Alaska Airlines Seattle to Denver Flights

Return flight: Denver – Seattle
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Cheapflightsplus.com will find cheap Alaska Airlines flights from Seattle to Denver. Compare airline ticket prices and book air tickets starting from $94 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 march: one-way - $94, two-way – $161.
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Cheap Flights from Seattle to Denver by Alaska Airlines

Look at the list of plane tickets for the most popular direct and connecting flights by Alaska Airlines, their prices start from $94. The fastest nonstop flight takes 2h 38m. The fastest connecting flight — 4h 52m.
Price Departure Arrival Flight Time Airline Flight
from $94
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12:34 pm
Seattle
Seattle-Tacoma Intl
 4:12 pm
Denver
Denver International
 2h 38m Alaska Airlines
AS602
from $106
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3:21 pm
Seattle
Seattle-Tacoma Intl
 6:59 pm
Denver
Denver International
 2h 38m Alaska Airlines
AS524
from $148
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8:05 am
Seattle
Seattle-Tacoma Intl
 1:57 pm
Denver
Denver International
 4h 52m
layover
1h 21m - Portland
 Alaska Airlines
AS3362
AS336
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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 02/23/2025
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
12:34 pm — 4:12 pm
12:34 pm — 4:12 pm AS602 Alaska Airlines
Seattle — Denver
2h 38m
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from$94
3:21 pm — 6:59 pm
3:21 pm — 6:59 pm AS524 Alaska Airlines
Seattle — Denver
2h 38m
Find flight
from$106
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
Find flight
from$148
*Departure and arrival times are local. Last updated on 02/23/2025

Flight Information

There are 2 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 12:34 pm to 8:05 am. Nonstop flight is 2h 38m. The time difference between Seattle and Denver is 1h.

  • The fastest flight 2h 38m
  • Average flight time 2h 38m
  • The earliest flight 12:34 pm
  • The latest flight 8:05 am
  • Distance 1022 ml

The cheapest months for traveling to Denver are february (from 94 $), january (from 257 $).

The cheapest flight by Alaska Airlines that our users were able to find is $94. This airfare is economy class on one-way AS602 flight for February 21, 2025 leaving Seattle-Tacoma Intl in Seattle at 12:34 pm, it includes all taxes and additional fees.

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Alaska Airlines Airplanes on the Route

List of the most popular Alaska Airlines airplanes flying from Seattle to Denver:

Other Popular Airlines on the Route

Besides Alaska Airlines there are other 4 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 6 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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