Alaska Airlines Seattle to Denver Flights

Return flight: Denver – Seattle

Cheapflightsplus.com will find cheap Alaska 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 Alaska Airlines, arrivals and departure details below.

Find Cheap Airfare Seattle (WA) — Denver (CO) by Alaska 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 november: one-way - $81, two-way – $139.
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Below is a detailed 2024 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
12:34 pm — 4:12 pm
12:34 pm — 4:12 pm AS602 Alaska Airlines
Seattle — Denver
2h 38m
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from$95
3:21 pm — 6:59 pm
3:21 pm — 6:59 pm AS524 Alaska Airlines
Seattle — Denver
2h 38m
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from$107
4:30 pm — 8:09 pm
4:30 pm — 8:09 pm AS712 Alaska Airlines
Seattle — Denver
2h 39m
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from$115
6:59 pm — 10:36 pm
6:59 pm — 10:36 pm AS321 Alaska Airlines
Seattle — Denver
2h 37m
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from$81
8:24 pm — 11:59 pm
8:24 pm — 11:59 pm AS427 Alaska Airlines
Seattle — Denver
2h 35m
Find flight
from$83
10:00 am — 11:49 am
+1 day
10:00 am — 10:52 am AS2183 Alaska Airlines
Seattle — Portland
21h 21m stop
9:40 am — 1:10 pm AS336 Alaska Airlines
Portland — Denver
24h 49m
including layover
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from$222
10:50 pm — 11:49 am
+1 day
10:51 pm — 11:44 pm AS957 Alaska Airlines
Seattle — Portland
8h 31m stop
9:40 am — 1:10 pm AS336 Alaska Airlines
Portland — Denver
11h 59m
including layover
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from$172
11:23 am — 11:49 am
+1 day
11:27 am — 12:26 pm AS1039 Alaska Airlines
Seattle — Portland
19h 55m stop
9:40 am — 1:10 pm AS336 Alaska Airlines
Portland — Denver
23h 26m
including layover
Find flight
from$185
1:50 pm — 11:49 am
+1 day
1:35 pm — 2:27 pm AS2354 Alaska Airlines
Seattle — Portland
17h 31m stop
9:40 am — 1:10 pm AS336 Alaska Airlines
Portland — Denver
20h 59m
including layover
Find flight
from$307
5:30 pm — 1:07 pm
+1 day
5:30 pm — 6:19 pm AS2007 Alaska Airlines
Seattle — Portland
15h 16m stop
9:35 am — 1:07 pm AS336 Alaska Airlines
Portland — Denver
18h 37m
including layover
Find flight
from$200
6:55 pm — 11:49 am
+1 day
6:55 pm — 7:49 pm AS2225 Alaska Airlines
Seattle — Portland
12h 26m stop
8:15 am — 11:49 am AS336 Alaska Airlines
Portland — Denver
15h 54m
including layover
Find flight
from$215
7:42 am — 1:07 pm
7:42 am — 8:34 am AS2180 Alaska Airlines
Seattle — Portland
1h 1m stop
9:35 am — 1:07 pm AS336 Alaska Airlines
Portland — Denver
4h 25m
including layover
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from$102
7:59 pm — 11:49 am
+1 day
7:55 pm — 8:52 pm AS958 Alaska Airlines
Seattle — Portland
11h 20m stop
9:40 am — 1:10 pm AS336 Alaska Airlines
Portland — Denver
14h 50m
including layover
Find flight
from$172
8:05 am — 1:57 pm
8:05 am — 8:58 am AS3362 Alaska Airlines
Seattle — Portland
1h 21m stop
10:19 am — 1:57 pm AS336 Alaska Airlines
Portland — Denver
4h 52m
including layover
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from$150
9:59 pm — 11:49 am
+1 day
9:59 pm — 10:56 pm AS955 Alaska Airlines
Seattle — Portland
9h 20m stop
9:40 am — 1:10 pm AS336 Alaska Airlines
Portland — Denver
12h 50m
including layover
Find flight
from$172
5:59 pm — 1:07 pm
+1 day
5:59 pm — 8:43 pm AS1054 Alaska Airlines
Seattle — Los Angeles
9h 17m stop
6:00 am — 8:37 am AS1124 Alaska Airlines
Los Angeles — Portland
58m stop
9:35 am — 1:07 pm AS336 Alaska Airlines
Portland — Denver
18h 8m
including layover
Find flight
from$212
9:16 pm — 1:07 pm
+1 day
9:16 pm — 11:59 pm AS1292 Alaska Airlines
Seattle — Los Angeles
6h 1m stop
6:00 am — 8:37 am AS1124 Alaska Airlines
Los Angeles — Portland
58m stop
9:35 am — 1:07 pm AS336 Alaska Airlines
Portland — Denver
14h 51m
including layover
Find flight
from$212
*Departure and arrival times are local. Last updated on 11/18/2024

Flight Information

There are 5 flights by Alaska 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 10:00 am to 9:59 pm. Nonstop flight is 2h 35m. The time difference between Seattle and Denver is 1h.

  • The fastest flight 2h 35m
  • Average flight time 2h 38m
  • The earliest flight 10:00 am
  • The latest flight 9:59 pm
  • Distance 1022 ml

The cheapest months for traveling to Denver are january (from 81 $), december (from 83 $), february (from 95 $).

The most expensive and popular months are november (from 112 $), february (from 95 $), december (from 83 $).

The cheapest flight by Alaska Airlines that our users were able to find is $81. This airfare is economy class on one-way AS321 flight for January 22, 2025 leaving Seattle-Tacoma Intl in Seattle at 6:59 pm, it includes all taxes and additional fees.

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Other Popular Airlines on the Route

Besides Alaska 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 14 direct flights every day from Seattle. Airlines and fares are below:

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Connecting Flights

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

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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.

    To find a plane ticket, please select dates.

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