$863 Cheap Flights from Ontario (ONT) to Unalaska (DUT)

View $863 flight on Fri, Sep 5, 2025Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Unalaska, AK (DUT)

Cheap Flights from Ontario to Unalaska (ONT-DUT)

Prices were available within the past 7 days and start at $863 for one-way flights and $2,133 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, Sep 1 - Mon, Sep 8
ONT
Ontario
DUT
Unalaska
$2,133 Roundtrip, found 11 hours ago
$2,133
Roundtrip
found 11 hours ago
Select Delta flight, departing Mon, Sep 1 from Ontario to Unalaska, returning Mon, Sep 8, priced at $2,133 found 11 hours ago
Alaska Airlines
Mon, Sep 1 - Mon, Sep 8
ONT
Ontario
DUT
Unalaska
$2,172 Roundtrip, found 11 hours ago
$2,172
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Mon, Sep 1 from Ontario to Unalaska, returning Mon, Sep 8, priced at $2,172 found 11 hours ago
Alaska Airlines
Mon, Sep 1 - Mon, Sep 8
ONT
Ontario
DUT
Unalaska
$2,211 Roundtrip, found 11 hours ago
$2,211
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Mon, Sep 1 from Ontario to Unalaska, returning Mon, Sep 8, priced at $2,211 found 11 hours ago
Alaska Airlines
Mon, Sep 1 - Mon, Sep 8
ONT
Ontario
DUT
Unalaska
$2,267 Roundtrip, found 11 hours ago
$2,267
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Mon, Sep 1 from Ontario to Unalaska, returning Mon, Sep 8, priced at $2,267 found 11 hours ago
Alaska Airlines
Mon, Sep 1 - Mon, Sep 8
ONT
Ontario
DUT
Unalaska
$2,494 Roundtrip, found 11 hours ago
$2,494
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Mon, Sep 1 from Ontario to Unalaska, returning Mon, Sep 8, priced at $2,494 found 11 hours ago
United
Mon, Sep 1 - Mon, Sep 8
ONT
Ontario
DUT
Unalaska
$2,520 Roundtrip, found 11 hours ago
$2,520
Roundtrip
found 11 hours ago
Select United flight, departing Mon, Sep 1 from Ontario to Unalaska, returning Mon, Sep 8, priced at $2,520 found 11 hours ago
Alaska Airlines
Mon, Sep 1 - Mon, Sep 8
ONT
Ontario
DUT
Unalaska
$2,533 Roundtrip, found 11 hours ago
$2,533
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Mon, Sep 1 from Ontario to Unalaska, returning Mon, Sep 8, priced at $2,533 found 11 hours ago
Flights from Ontario (ONT) to Unalaska (DUT)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Unalaska
Roundtrip price
$2,133
Distance
2719 mi

Ontario to Unalaska Flights

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

 

The best time to book a flight from Ontario to Unalaska

Sunday is one of the best days to book for cheap flights from Ontario 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 Ontario 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 Ontario to Unalaska in 2025. You can also book with separate airlines for your outbound and return journeys, from $863 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 Ontario 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 Ontario 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.

 

Frequently asked questions

How much does a flight from Los Angeles - Ontario Intl. Airport (ONT) to Unalaska Airport (DUT) cost?
Snag a cheap one-way flight from $863 or cheap return flight from $2,133 from Los Angeles - Ontario Intl. Airport (ONT) to Unalaska Airport (DUT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Los Angeles - Ontario Intl. Airport (ONT) to Unalaska Airport (DUT)?
Flying in September may help you find better deals, as it's the cheapest month for flights between ONT and DUT. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from Los Angeles - Ontario Intl. Airport (ONT) to Unalaska Airport (DUT)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll fly you from ONT to DUT. Then, sort your results by "Price (lowest to highest)" to snag a great deal.
How many flights per day from Los Angeles - Ontario Intl. Airport (ONT) to Unalaska Airport (DUT)?
You'll need to catch a flight with a layover when traveling from Los Angeles - Ontario Intl. Airport (ONT) to Unalaska Airport (DUT). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from ONT to DUT?
Generally you'll find the most flight options available on a Friday. Tuesdays are often the quietest.* However, 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 Los Angeles - Ontario Intl. Airport (ONT) to Unalaska Airport (DUT)?
To avoid potential delays on the Los Angeles - Ontario Intl. Airport (ONT) to Unalaska Airport (DUT) route, fly before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**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 Los Angeles - Ontario Intl. Airport (ONT) to Unalaska Airport (DUT) last-minute?
Holding off until just before your trip to book your flight from ONT to DUT generally means paying more. While you might find some last-minute deals, they aren't always guaranteed. Keep your travel plans flexible to maximize your chances of scoring a bargain.
Is it cheaper to book an ONT to DUT flight and hotel package?
Opting for an ONT to DUT flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Pick from our extensive range of stays and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to Unalaska Airport (DUT)?
If you reserved your ONT 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 type of fare 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, go to our Customer Service portal if you'd like more information.

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*Available to One Key members.