$943 Cheap Flights from San Francisco (SFO) to Unalaska (DUT)

View $943 flight on Fri, Dec 26, 2025Opens in a new window

Popular airlines from San Francisco Intl. Airport (SFO) to Unalaska, AK (DUT)

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Cheap Flights from San Francisco to Unalaska (SFO-DUT)

Prices were available within the past 7 days and start at $943 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to Unalaska Airport (DUT) cost?
Snag a cheap one-way flight from $943 or cheap return flight from San Francisco Intl. Airport (SFO) 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 San Francisco Intl. Airport (SFO) to Unalaska Airport (DUT)?
Planning your trip for can help you save, as it's the cheapest month for flights between SFO and DUT. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from San Francisco Intl. Airport (SFO) to Unalaska Airport (DUT)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll take you from SFO to DUT. Then, sort your results by "Price (lowest to highest)" to snag a great deal.
How many flights per day from San Francisco Intl. Airport (SFO) to Unalaska Airport (DUT)?
You'll have to book a flight with a layover when traveling from San Francisco Intl. Airport (SFO) to Unalaska Airport (DUT). Direct flights don't operate daily on this route. However, just 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 SFO to DUT?
You'll typically 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 San Francisco Intl. Airport (SFO) to Unalaska Airport (DUT)?
To reach Unalaska Airport (DUT) on time, pick a flight that leaves from San Francisco Intl. Airport (SFO) 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 San Francisco Intl. Airport (SFO) to Unalaska Airport (DUT) last-minute?
Last-minute fares from SFO to DUT are usually more expensive. To secure the lowest prices, start looking for flights as early as possible. That said, if you're flexible with your travel plans, you may land a cheap ticket right before you leave.
Is it cheaper to book a SFO to DUT flight and hotel package?
Compared with arranging hotels and flights separately, booking a SFO to DUT flight and hotel package with Expedia could result in significant savings. Better yet, having it all in one place will take the stress out of planning your trip. Simply pick your flights and choose from our extensive range of stays, then personalize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to Unalaska Airport (DUT)?
It's generally possible to cancel or reschedule your SFO to DUT flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Unalaska
Distance
2356 mi

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San Francisco to Unalaska Flights

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

 

The best time to book a flight from San Francisco to Unalaska

Sunday is one of the best days to book for cheap flights from San Francisco 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 San Francisco 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 San Francisco to Unalaska in 2025. You can also book with separate airlines for your outbound and return journeys, from $943 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 San Francisco 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 San Francisco 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.

 

San Francisco to Unalaska Flights

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*Available to One Key members.