Alaska Airlines Denver to Seattle Flights

Return flight: Seattle – Denver

Cheapflightsplus.com will find cheap Alaska Airlines flights from Denver to Seattle. Compare airline ticket prices and book air tickets starting from $92 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 Denver (CO) — Seattle (WA) 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 january: one-way - $92, two-way – $158.
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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 Arrival Flight Details Flight Time Price
12:38 pm — 2:45 pm
12:38 pm — 2:45 pm AS682 Alaska Airlines
Denver — Seattle
3h 7m
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from$92
1:57 pm — 4:00 pm
1:57 pm — 4:00 pm AS1006 Alaska Airlines
Denver — Seattle
3h 3m
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from$171
5:08 pm — 7:10 pm
5:08 pm — 7:10 pm AS615 Alaska Airlines
Denver — Seattle
3h 2m
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from$92
7:55 pm — 9:58 pm
7:55 pm — 9:58 pm AS525 Alaska Airlines
Denver — Seattle
3h 3m
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from$179
11:53 am — 10:20 am
+1 day
11:53 am — 1:46 pm AS350 Alaska Airlines
Denver — Portland
19h 34m stop
9:20 am — 10:20 am AS2229 Alaska Airlines
Portland — Seattle
23h 27m
including layover
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from$199
11:53 am — 9:03 pm
11:53 am — 1:46 pm AS350 Alaska Airlines
Denver — Portland
6h 14m stop
8:00 pm — 9:03 pm AS2181 Alaska Airlines
Portland — Seattle
10h 10m
including layover
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from$275
2:07 pm — 7:26 pm
12:41 pm — 2:30 pm AS350 Alaska Airlines
Denver — Portland
2h 34m stop
9:34 pm — 10:32 pm AS2082 Alaska Airlines
Portland — Seattle
6h 19m
including layover
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from$134
2:49 pm — 9:02 am
+1 day
11:53 am — 1:46 pm AS350 Alaska Airlines
Denver — Portland
15h 23m stop
7:00 am — 8:05 am AS910 Alaska Airlines
Portland — Seattle
19h 13m
including layover
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from$172
8:34 pm — 10:20 am
+1 day
5:51 pm — 7:39 pm AS129 Alaska Airlines
Denver — Portland
10h 47m stop
9:15 am — 10:15 am AS2229 Alaska Airlines
Portland — Seattle
14h 46m
including layover
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from$151
8:34 pm — 9:19 am
+1 day
5:51 pm — 7:39 pm AS129 Alaska Airlines
Denver — Portland
9h 47m stop
8:00 am — 9:00 am AS2090 Alaska Airlines
Portland — Seattle
13h 45m
including layover
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from$151
*Departure and arrival times are local. Last updated on 12/22/2024

Flight Information

There are 4 flights by Alaska Airlines from Denver to Seattle every week with departures from Denver International and Arapahoe Co. All flights arrive at Seattle-Tacoma Intl, Boeing Field International Airport, Kenmore Air Harbor SPB.

Departures start from 11:53 am to 8:34 pm. Nonstop flight is 3h 2m. The time difference between Denver and Seattle is 1h.

  • The fastest flight 3h 2m
  • Average flight time 3h 3m
  • The earliest flight 11:53 am
  • The latest flight 8:34 pm
  • Distance 1022 ml

The cheapest months for traveling to Seattle are december (from 59 $), february (from 92 $), january (from 109 $).

The most expensive and popular months are november (from 249 $), january (from 109 $), february (from 92 $).

The cheapest flight by Alaska Airlines that our users were able to find is $92. This airfare is economy class on one-way AS615 flight for February 1, 2025 leaving Denver International in Denver at 5:08 pm, it includes all taxes and additional fees.

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Other Popular Airlines on the Route

Besides Alaska Airlines there are other 5 airline carriers between Denver and Seattle. Please review schedules and prices from the most popular airlines to find the best airfare deals from Denver to Seattle.

Nonstop flights

There are 13 direct flights every day from Denver. 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?
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  • 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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