Cheap Flights from Seattle, WA to Denver, CO from $57
On Cheapflightsplus.com you will find 21 direct and 170 connecting flights from Seattle to Denver. You can compare airfare deals from 7 airlines and multiple travel sites from $57, book and save on cheap plane tickets and last minute offers. Also check out SEA-DEN flight schedule to find best flight time, convenient departure and arrival airports.
Find One-Way and Round-Trip Seattle to Denver Flight Deals
Best Flights from Seattle to Denver Today
Price | Departure | Arrival | Flight Duration | Airline | Flight |
---|---|---|---|---|---|
from $57 | 16:59 Seattle Seattle-Tacoma Intl | 20:47 Denver Denver International | 2h 48m | Frontier Airlines | F91176 |
from $60 | 20:17 Seattle Seattle-Tacoma Intl | 23:59 Denver Denver International | 2h 42m | Hawaiian Airlines | HA6652 |
from $60 | 17:59 Seattle Seattle-Tacoma Intl | 21:46 Denver Denver International | 2h 47m | Hawaiian Airlines | HA6654 |
from $63 | 17:59 Seattle Seattle-Tacoma Intl | 21:46 Denver Denver International | 2h 47m | Alaska Airlines | AS1163 |
from $63 | 06:25 Seattle Seattle-Tacoma Intl | 10:12 Denver Denver International | 2h 47m | Frontier Airlines | F93406 |
from $64 | 20:17 Seattle Seattle-Tacoma Intl | 23:59 Denver Denver International | 2h 42m | Alaska Airlines | AS642 |
from $83 | 19:00 Seattle Seattle-Tacoma Intl | 22:40 Denver Denver International | 2h 40m | United Airlines | UA1218 |
from $93 | 15:49 Seattle Seattle-Tacoma Intl | 19:32 Denver Denver International | 2h 43m | Hawaiian Airlines | HA6650 |
from $96 | 08:06 Seattle Seattle-Tacoma Intl | 11:53 Denver Denver International | 2h 47m | Alaska Airlines | AS682 |
from $99 | 11:04 Seattle Seattle-Tacoma Intl | 14:51 Denver Denver International | 2h 47m | United Airlines | UA1049 |
from $121 | 13:13 Seattle Seattle-Tacoma Intl | 16:54 Denver Denver International | 2h 41m | Alaska Airlines | AS620 |
from $145 | 10:20 Seattle Seattle-Tacoma Intl | 14:07 Denver Denver International | 2h 47m | Alaska Airlines | AS535 |
from $171 | 08:57 Seattle Seattle-Tacoma Intl | 12:43 Denver Denver International | 2h 46m | United Airlines | UA347 |
from $80 | 14:59 Seattle Seattle-Tacoma Intl | 23:47 Denver Denver International | 7h 48m layover 2h 32m - San Diego | Hawaiian Airlines | HA6885 HA6403 |
from $81 | 15:44 Seattle Seattle-Tacoma Intl | 03:59+1 день Denver Denver International | 11h 15m layover 6h 35m - Las Vegas | Frontier Airlines | F94830 F91994 |
from $88 | 14:59 Seattle Seattle-Tacoma Intl | 23:47 Denver Denver International | 7h 48m layover 2h 32m - San Diego | Alaska Airlines | AS1146 AS1070 |
Flight Schedule Seattle (Washington) to Denver (Colorado)
Departure | Arrival | Flight Details | Flight Duration | Price |
---|---|---|---|---|
05:07 — 08:48
|
05:07 — 08:48
UA2269
United Airlines
Seattle — Denver
|
2h 41m |
Find flight
from$83 |
|
06:25 — 10:12
|
06:25 — 10:12
F93406
Frontier Airlines
Seattle — Denver
|
2h 47m |
Find flight
from$63 |
|
08:06 — 11:53
|
08:06 — 11:53
AS682
Alaska Airlines
Seattle — Denver
|
2h 47m |
Find flight
from$96 |
|
08:45 — 12:28
|
08:45 — 12:28
UA1505
United Airlines
Seattle — Denver
|
2h 43m |
Find flight
from$83 |
|
08:57 — 12:43
|
08:57 — 12:43
UA1359
United Airlines
Seattle — Denver
|
2h 46m |
Find flight
from$108 |
|
08:57 — 12:43
|
08:57 — 12:43
UA347
United Airlines
Seattle — Denver
|
2h 46m |
Find flight
from$171 |
|
10:20 — 14:07
|
10:20 — 14:07
AS535
Alaska Airlines
Seattle — Denver
|
2h 47m |
Find flight
from$145 |
|
11:04 — 14:51
|
11:04 — 14:51
UA1049
United Airlines
Seattle — Denver
|
2h 47m |
Find flight
from$99 |
|
12:43 — 16:30
|
12:43 — 16:30
UA1969
United Airlines
Seattle — Denver
|
2h 47m |
Find flight
from$99 |
|
12:43 — 16:30
|
12:43 — 16:30
UA1417
United Airlines
Seattle — Denver
|
2h 47m |
Find flight
from$105 |
|
13:13 — 16:54
|
13:13 — 16:54
AS620
Alaska Airlines
Seattle — Denver
|
2h 41m |
Find flight
from$121 |
|
14:24 — 18:15
|
14:24 — 18:15
UA2859
United Airlines
Seattle — Denver
|
2h 51m |
Find flight
from$108 |
|
15:45 — 19:29
|
15:45 — 19:29
UA757
United Airlines
Seattle — Denver
|
2h 44m |
Find flight
from$84 |
|
15:45 — 19:36
|
15:45 — 19:36
UA1747
United Airlines
Seattle — Denver
|
2h 51m |
Find flight
from$108 |
|
15:49 — 19:32
|
15:49 — 19:32
HA6650
Hawaiian Airlines
Seattle — Denver
|
2h 43m |
Find flight
from$93 |
|
16:59 — 20:47
|
16:59 — 20:47
F91176
Frontier Airlines
Seattle — Denver
|
2h 48m |
Find flight
from$57 |
|
17:59 — 21:46
|
17:59 — 21:46
HA6654
Hawaiian Airlines
Seattle — Denver
|
2h 47m |
Find flight
from$60 |
|
17:59 — 21:46
|
17:59 — 21:46
AS1163
Alaska Airlines
Seattle — Denver
|
2h 47m |
Find flight
from$63 |
|
19:00 — 22:40
|
19:00 — 22:40
UA1218
United Airlines
Seattle — Denver
|
2h 40m |
Find flight
from$83 |
|
20:17 — 23:59
|
20:17 — 23:59
HA6652
Hawaiian Airlines
Seattle — Denver
|
2h 42m |
Find flight
from$60 |
|
20:17 — 23:59
|
20:17 — 23:59
AS642
Alaska Airlines
Seattle — Denver
|
2h 42m |
Find flight
from$64 |
|
05:25 — 10:37
|
05:25 — 06:20
HA6833
Hawaiian Airlines
Seattle — Portland
40m stop
07:00 — 10:37
HA6337
Hawaiian Airlines
Portland — Denver
|
4h 12m including layover |
Find flight
from$90 |
|
07:00 — 14:56
|
07:00 — 09:19
UA2640
United Airlines
Seattle — San Francisco
1h 57m stop
11:16 — 14:56
UA2076
United Airlines
San Francisco — Denver
|
6h 56m including layover |
Find flight
from$110 |
|
07:00 — 16:36
|
07:00 — 09:19
UA2640
United Airlines
Seattle — San Francisco
3h 36m stop
12:55 — 16:36
UA1333
United Airlines
San Francisco — Denver
|
8h 36m including layover |
Find flight
from$124 |
|
09:44 — 23:52
|
09:14 — 15:10
F94066
Frontier Airlines
Seattle — Dallas
6h 52m stop
22:30 — 23:57
F94069
Frontier Airlines
Dallas — Denver
|
13h 8m including layover |
Find flight
from$81 |
|
09:50 — 18:13
|
09:50 — 12:09
UA1470
United Airlines
Seattle — San Francisco
2h 21m stop
14:30 — 18:13
UA2142
United Airlines
San Francisco — Denver
|
7h 23m including layover |
Find flight
from$111 |
|
11:00 — 19:10
|
11:00 — 13:57
HA6887
Hawaiian Airlines
Seattle — San Diego
1h 40m stop
15:37 — 19:10
HA6408
Hawaiian Airlines
San Diego — Denver
|
7h 10m including layover |
Find flight
from$129 |
|
12:13 — 23:20
|
12:13 — 15:13
F93974
Frontier Airlines
Seattle — Phoenix
5h 8m stop
20:21 — 23:20
F92142
Frontier Airlines
Phoenix — Denver
|
10h 7m including layover |
Find flight
from$88 |
|
13:50 — 20:42
|
12:29 — 15:08
F93163
Frontier Airlines
Seattle — Ontario
51m stop
16:08 — 19:26
F92908
Frontier Airlines
Ontario — Denver
|
5h 52m including layover |
Find flight
from$89 |
|
13:50 — 21:04
|
13:50 — 19:11
SY284
Sun Country Airlines
Seattle — Minneapolis
49m stop
20:00 — 21:04
SY1609
Sun Country Airlines
Minneapolis — Denver
|
6h 14m including layover |
Find flight
from$105 |
|
14:37 — 04:20
+1 day
|
13:50 — 16:26
F93163
Frontier Airlines
Seattle — Ontario
7h 43m stop
00:59 — 04:17
F91500
Frontier Airlines
Ontario — Denver
|
12h 43m including layover |
Find flight
from$81 |
|
14:59 — 23:47
|
14:59 — 17:47
HA6885
Hawaiian Airlines
Seattle — San Diego
2h 32m stop
20:19 — 23:47
HA6403
Hawaiian Airlines
San Diego — Denver
|
7h 48m including layover |
Find flight
from$80 |
|
15:44 — 03:59
+1 day
|
15:11 — 17:50
F94830
Frontier Airlines
Seattle — Las Vegas
6h 35m stop
00:59 — 04:00
F91994
Frontier Airlines
Las Vegas — Denver
|
11h 15m including layover |
Find flight
from$81 |
|
15:44 — 09:09
+1 day
|
14:55 — 17:32
F94830
Frontier Airlines
Seattle — Las Vegas
11h 36m stop
11:00 — 14:06
F92350
Frontier Airlines
Las Vegas — Denver
|
16h 25m including layover |
Find flight
from$81 |
|
16:54 — 22:33
|
16:29 — 19:36
F94988
Frontier Airlines
Seattle — Salt Lake City
55m stop
20:36 — 22:12
F94252
Frontier Airlines
Salt Lake City — Denver
|
4h 39m including layover |
Find flight
from$85 |
|
19:02 — 17:29
+1 day
|
18:33 — 23:59
SY286
Sun Country Airlines
Seattle — Minneapolis
15h 56m stop
16:12 — 17:27
SY657
Sun Country Airlines
Minneapolis — Denver
|
21h 27m including layover |
Find flight
from$131 |
|
23:59 — 11:22
+1 day
|
23:59 — 05:16
SY290
Sun Country Airlines
Seattle — Minneapolis
4h 56m stop
12:06 — 13:17
SY653
Sun Country Airlines
Minneapolis — Denver
|
10h 23m including layover |
Find flight
from$105 |
|
23:59 — 10:23
+1 day
|
23:59 — 05:13
SY290
Sun Country Airlines
Seattle — Minneapolis
3h 56m stop
15:54 — 17:01
SY1609
Sun Country Airlines
Minneapolis — Denver
|
9h 24m including layover |
Find flight
from$117 |
Flight Information
Below we will explain in detail what the flights cost on the destination from Seattle to Denver depends on and how to choose the most interesting flight option for you.
Distance between Seattle and Denver is 1644 miles. Time difference between the cities is 1h. Airplanes depart 00:20 to 23:59 from 3 Seattle airports and arrive 00:20 to 23:59 to 2 Denver airports. Average flight time is 2h 47m.
- The fastest flight 2h 40m
- Average flight time 2h 47m
- The earliest flight 00:20
- The latest flight 23:59
- Distance 1022 ml
The cheapest months to travel to Denver are june (from 52 $), may (from 54 $), december (from 72 $).
The most expensive months are november (from 229 $), february (from 107 $), october (from 85 $).
What is the lowest airfare Seattle to Denver?
The cheapest plane ticket found by our users is $57. This airfare is for economy class on one-way F91176 flight by Frontier Airlines for August 15, 2025 which leaves Seattle-Tacoma Intl in Seattle at 16:59 am and arrives at Denver Denver International at 20:47.
Popular Airlines on the Route
The flight Seattle — Denver is served by 7 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Frontier Airlines - 14 departures per week at the price of from $ 57 . And the most expensive tickets are offered by Turkish Airlines airline - from $ 1240.
Direct flights
There are 21 nonstop flights on the route. The fastest direct flight is UA1218 by United Airlines takes 2h 40m and the cheapest is F91176 by Frontier Airlines for $57.
- from $57Find
- from $83Find
- AS - Alaska Airlinesfrom $63Find
- HA - Hawaiian Airlinesfrom $60Find
Connecting Flights
There are 170 flights with layovers on the route. The fastest connecting flight is HA6826 by Hawaiian Airlines takes 4h 11m and the cheapest is F91176 by Frontier Airlines for $80.
- from $81Find
- from $110Find
- AS - Alaska Airlinesfrom $88Find
- SY - Sun Country Airlinesfrom $105Find
- TK - Turkish Airlinesfrom $1240Find
- HA - Hawaiian Airlinesfrom $80Find
- NK - Spirit Airlinesfrom $107Find
Airports
You can fly from Seattle to Denver from 3 airports (Boeing Field International Airport, Seattle-Tacoma Intl, Kenmore Air Harbor SPB).
Seattle airports
- Boeing Field International Airport-BFIFind
- Seattle-Tacoma Intl-SEAfrom $57Find
- Kenmore Air Harbor SPB-LKEFind
Denver airports
- Denver International-DENFind
- Arapahoe Co-APAFind
Airplanes
There are flights to Denver from Seattle by 7 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.
Top Domestic Destinations from Seattle
You may also consider searching for discounted plane tickets to some other popular places from Seattle within United States.
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Top International Destinations from Seattle
Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.
- from $77Find
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How to book a plane 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 flight ticket.
- 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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