$1,017 Cheap Flights from Denver (DEN) to Unalaska (DUT)

View $1,017 flight on Mon, Dec 8, 2025Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Unalaska, AK (DUT)

Cheap Flights from Denver to Unalaska (DEN-DUT)

Prices were available within the past 7 days and start at $1,017 for one-way flights and $1,932 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sun, Dec 21 - Mon, Jan 5
DEN
Denver
DUT
Unalaska
$1,932 Roundtrip, found 2 days ago
$1,932
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Dec 21 from Denver to Unalaska, returning Mon, Jan 5, priced at $1,932 found 2 days ago
Delta
Sat, Dec 20 - Mon, Jan 5
DEN
Denver
DUT
Unalaska
$1,944 Roundtrip, found 2 days ago
$1,944
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Dec 20 from Denver to Unalaska, returning Mon, Jan 5, priced at $1,944 found 2 days ago
Delta
Thu, Nov 27 - Thu, Dec 11
DEN
Denver
DUT
Unalaska
$1,954 Roundtrip, found 2 days ago
$1,954
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Nov 27 from Denver to Unalaska, returning Thu, Dec 11, priced at $1,954 found 2 days ago
Delta
Mon, Dec 8 - Sun, Dec 21
DEN
Denver
DUT
Unalaska
$1,961 Roundtrip, found 2 days ago
$1,961
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Dec 8 from Denver to Unalaska, returning Sun, Dec 21, priced at $1,961 found 2 days ago
Alaska Airlines
Wed, Nov 26 - Sun, Dec 7
DEN
Denver
DUT
Unalaska
$1,968 Roundtrip, found 2 days ago
$1,968
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed, Nov 26 from Denver to Unalaska, returning Sun, Dec 7, priced at $1,968 found 2 days ago
Delta
Sun, Nov 23 - Thu, Dec 11
DEN
Denver
DUT
Unalaska
$1,971 Roundtrip, found 2 days ago
$1,971
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Nov 23 from Denver to Unalaska, returning Thu, Dec 11, priced at $1,971 found 2 days ago
Delta
Tue, Dec 2 - Wed, Dec 3
DEN
Denver
DUT
Unalaska
$1,972 Roundtrip, found 3 days ago
$1,972
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Dec 2 from Denver to Unalaska, returning Wed, Dec 3, priced at $1,972 found 3 days ago
Delta
Thu, Nov 27 - Wed, Dec 10
DEN
Denver
DUT
Unalaska
$1,973 Roundtrip, found 2 days ago
$1,973
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Nov 27 from Denver to Unalaska, returning Wed, Dec 10, priced at $1,973 found 2 days ago
Delta
Sun, Dec 21 - Sun, Jan 4
DEN
Denver
DUT
Unalaska
$1,984 Roundtrip, found 2 days ago
$1,984
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Dec 21 from Denver to Unalaska, returning Sun, Jan 4, priced at $1,984 found 2 days ago
Alaska Airlines
Wed, Nov 26 - Tue, Dec 9
DEN
Denver
DUT
Unalaska
$1,987 Roundtrip, found 2 days ago
$1,987
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed, Nov 26 from Denver to Unalaska, returning Tue, Dec 9, priced at $1,987 found 2 days ago

Frequently asked questions

How much does a flight from Denver Intl. Airport (DEN) to Unalaska Airport (DUT) cost?
Secure a cheap one-way flight from $1,017 or cheap return flight from $1,932 from Denver Intl. Airport (DEN) to Unalaska Airport (DUT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Denver Intl. Airport (DEN) to Unalaska Airport (DUT)?
The cheapest month to fly from DEN to DUT is December, when there's less demand. Off-peak season is typically when better flight deals are available between these airports.
What is the cheapest airline that flies from Denver Intl. Airport (DEN) to Unalaska Airport (DUT)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest DEN to DUT flight.
How many flights per day from Denver Intl. Airport (DEN) to Unalaska Airport (DUT)?
You'll have to take a flight with a layover when traveling from Denver Intl. Airport (DEN) to Unalaska Airport (DUT). There are no daily direct flights on this route. However, just filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from DEN to DUT?
Generally you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* But this can change based on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Denver Intl. Airport (DEN) to Unalaska Airport (DUT)?
To touch down at Unalaska Airport (DUT) without delays, select a flight that leaves from Denver Intl. Airport (DEN) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Denver Intl. Airport (DEN) to Unalaska Airport (DUT) last-minute?
Last-minute bookings from DEN to DUT are typically more expensive. To secure the lowest prices, start searching for flights well ahead of time. That said, if your travel plans are flexible, it's possible to score a cheap fare right before your journey.
Is it cheaper to book a DEN to DUT flight and hotel package?
Opting for a DEN to DUT flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Select from our impressive range of stays and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to Unalaska Airport (DUT)?
Usually, it's possible to reschedule or cancel your DEN to DUT flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Denver Intl.
Destination airport
Unalaska
Roundtrip price
$1,931
Distance
2972 mi

Book with confidence

Denver to Unalaska Flights

The cheapest times to fly from Denver to Unalaska

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to Unalaska are during the month of December. You can find some of the cheapest flights from Denver to Unalaska with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to Unalaska

Sunday is one of the best days to book for cheap flights from Denver to Unalaska: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Denver to Unalaska

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to Unalaska in 2025. You can also book with separate airlines for your outbound and return journeys, from $1,017 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to Unalaska flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Denver to Unalaska airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Denver to Unalaska Flights

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*Available to One Key members.