Cheap Flights from Seattle, WA to Denver, CO from $33
On Cheapflightsplus.com you will find 24 direct and 460 connecting flights from Seattle to Denver. You can compare airfare deals from 9 airlines and multiple travel sites from $33, 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 $33 | 08:18 Seattle Seattle-Tacoma Intl | 12:01 Denver Denver International | 2h 43m | Frontier Airlines | F93406 |
from $33 | 22:08 Seattle Seattle-Tacoma Intl | 01:51+1 день Denver Denver International | 2h 43m | Frontier Airlines | F91176 |
from $89 | 18:59 Seattle Seattle-Tacoma Intl | 22:36 Denver Denver International | 2h 37m | Alaska Airlines | AS321 |
from $102 | 05:02 Seattle Seattle-Tacoma Intl | 08:44 Denver Denver International | 2h 42m | United Airlines | UA2269 |
from $105 | 12:34 Seattle Seattle-Tacoma Intl | 16:12 Denver Denver International | 2h 38m | Alaska Airlines | AS602 |
from $115 | 19:50 Seattle Seattle-Tacoma Intl | 23:31 Denver Denver International | 2h 41m | Delta Air Lines Inc. | DL2851 |
from $117 | 09:00 Seattle Seattle-Tacoma Intl | 12:43 Denver Denver International | 2h 43m | United Airlines | UA1829 |
from $124 | 08:12 Seattle Seattle-Tacoma Intl | 11:53 Denver Denver International | 2h 41m | Alaska Airlines | AS682 |
from $126 | 08:55 Seattle Seattle-Tacoma Intl | 12:43 Denver Denver International | 2h 48m | Delta Air Lines Inc. | DL2740 |
from $129 | 18:00 Seattle Seattle-Tacoma Intl | 21:44 Denver Denver International | 2h 44m | United Airlines | UA1279 |
from $152 | 19:11 Seattle Seattle-Tacoma Intl | 22:55 Denver Denver International | 2h 44m | United Airlines | UA297 |
from $64 | 16:58 Seattle Seattle-Tacoma Intl | 23:44 Denver Denver International | 5h 46m layover 1h 0m - Phoenix | Frontier Airlines | F93974 F92142 |
from $64 | 12:29 Seattle Seattle-Tacoma Intl | 19:26 Denver Denver International | 5h 57m layover 1h 0m - Ontario | Frontier Airlines | F93163 F92908 |
from $72 | 16:35 Seattle Seattle-Tacoma Intl | 23:33 Denver Denver International | 5h 58m layover 1h 0m - Ontario | Frontier Airlines | F93163 F91500 |
from $83 | 10:36 Seattle Seattle-Tacoma Intl | 08:01+1 день Denver Denver International | 20h 25m layover 16h 38m - Salt Lake City | Frontier Airlines | F94988 F93862 |
from $95 | 09:57 Seattle Seattle-Tacoma Intl | 18:36 Denver Denver International | 7h 39m layover 3h 2m - Las Vegas | Frontier Airlines | F94830 F93844 |
Flight Schedule Seattle (Washington) to Denver (Colorado)
Departure | Arrival | Flight Details | Flight Duration | Price |
---|---|---|---|---|
05:02 — 08:44
|
05:02 — 08:44
UA2269
United Airlines
Seattle — Denver
|
2h 42m |
Find flight
from$102 |
|
08:12 — 11:53
|
08:12 — 11:53
AS682
Alaska Airlines
Seattle — Denver
|
2h 41m |
Find flight
from$124 |
|
08:18 — 12:01
|
08:18 — 12:01
F93406
Frontier Airlines
Seattle — Denver
|
2h 43m |
Find flight
from$33 |
|
08:55 — 12:43
|
08:55 — 12:43
DL2740
Delta Air Lines Inc.
Seattle — Denver
|
2h 48m |
Find flight
from$126 |
|
09:00 — 12:43
|
09:00 — 12:43
UA1829
United Airlines
Seattle — Denver
|
2h 43m |
Find flight
from$117 |
|
12:14 — 15:55
|
12:14 — 15:55
AS620
Alaska Airlines
Seattle — Denver
|
2h 41m |
Find flight
from$154 |
|
12:30 — 16:14
|
12:30 — 16:14
UA431
United Airlines
Seattle — Denver
|
2h 44m |
Find flight
from$190 |
|
12:34 — 16:12
|
12:34 — 16:12
AS602
Alaska Airlines
Seattle — Denver
|
2h 38m |
Find flight
from$105 |
|
12:35 — 16:17
|
12:35 — 16:17
UA1483
United Airlines
Seattle — Denver
|
2h 42m |
Find flight
from$141 |
|
12:46 — 16:31
|
12:46 — 16:31
UA423
United Airlines
Seattle — Denver
|
2h 45m |
Find flight
from$257 |
|
15:18 — 19:00
|
15:18 — 19:00
UA757
United Airlines
Seattle — Denver
|
2h 42m |
Find flight
from$141 |
|
15:18 — 18:56
|
15:18 — 18:56
AS710
Alaska Airlines
Seattle — Denver
|
2h 38m |
Find flight
from$343 |
|
15:20 — 19:04
|
15:20 — 19:04
UA1476
United Airlines
Seattle — Denver
|
2h 44m |
Find flight
from$117 |
|
15:21 — 18:59
|
15:21 — 18:59
AS524
Alaska Airlines
Seattle — Denver
|
2h 38m |
Find flight
from$119 |
|
15:31 — 19:19
|
15:31 — 19:19
DL4094
Delta Air Lines Inc.
Seattle — Denver
|
2h 48m |
Find flight
from$126 |
|
16:30 — 20:09
|
16:30 — 20:09
AS712
Alaska Airlines
Seattle — Denver
|
2h 39m |
Find flight
from$127 |
|
18:00 — 21:44
|
18:00 — 21:44
UA1279
United Airlines
Seattle — Denver
|
2h 44m |
Find flight
from$129 |
|
18:35 — 22:13
|
18:35 — 22:13
AS737
Alaska Airlines
Seattle — Denver
|
2h 38m |
Find flight
from$112 |
|
18:59 — 22:36
|
18:59 — 22:36
AS321
Alaska Airlines
Seattle — Denver
|
2h 37m |
Find flight
from$89 |
|
19:11 — 22:55
|
19:11 — 22:55
UA297
United Airlines
Seattle — Denver
|
2h 44m |
Find flight
from$152 |
|
19:13 — 22:57
|
19:13 — 22:57
UA1387
United Airlines
Seattle — Denver
|
2h 44m |
Find flight
from$155 |
|
19:50 — 23:31
|
19:50 — 23:31
DL2851
Delta Air Lines Inc.
Seattle — Denver
|
2h 41m |
Find flight
from$115 |
|
20:24 — 23:59
|
20:24 — 23:59
AS427
Alaska Airlines
Seattle — Denver
|
2h 35m |
Find flight
from$92 |
|
22:08 — 01:51
+1 day
|
22:08 — 01:51
F91176
Frontier Airlines
Seattle — Denver
|
2h 43m |
Find flight
from$33 |
|
05:36 — 14:40
|
05:36 — 07:50
UA1954
United Airlines
Seattle — San Francisco
3h 10m stop
11:00 — 14:40
UA1986
United Airlines
San Francisco — Denver
|
8h 4m including layover |
Find flight
from$128 |
|
06:16 — 15:13
|
06:16 — 10:15
AA4864
American Airlines
Seattle — Phoenix
3h 12m stop
13:27 — 15:13
AA2324
American Airlines
Phoenix — Denver
|
7h 57m including layover |
Find flight
from$136 |
|
06:35 — 11:45
|
06:35 — 07:31
AS2111
Alaska Airlines
Seattle — Portland
44m stop
09:40 — 13:10
AS336
Alaska Airlines
Portland — Denver
|
4h 10m including layover |
Find flight
from$110 |
|
07:42 — 13:07
|
07:42 — 08:34
AS2180
Alaska Airlines
Seattle — Portland
1h 1m stop
09:35 — 13:07
AS336
Alaska Airlines
Portland — Denver
|
4h 25m including layover |
Find flight
from$113 |
|
09:57 — 18:36
|
13:40 — 16:20
F94830
Frontier Airlines
Seattle — Las Vegas
3h 2m stop
15:38 — 18:36
F93844
Frontier Airlines
Las Vegas — Denver
|
7h 39m including layover |
Find flight
from$95 |
|
09:57 — 00:49
+1 day
|
09:57 — 12:36
F94830
Frontier Airlines
Seattle — Las Vegas
9h 17m stop
21:53 — 00:49
F94968
Frontier Airlines
Las Vegas — Denver
|
13h 52m including layover |
Find flight
from$98 |
|
10:36 — 08:01
+1 day
|
09:57 — 13:05
F94988
Frontier Airlines
Seattle — Salt Lake City
16h 38m stop
06:15 — 07:52
F93862
Frontier Airlines
Salt Lake City — Denver
|
20h 25m including layover |
Find flight
from$83 |
|
10:36 — 12:25
+1 day
|
09:57 — 13:05
F94988
Frontier Airlines
Seattle — Salt Lake City
21h 13m stop
10:45 — 12:22
F93982
Frontier Airlines
Salt Lake City — Denver
|
24h 49m including layover |
Find flight
from$83 |
|
11:36 — 03:59
+1 day
|
11:36 — 14:11
F94204
Frontier Airlines
Seattle — Las Vegas
10h 48m stop
00:59 — 03:59
F92430
Frontier Airlines
Las Vegas — Denver
|
15h 23m including layover |
Find flight
from$84 |
|
11:40 — 19:21
|
11:40 — 15:45
AA5004
American Airlines
Seattle — Phoenix
1h 45m stop
17:30 — 19:21
AA1309
American Airlines
Phoenix — Denver
|
6h 41m including layover |
Find flight
from$136 |
|
12:07 — 18:40
|
14:55 — 17:32
F94830
Frontier Airlines
Seattle — Las Vegas
53m stop
00:59 — 03:59
F92430
Frontier Airlines
Las Vegas — Denver
|
5h 33m including layover |
Find flight
from$71 |
|
12:29 — 19:26
|
12:29 — 15:08
F93163
Frontier Airlines
Seattle — Ontario
1h stop
16:08 — 19:26
F92908
Frontier Airlines
Ontario — Denver
|
5h 57m including layover |
Find flight
from$64 |
|
13:55 — 22:17
|
13:55 — 16:12
UA1152
United Airlines
Seattle — San Francisco
2h 28m stop
18:40 — 22:17
UA373
United Airlines
San Francisco — Denver
|
7h 22m including layover |
Find flight
from$128 |
|
13:55 — 23:06
|
13:55 — 16:12
UA1152
United Airlines
Seattle — San Francisco
3h 17m stop
19:29 — 23:06
UA589
United Airlines
San Francisco — Denver
|
8h 11m including layover |
Find flight
from$128 |
|
14:00 — 21:52
|
14:00 — 16:17
UA375
United Airlines
Seattle — San Francisco
1h 58m stop
18:15 — 21:52
UA297
United Airlines
San Francisco — Denver
|
6h 52m including layover |
Find flight
from$152 |
|
14:00 — 22:47
|
14:00 — 16:17
UA375
United Airlines
Seattle — San Francisco
2h 53m stop
19:10 — 22:47
UA589
United Airlines
San Francisco — Denver
|
7h 47m including layover |
Find flight
from$152 |
|
16:35 — 23:33
|
19:28 — 22:08
F93163
Frontier Airlines
Seattle — Ontario
1h stop
06:30 — 09:54
F91500
Frontier Airlines
Ontario — Denver
|
5h 58m including layover |
Find flight
from$72 |
|
16:58 — 23:44
|
16:58 — 20:50
F93974
Frontier Airlines
Seattle — Phoenix
1h stop
21:50 — 23:44
F92142
Frontier Airlines
Phoenix — Denver
|
5h 46m including layover |
Find flight
from$64 |
|
17:21 — 07:53
+1 day
|
17:21 — 23:31
F94066
Frontier Airlines
Seattle — Dallas
7h 2m stop
06:33 — 07:53
F93365
Frontier Airlines
Dallas — Denver
|
13h 32m including layover |
Find flight
from$96 |
|
17:46 — 07:26
+1 day
|
17:46 — 23:39
F94066
Frontier Airlines
Seattle — Dallas
6h 36m stop
06:15 — 07:26
F91323
Frontier Airlines
Dallas — Denver
|
12h 40m including layover |
Find flight
from$98 |
|
19:51 — 12:09
+1 day
|
14:55 — 17:32
F94830
Frontier Airlines
Seattle — Las Vegas
10h 26m stop
08:18 — 11:19
F92016
Frontier Airlines
Las Vegas — Denver
|
15h 18m including layover |
Find flight
from$65 |
|
19:51 — 14:31
+1 day
|
14:55 — 17:32
F94830
Frontier Airlines
Seattle — Las Vegas
12h 41m stop
11:00 — 14:06
F92350
Frontier Airlines
Las Vegas — Denver
|
17h 40m including layover |
Find flight
from$96 |
|
21:52 — 07:51
+1 day
|
21:52 — 01:44
F93974
Frontier Airlines
Seattle — Phoenix
4h 16m stop
06:00 — 07:51
F91376
Frontier Airlines
Phoenix — Denver
|
8h 59m including layover |
Find flight
from$76 |
|
21:52 — 10:03
+1 day
|
21:52 — 01:44
F93974
Frontier Airlines
Seattle — Phoenix
6h 21m stop
08:15 — 10:11
F94768
Frontier Airlines
Phoenix — Denver
|
11h 11m including layover |
Find flight
from$76 |
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 00:25 to 23:59 from 3 Seattle airports and arrive 00:25 to 23:59 to 2 Denver airports. Average flight time is 2h 42m.
- The fastest flight 2h 35m
- Average flight time 2h 42m
- The earliest flight 00:25
- The latest flight 23:59
- Distance 1022 ml
The cheapest months to travel to Denver are november (from 33 $), december (from 64 $), february (from 67 $).
The most expensive months are january (from 72 $), february (from 67 $), december (from 64 $).
What is the lowest airfare Seattle to Denver?
The cheapest plane ticket found by our users is $33. This airfare is for economy class on one-way F91176 flight by Frontier Airlines for February 21, 2025 which leaves Seattle-Tacoma Intl in Seattle at 22:08 am and arrives at Denver Denver International at 01:51.
Popular Airlines on the Route
The flight Seattle — Denver is served by 9 regular airlines and 4 low-cost airlines. Most of the flights on this route are operated by Frontier Airlines - 28 departures per week at the price of from $ 33 . And the most expensive tickets are offered by American Airlines airline - from $ 1394.
Direct flights
There are 24 nonstop flights on the route. The fastest direct flight is AS427 by Alaska Airlines takes 2h 35m and the cheapest is F91176 by Frontier Airlines for $33.
- from $33Find
- from $115Find
- from $102Find
- AS - Alaska Airlinesfrom $89Find
Connecting Flights
There are 460 flights with layovers on the route. The fastest connecting flight is AS2111 by Alaska Airlines takes 4h 10m and the cheapest is F91176 by Frontier Airlines for $64.
- from $64Find
- from $183Find
- from $128Find
- AA - American Airlinesfrom $136Find
- AS - Alaska Airlinesfrom $110Find
- SY - Sun Country Airlinesfrom $131Find
- Y4 - Volarisfrom $441Find
- AM - Aeromexicofrom $1059Find
- NK - Spirit Airlinesfrom $193Find
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 $33Find
- Kenmore Air Harbor SPB-LKEFind
Denver airports
- Denver International-DENFind
- Arapahoe Co-APAFind
Airplanes
There are flights to Denver from Seattle by 9 airlines that use 10 aircraft brands. They range from huge modern airplanes to small-sized.
- Boeing 737-800from $115Find
- Canadair Regional Jet 700from $136Find
- Embraer 175 (short wing)from $136Find
- Boeing 737-900from $183Find
- Boeing 737 MAX 9from $258Find
- Airbus A320from $300Find
- Airbus A319from $312Find
- Boeing 737 MAX 8from $324Find
- Boeing 737from $325Find
- Boeing 737-100/200from $343Find
Top Domestic Destinations from Seattle
You may also consider searching for discounted plane tickets to some other popular places from Seattle within United States.
- from $78Find
- from $62Find
- from $180Find
- from $73Find
- from $67Find
- from $74Find
- from $53Find
- from $243Find
- from $72Find
- from $63Find
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
- from $70Find
- from $57Find
- from $63Find
- from $66Find
- from $64Find
- from $76Find
- from $80Find
- from $68Find
- from $64Find
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.
To find a plane ticket, please select dates.