$1,046 Cheap Flights from Boston (BOS) to Unalaska (DUT)

View $1,046 flight on Mon, Dec 15, 2025Opens in a new window

Popular airlines from Logan International Airport (BOS) to Unalaska, AK (DUT)

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Cheap Flights from Boston to Unalaska (BOS-DUT)

Prices were available within the past 7 days and start at $1,046 for one-way flights and $2,033 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, Dec 15 - Mon, Dec 22
BOS
Boston
DUT
Unalaska
$2,033 Roundtrip, found 6 days ago
$2,033
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Dec 15 from Boston to Unalaska, returning Mon, Dec 22, priced at $2,033 found 6 days ago
Delta
Mon, Dec 15 - Mon, Dec 22
BOS
Boston
DUT
Unalaska
$2,066 Roundtrip, found 6 days ago
$2,066
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Dec 15 from Boston to Unalaska, returning Mon, Dec 22, priced at $2,066 found 6 days ago
Alaska Airlines
Mon, Jul 13 - Tue, Jul 21
BOS
Boston
DUT
Unalaska
$2,166 Roundtrip, found 2 hours ago
$2,166
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Mon, Jul 13 from Boston to Unalaska, returning Tue, Jul 21, priced at $2,166 found 2 hours ago
Delta
Mon, Dec 15 - Mon, Dec 22
BOS
Boston
DUT
Unalaska
$2,187 Roundtrip, found 6 days ago
$2,187
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Dec 15 from Boston to Unalaska, returning Mon, Dec 22, priced at $2,187 found 6 days ago
Delta
Mon, Jul 13 - Tue, Jul 21
BOS
Boston
DUT
Unalaska
$2,190 Roundtrip, found 2 hours ago
$2,190
Roundtrip
found 2 hours ago
Select Delta flight, departing Mon, Jul 13 from Boston to Unalaska, returning Tue, Jul 21, priced at $2,190 found 2 hours ago
Hawaiian Airlines
Fri, Nov 14 - Thu, Nov 20
BOS
Boston
DUT
Unalaska
$2,224 Roundtrip, found 3 days ago
$2,224
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Fri, Nov 14 from Boston to Unalaska, returning Thu, Nov 20, priced at $2,224 found 3 days ago
Delta
Mon, Dec 15 - Mon, Dec 22
BOS
Boston
DUT
Unalaska
$2,237 Roundtrip, found 6 days ago
$2,237
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Dec 15 from Boston to Unalaska, returning Mon, Dec 22, priced at $2,237 found 6 days ago
Alaska Airlines
Mon, Dec 15 - Mon, Dec 22
BOS
Boston
DUT
Unalaska
$2,238 Roundtrip, found 6 days ago
$2,238
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Mon, Dec 15 from Boston to Unalaska, returning Mon, Dec 22, priced at $2,238 found 6 days ago
Delta
Thu, Nov 13 - Thu, Nov 20
BOS
Boston
DUT
Unalaska
$2,250 Roundtrip, found 3 days ago
$2,250
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Nov 13 from Boston to Unalaska, returning Thu, Nov 20, priced at $2,250 found 3 days ago
United
Mon, Jul 13 - Tue, Jul 21
BOS
Boston
DUT
Unalaska
$2,391 Roundtrip, found 2 hours ago
$2,391
Roundtrip
found 2 hours ago
Select United flight, departing Mon, Jul 13 from Boston to Unalaska, returning Tue, Jul 21, priced at $2,391 found 2 hours ago

Frequently asked questions

How much does a flight from Logan Intl. Airport (BOS) to Unalaska Airport (DUT) cost?
Lock in a cheap one-way flight from $1,046 or cheap return flight from $2,033 from Logan Intl. Airport (BOS) to Unalaska Airport (DUT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Logan Intl. Airport (BOS) to Unalaska Airport (DUT)?
Planning your getaway for December is a good way to save, as it's the cheapest month for flights between BOS and DUT. You'll usually find the lowest prices during the off-season.
What is the cheapest airline that flies from Logan Intl. Airport (BOS) to Unalaska Airport (DUT)?
To find the cheapest airline that'll fly you from BOS to DUT, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Logan Intl. Airport (BOS) to Unalaska Airport (DUT)?
There are no daily direct flights available from Logan Intl. Airport (BOS) to Unalaska Airport (DUT). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from BOS to DUT?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Logan Intl. Airport (BOS) to Unalaska Airport (DUT)?
To land at Unalaska Airport (DUT) on schedule, book a flight that leaves Logan Intl. Airport (BOS) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Logan Intl. Airport (BOS) to Unalaska Airport (DUT) last-minute?
Booking your flight from BOS to DUT just before your getaway is usually more expensive. But if you're flexible with your travel dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a BOS to DUT flight and hotel package?
Booking a BOS to DUT flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our extensive range of stays and then add activities, flights and car rentals 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 Logan Intl. Airport (BOS) to Unalaska Airport (DUT)?
Typically, you're able to cancel or reschedule your BOS to DUT flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like further details, visit our Customer Service portal.

Travel information

Origin airport
Logan Intl.
Destination airport
Unalaska
Roundtrip price
$2,033
Distance
4133 mi

Book with confidence

Boston to Unalaska Flights

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

 

The best time to book a flight from Boston to Unalaska

Sunday is one of the best days to book for cheap flights from Boston 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 Boston 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 Boston to Unalaska in 2025. You can also book with separate airlines for your outbound and return journeys, from $1,046 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 Boston 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 Boston 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.

 

Boston to Unalaska Flights

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*Available to One Key members.