Title: Cheap Flights from Unalaska (DUT) to Seattle (SEA) - Expedia.ca ![](https://images.trvl-media.com/place/178307/82efb684-8d05-4b09-b7ea-52d5ab4ea1ac.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178307/82efb684-8d05-4b09-b7ea-52d5ab4ea1ac.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Unalaska (DUT) to Seattle (SEA) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Unalaska, AK (DUT) to Seattle-Tacoma International Airport (SEA) - ![Air Canada](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.ca/Flights-Search?leg1=from:dut,to:sea,departure:18/11/2025TANYT&leg2=from:sea,to:dut,departure:25/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![WestJet](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WS.svg) WestJet [](https://www.expedia.ca/Flights-Search?leg1=from:dut,to:sea,departure:18/11/2025TANYT&leg2=from:sea,to:dut,departure:25/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WS"}}]) - ![Flair Airlines](https://a.travel-assets.com/air/airlines/f8_sq.svg) Flair Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:dut,to:sea,departure:18/11/2025TANYT&leg2=from:sea,to:dut,departure:25/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F8"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:dut,to:sea,departure:18/11/2025TANYT&leg2=from:sea,to:dut,departure:25/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:dut,to:sea,departure:18/11/2025TANYT&leg2=from:sea,to:dut,departure:25/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:dut,to:sea,departure:18/11/2025TANYT&leg2=from:sea,to:dut,departure:25/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![Porter Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_PD.svg) Porter Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:dut,to:sea,departure:18/11/2025TANYT&leg2=from:sea,to:dut,departure:25/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"PD"}}]) - ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Frequently asked questions ### How much is a flight from Dutch Harbour Airport to SEA? > Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip flight between Dutch Harbour Airport and SEA was . Great fares don't last long, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from DUT to Sea-Tac Airport? > Most flights can be conveniently cancelled online, but whether you are charged a fee all comes down to your airline. If you do have to cancel your break, follow the instructions in the [Customer Service Portal](https://www.expedia.ca/helpcenter). ### How do I find cheap flights from DUT to Sea-Tac Airport that have flexible change policies? > Flights from Dutch Harbour Airport to Sea-Tac Airport with flexible change policies are available with many airlines. Simply use our "No change fees" filter during your search. You'll only need to cover the cost difference between the two flights, with no extra fees to worry about. ### How far is the flight from Dutch Harbour Airport to SEA? > The flight distance between Unalaska Airport (DUT) and SEA (SEA) is 3,100 kilometres. Work your way through your travel song playlist or finish that novel and the journey will whiz by. ### Which airlines fly direct from DUT to SEA? > Unfortunately, there aren't any airlines that directly fly between DUT and Sea-Tac Airport. You'll have to book a flight with at least one stop. ### Are Unalaska Airport (DUT) to SEA flight tickets cheaper when they're purchased at the last minute? > Last-minute planners can occasionally nab a bargain, with some super cheap fares from DUT to Sea-Tac Airport emerging a few weeks before the date of departure. If you'd rather plan ahead, Expedia compares and updates all the best flight deals continuously — as early as 12 months in advance in some cases. It depends on the carrier though, as not every airline releases prices that far in advance. ## Travel information | Origin airport | Unalaska | | --- | --- | | Destination airport | Seattle - Tacoma Intl. | | Distance | 3125 km | ## Book with confidence ### Unalaska to Seattle Flights **The easy way to book your flights from Unalaska to Seattle**  With Expedia, it’s simple to find and book flights to Seattle from Unalaska whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from airlines that cover this route. There are nonstop flights to Seattle - Tacoma Intl., too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Unalaska to Seattle today, tomorrow, or this week.   **Save dollars with cheap flights from Unalaska, DUT to Seattle - Tacoma Intl., SEA**  Sort your search results by price to find great deals on your flight from Unalaska to Seattle—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Seattle from Unalaska currently is just rising to .   Here are more money-saving tips:  - Fly in when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Seattle   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to Seattle from Unalaska**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. 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