Alaska Airlines Denver to Seattle Flights

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Best Airfare Price Calendar Flights Schedule

Cheapflightsplus.com will find cheap Alaska Airlines flights from Denver to Seattle. Compare airline ticket prices and book air tickets starting from $91 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 march: one-way - $91, two-way – $156.

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Cheap Flights from Denver to Seattle 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 $91. The fastest nonstop flight takes 3h 2m. The fastest connecting flight — 6h 48m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $91 Find flight	5:08 pm Denver Denver International	7:10 pm Seattle Seattle-Tacoma Intl	3h 2m	Alaska Airlines	AS615
from $91 Find flight	12:38 pm Denver Denver International	2:45 pm Seattle Seattle-Tacoma Intl	3h 7m	Alaska Airlines	AS682
from $177 Find flight	7:55 pm Denver Denver International	9:58 pm Seattle Seattle-Tacoma Intl	3h 3m	Alaska Airlines	AS525
from $144 Find flight	2:49 pm Denver Denver International	7:12 am+1 день Seattle Seattle-Tacoma Intl	17h 23m layover 13h 33m - Portland	Alaska Airlines	AS350 AS124

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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 02/23/2025

Alaska Airlines Flight Schedule Denver to Seattle

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	Flight Details	Flight Time	Price
12:38 pm — 2:45 pm	12:38 pm — 2:45 pm AS682 Alaska Airlines Denver — Seattle	3h 7m	Find flight from$91
2:49 pm — 7:12 am +1 day	12:45 pm — 2:40 pm AS350 Alaska Airlines Denver — Portland 13h 33m stop 6:00 am — 7:03 am AS124 Alaska Airlines Portland — Seattle	17h 23m including layover	Find flight from$144
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	Find flight from$170
2:49 pm — 12:41 pm +1 day	2:49 pm — 4:37 pm AS350 Alaska Airlines Denver — Portland 19h 3m stop 11:40 am — 12:41 pm AS970 Alaska Airlines Portland — Seattle	22h 52m including layover	Find flight from$192
2:49 pm — 10:37 am +1 day	2:49 pm — 4:37 pm AS350 Alaska Airlines Denver — Portland 17h 3m stop 9:40 am — 10:37 am AS3362 Alaska Airlines Portland — Seattle	20h 48m including layover	Find flight from$202
2:49 pm — 9:59 pm	2:49 pm — 4:37 pm AS350 Alaska Airlines Denver — Portland 4h 30m stop 9:07 pm — 9:59 pm AS2115 Alaska Airlines Portland — Seattle	8h 10m including layover	Find flight from$278
2:49 pm — 10:00 pm	2:49 pm — 4:37 pm AS350 Alaska Airlines Denver — Portland 1h 16m stop 5:53 pm — 7:17 pm AS2394 Alaska Airlines Portland — Reno 44m stop 8:01 pm — 10:00 pm AS2357 Alaska Airlines Reno — Seattle	8h 11m including layover	Find flight from$300
2:49 pm — 8:37 pm	2:49 pm — 4:37 pm AS350 Alaska Airlines Denver — Portland 2h 58m stop 7:35 pm — 8:37 pm AS3491 Alaska Airlines Portland — Seattle	6h 48m including layover	Find flight from$303
5:08 pm — 7:10 pm	5:08 pm — 7:10 pm AS615 Alaska Airlines Denver — Seattle	3h 2m	Find flight from$91
7:55 pm — 9:58 pm	7:55 pm — 9:58 pm AS525 Alaska Airlines Denver — Seattle	3h 3m	Find flight from$177

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times are local. Last updated on 02/23/2025

Flight Information

There are 3 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 12:38 pm to 7:55 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 12:38 pm
The latest flight 7:55 pm
Distance 1022 ml

The cheapest months for traveling to Seattle are february (from 91 $), january (from 107 $), december (from 144 $).

The cheapest flight by Alaska Airlines that our users were able to find is $91. This airfare is economy class on one-way AS615 flight for February 21, 2025 leaving Denver International in Denver at 5:08 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 Denver to Seattle:

Other Popular Airlines on the Route

Besides Alaska Airlines there are other 3 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 10 direct flights every day from Denver. Airlines and fares are below:

F9 - Frontier Airlines

from $30

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UA - United Airlines

from $115

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Connecting Flights

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

F9 - Frontier Airlines

from $86

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UA - United Airlines

from $120

Find
Y4 - Volaris

from $1404

Find

See more connecting flights

How to book an air ticket yourself?

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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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