$900 Cheap Flights from Chicago (ORD) to Unalaska (DUT)

View $900 flight on Wed, Feb 18, 2026Opens in a new window

Popular airlines from Chicago O'Hare Intl. Airport (ORD) to Unalaska, AK (DUT)

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Cheap Flights from Chicago to Unalaska (ORD-DUT)

Prices were available within the past 7 days and start at $900 for one-way flights and $1,797 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Feb 18 - Fri, Feb 20
ORD
Chicago
DUT
Unalaska
$1,797 Roundtrip, found 1 day ago
$1,797
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Feb 18 from Chicago to Unalaska, returning Fri, Feb 20, priced at $1,797 found 1 day ago
Alaska Airlines
Sun, Jun 7 - Sat, Jun 13
ORD
Chicago
DUT
Unalaska
$2,017 Roundtrip, found 2 days ago
$2,017
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sun, Jun 7 from Chicago to Unalaska, returning Sat, Jun 13, priced at $2,017 found 2 days ago
Delta
Wed, Nov 12 - Thu, Nov 20
ORD
Chicago
DUT
Unalaska
$2,019 Roundtrip, found 2 days ago
$2,019
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Nov 12 from Chicago to Unalaska, returning Thu, Nov 20, priced at $2,019 found 2 days ago
Delta
Wed, Nov 12 - Mon, Nov 24
ORD
Chicago
DUT
Unalaska
$2,051 Roundtrip, found 2 days ago
$2,051
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Nov 12 from Chicago to Unalaska, returning Mon, Nov 24, priced at $2,051 found 2 days ago
Alaska Airlines
Wed, Feb 18 - Fri, Feb 20
ORD
Chicago
DUT
Unalaska
$2,238 Roundtrip, found 1 day ago
$2,238
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Feb 18 from Chicago to Unalaska, returning Fri, Feb 20, priced at $2,238 found 1 day ago
Alaska Airlines
Wed, Feb 18 - Fri, Feb 20
ORD
Chicago
DUT
Unalaska
$2,243 Roundtrip, found 1 day ago
$2,243
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Feb 18 from Chicago to Unalaska, returning Fri, Feb 20, priced at $2,243 found 1 day ago
Alaska Airlines
Wed, Feb 18 - Fri, Feb 20
ORD
Chicago
DUT
Unalaska
$2,246 Roundtrip, found 1 day ago
$2,246
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Feb 18 from Chicago to Unalaska, returning Fri, Feb 20, priced at $2,246 found 1 day ago
Alaska Airlines
Wed, Feb 18 - Fri, Feb 20
ORD
Chicago
DUT
Unalaska
$2,256 Roundtrip, found 1 day ago
$2,256
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Feb 18 from Chicago to Unalaska, returning Fri, Feb 20, priced at $2,256 found 1 day ago
Alaska Airlines
Wed, Feb 18 - Fri, Feb 20
ORD
Chicago
DUT
Unalaska
$2,258 Roundtrip, found 1 day ago
$2,258
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Feb 18 from Chicago to Unalaska, returning Fri, Feb 20, priced at $2,258 found 1 day ago
United
Wed, Feb 18 - Fri, Feb 20
ORD
Chicago
DUT
Unalaska
$2,678 Roundtrip, found 1 day ago
$2,678
Roundtrip
found 1 day ago
Select United flight, departing Wed, Feb 18 from Chicago to Unalaska, returning Fri, Feb 20, priced at $2,678 found 1 day ago

Alternative airports near Unalaska

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Unalaska, AK DUT. Cheapest and Closest option available. Average driving time to city center is 7 minutes. Flights from $2,288
DUT
Unalaska, AK
CheapestClosest
Average driving time to city center7 min
Flights from $2,288

Frequently asked questions

How much does a flight from O'Hare Intl. Airport (ORD) to Unalaska Airport (DUT) cost?
Snag a cheap one-way flight from $900 or cheap return flight from $1,797 from O'Hare Intl. Airport (ORD) to Unalaska Airport (DUT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from O'Hare Intl. Airport (ORD) to Unalaska Airport (DUT)?
The cheapest month to fly from ORD to DUT is February, when demand is low. Off-peak months are often when better flight deals are available between these airports.
What is the cheapest airline that flies from O'Hare Intl. Airport (ORD) to Unalaska Airport (DUT)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest ORD to DUT flight.
How many flights per day from O'Hare Intl. Airport (ORD) to Unalaska Airport (DUT)?
There are no daily direct flights available from O'Hare Intl. Airport (ORD) to Unalaska Airport (DUT). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from ORD to DUT?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from O'Hare Intl. Airport (ORD) to Unalaska Airport (DUT)?
To avoid potential delays on the O'Hare Intl. Airport (ORD) to Unalaska Airport (DUT) route, fly before 3 PM. Departures after this hour are 22% more likely to be canceled.**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 O'Hare Intl. Airport (ORD) to Unalaska Airport (DUT) last-minute?
Holding off until right before your break to book a flight from ORD to DUT generally means paying more. While you may find some last-minute discounts, there's no guarantee. Allow some flexibility in your schedule to boost your chances of landing a bargain.
Is it cheaper to book an ORD to DUT flight and hotel package?
You'll generally save money by booking an ORD to DUT flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. Once you've chosen your ideal flights and accommodations, you can add extras like car rentals, tours and activities.
Can I cancel or change the date of my flight from O'Hare Intl. Airport (ORD) to Unalaska Airport (DUT)?
If you reserved your ORD to DUT flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more details.

Travel information

Origin airport
O'Hare Intl.
Destination airport
Unalaska
Roundtrip price
$1,797
Distance
3536 mi

Book with confidence

Chicago to Unalaska Flights

The cheapest times to fly from Chicago 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 Chicago to Unalaska are during the month of February. You can find some of the cheapest flights from Chicago to Unalaska with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Chicago to Unalaska

Sunday is one of the best days to book for cheap flights from Chicago 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 Chicago 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 Chicago to Unalaska in 2025. You can also book with separate airlines for your outbound and return journeys, from $900 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 Chicago 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 Chicago 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.

 

Chicago to Unalaska Flights

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*Available to One Key members.