46m	United Airlines	UA1359
from $106 Find flight	3:45 pm Seattle Seattle-Tacoma Intl	7:36 pm Denver Denver International	2h 51m	United Airlines	UA1747
from $106 Find flight	2:24 pm Seattle Seattle-Tacoma Intl	6:15 pm Denver Denver International	2h 51m	United Airlines	UA2859
from $115 Find flight	3:35 pm Seattle Seattle-Tacoma Intl	7:27 pm Denver Denver International	2h 52m	United Airlines	UA1476
from $168 Find flight	8:57 am Seattle Seattle-Tacoma Intl	12:43 pm Denver Denver International	2h 46m	United Airlines	UA347
from $108 Find flight	12:52 pm Seattle Seattle-Tacoma Intl	8:08 pm Denver Denver International	6h 16m layover 1h 21m - San Francisco	United Airlines	UA1482 UA2464
from $108 Find flight	8:42 am Seattle Seattle-Tacoma Intl	6:14 pm Denver Denver International	8h 32m layover 3h 37m - San Francisco	United Airlines	UA737 UA1596
from $143 Find flight	2:50 pm Seattle Seattle-Tacoma Intl	10:39 pm Denver Denver International	6h 49m layover 1h 57m - San Francisco	United Airlines	UA1620 UA1230
from $173 Find flight	7:35 pm Seattle Seattle-Tacoma Intl	8:35 am+1 день Denver Denver International	12h 0m layover 7h 11m - San Francisco	United Airlines	UA2632 UA2420

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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 06/05/2025

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
10:50 am — 2:36 pm	10:50 am — 2:36 pm UA1061 United Airlines Seattle — Denver	2h 46m	Find flight from$115
11:04 am — 2:51 pm	11:04 am — 2:51 pm UA1049 United Airlines Seattle — Denver	2h 47m	Find flight from$98
12:43 pm — 4:30 pm	12:43 pm — 4:30 pm UA1969 United Airlines Seattle — Denver	2h 47m	Find flight from$98
12:43 pm — 4:30 pm	12:43 pm — 4:30 pm UA1417 United Airlines Seattle — Denver	2h 47m	Find flight from$104
2:24 pm — 6:15 pm	2:24 pm — 6:15 pm UA2859 United Airlines Seattle — Denver	2h 51m	Find flight from$106
2:30 pm — 6:20 pm	2:30 pm — 6:20 pm UA1733 United Airlines Seattle — Denver	2h 50m	Find flight from$115
3:35 pm — 7:27 pm	3:35 pm — 7:27 pm UA1476 United Airlines Seattle — Denver	2h 52m	Find flight from$115
3:45 pm — 7:29 pm	3:45 pm — 7:29 pm UA757 United Airlines Seattle — Denver	2h 44m	Find flight from$82
3:45 pm — 7:36 pm	3:45 pm — 7:36 pm UA1747 United Airlines Seattle — Denver	2h 51m	Find flight from$106
5:07 am — 8:48 am	5:07 am — 8:48 am UA2269 United Airlines Seattle — Denver	2h 41m	Find flight from$81
7:00 pm — 10:40 pm	7:00 pm — 10:40 pm UA1218 United Airlines Seattle — Denver	2h 40m	Find flight from$81
8:45 am — 12:28 pm	8:45 am — 12:28 pm UA1505 United Airlines Seattle — Denver	2h 43m	Find flight from$81
8:57 am — 12:43 pm	8:57 am — 12:43 pm UA1359 United Airlines Seattle — Denver	2h 46m	Find flight from$106
8:57 am — 12:43 pm	8:57 am — 12:43 pm UA347 United Airlines Seattle — Denver	2h 46m	Find flight from$168
8:58 am — 12:44 pm	8:58 am — 12:44 pm UA617 United Airlines Seattle — Denver	2h 46m	Find flight from$115
0:20 am — 8:58 am	0:20 am — 6:28 am UA1832 United Airlines Seattle — Chicago 42m stop 7:10 am — 8:58 am UA791 United Airlines Chicago — Denver	7h 38m including layover	Find flight from$463
10:46 pm — 10:15 am +1 day	10:46 pm — 7:00 am UA341 United Airlines Seattle — Newark 1h stop 8:00 am — 10:15 am UA2706 United Airlines Newark — Denver	10h 29m including layover	Find flight from$354
11:48 pm — 11:22 pm +1 day	11:48 pm — 5:51 am UA1180 United Airlines Seattle — Chicago 15h 41m stop 9:32 pm — 11:22 pm UA767 United Airlines Chicago — Denver	22h 34m including layover	Find flight from$207
1:00 pm — 10:18 pm	1:00 pm — 3:15 pm UA1620 United Airlines Seattle — San Francisco 3h 27m stop 6:42 pm — 10:18 pm UA1745 United Airlines San Francisco — Denver	8h 18m including layover	Find flight from$110
1:00 pm — 8:08 pm	1:00 pm — 3:15 pm UA1620 United Airlines Seattle — San Francisco 1h 13m stop 4:28 pm — 8:08 pm UA566 United Airlines San Francisco — Denver	6h 8m including layover	Find flight from$120
5:10 am — 12:14 pm	5:10 am — 7:22 am UA706 United Airlines Seattle — San Francisco 1h 13m stop 8:35 am — 12:14 pm UA2348 United Airlines San Francisco — Denver	6h 4m including layover	Find flight from$109
6:45 am — 6:08 pm	6:45 am — 9:40 am UA2127 United Airlines Seattle — Los Angeles 4h 58m stop 2:38 pm — 6:08 pm UA1294 United Airlines Los Angeles — Denver	10h 23m including layover	Find flight from$195
6:45 am — 7:40 pm	6:25 am — 9:20 am UA2127 United Airlines Seattle — Los Angeles 6h 33m stop 4:11 pm — 7:40 pm UA2146 United Airlines Los Angeles — Denver	11h 55m including layover	Find flight from$195
7:00 am — 2:56 pm	7:00 am — 9:19 am UA2640 United Airlines Seattle — San Francisco 1h 57m stop 11:16 am — 2:56 pm UA2076 United Airlines San Francisco — Denver	6h 56m including layover	Find flight from$108
9:50 am — 6:13 pm	9:50 am — 12:09 pm UA1470 United Airlines Seattle — San Francisco 2h 21m stop 2:30 pm — 6:13 pm UA2142 United Airlines San Francisco — Denver	7h 23m including layover	Find flight from$109
9:50 am — 10:39 pm	9:50 am — 12:09 pm UA1470 United Airlines Seattle — San Francisco 6h 54m stop 7:03 pm — 10:39 pm UA1230 United Airlines San Francisco — Denver	11h 49m including layover	Find flight from$181

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

*Departure and arrival times are local. Last updated on 06/05/2025

Flight Information

There are 15 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 0:20 am to 9:50 am. Nonstop flight is 2h 40m. The time difference between Seattle and Denver is 1h.

The fastest flight 2h 40m
Average flight time 2h 46m
The earliest flight 0:20 am
The latest flight 9:50 am
Distance 1022 ml

The cheapest months for traveling to Denver are october (from 109 $), september (from 110 $), august (from 110 $).

The most expensive and popular months are june (from 154 $), may (from 153 $), july (from 142 $).

The cheapest flight by United Airlines that our users were able to find is $81. This airfare is economy class on one-way UA1218 flight for October 7, 2025 leaving Seattle-Tacoma Intl in Seattle at 7:00 pm, 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:

Other Popular Airlines on the Route

Besides United Airlines there are other 6 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 35 direct flights every day from Seattle. Airlines and fares are below:

F9 - Frontier Airlines

from $38

Find
AS - Alaska Airlines

from $63

Find
HA - Hawaiian Airlines

from $60

Find

See more direct flights

Connecting Flights

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

F9 - Frontier Airlines

from $75

Find
AS - Alaska Airlines

from $87

Find
SY - Sun Country Airlines

from $103

Find
TK - Turkish Airlines

from $1221

Find
HA - Hawaiian Airlines

from $79

Find
NK - Spirit Airlines

from $105

Find

See more connecting flights

How to book an air ticket yourself?

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