Title: Cheap Flights to Koster Islands - Expedia.ca ![Summer at Koster island can be great!](https://images.trvl-media.com/place/6162102/3af68cc7-02c9-4df1-a0cb-244c49d5306b.jpg?impolicy=fcrop&w=1200&h=500&q=medium) Photo by Travel with all senses ![](https://a.travel-assets.com/travel-assets-manager/fallback-images-brand/bex_flights_v2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights to Koster Islands - [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 [Koster Islands Travel Guide](https://expedia.ca/Koster-Islands.dx6162102)[Hotels in Koster Islands](https://expedia.ca/Koster-Islands-Hotels.d6162102.Travel-Guide-Hotels)[Koster Islands Car Rentals](https://expedia.ca/Car-Rentals-In-Koster-Islands.d6162102.Car-Rental-Guide)[Koster Islands Vacation Packages](https://expedia.ca/Koster-Islands.d6162102.Destination-Travel-Guides) ## Popular airlines - ![FlexFlight](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_W2.svg) FlexFlight [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Koster Islands, Västra Götaland County, Sweden,departure:08/10/2025TANYT&leg2=from:Koster Islands, Västra Götaland County, Sweden,to:CMH,departure:15/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"W2"}}]) ![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) Expedia.ca gives you the best tools to secure great deals on flights to Koster Islands. Use our easy and convenient booking engine to browse nonstop flights and convenient departure points every day of the year. Search airfares from the top airlines to book your perfect flight to Koster Islands. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to Koster Islands. Using our booking engine is simple - just type in your points of travel and preferred dates and Expedia.ca does the rest! If your travel times are flexible, you can find even better bargains by adjusting your flight dates. Browse connecting flights to increase your chances of finding even lower fares. Thanks to Expedia's Best Price Guarantee, you can book your Koster Islands flights with full confidence knowing that you've found the best deal online. Expedia.ca makes the booking process easy and stress-free by offering support along the entire way. Our friendly staff is available 24 hours a day to provide assistance and help you book your ticket. Call us toll-free at 1-888-397-3342 to answer any questions that you may have about your trip to Koster Islands. Looking to save even more? Get additional savings by bundling your Koster Islands flight with a hotel and/or car rental to create a bargain travel package. Early birds can discover terrific savings by booking in advance while last minute travelers can enjoy great last minute deals. With Expedia.ca, there's no shortage of options to save even more on your Koster Islands trip! Flights to Koster Islands information | Destination airport | Koster Islands | | --- | --- | | Destination airport IATA code | THN | ## Need more than a Flight to Koster Islands? Heading to Koster Islands? Explore Koster Islands with Expedia's Travel Guides to find the best hotels, vacation packages, car rental deals and more! [Koster Islands Hotels](https://expedia.ca/Koster-Islands-Hotels.d6162102.Travel-Guide-Hotels)[Koster Islands Vacation Rentals](https://expedia.ca/Koster-Islands-Vacation-Rentals.d6162102.Travel-Guide-VacationRentals)[Koster Islands Car Rentals](https://expedia.ca/Car-Rentals-In-Koster-Islands.d6162102.Car-Rental-Guide)[Koster Islands Vacations](https://expedia.ca/Koster-Islands.d6162102.Destination-Travel-Guides) ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars ### Lodging - [B&B in Bohus-Malmon](https://www.expedia.ca/Bohus-Malmon-Bed-And-Breakfast.d6357890-aaBedAndBreakfast.Travel-Guide-Accommodation) - [Bohus-Malmon Hotels](https://www.expedia.ca/Bohus-Malmon-Hotels.d6357890.Travel-Guide-Hotels) - [B&B in Bohuslän](https://www.expedia.ca/Bohuslan-Bed-And-Breakfast.d3000394167-aaBedAndBreakfast.Travel-Guide-Accommodation) - [Guest Houses in Bohuslän](https://www.expedia.ca/Bohuslan-Guest-Houses.d3000394167-aaGuestHouses.Travel-Guide-Accommodation) - [Beach Hotel Hotels in Bohuslän](https://www.expedia.ca/Bohuslan-Hotels-Beach-Hotel.0-0-d3000394167-tBeachHotel.Travel-Guide-Filter-Hotels) - 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[Visit Lysekil](https://www.expedia.ca/Lysekil.dx6141553) - [Visit Nosund](https://www.expedia.ca/Nosund.dx6351586) - [Visit Smogen](https://www.expedia.ca/Smogen.dx6305835) - [Visit Sotenäs Municipality](https://www.expedia.ca/Sotenas-Municipality.dx553248635975749835) - [Visit Stromstad](https://www.expedia.ca/Stromstad.dx6128592) - [Visit Tanum](https://www.expedia.ca/Tanum.dx6127148) ### Cars - [Car rentals near Bohuslän](https://www.expedia.ca/Car-Rentals-In-Bohuslan.d3000394167.Car-Rental-Guide) - [Car rental Uddevalla](https://www.expedia.ca/Car-Rentals-In-Uddevalla.d602931.Car-Rental-Guide) - [Convertible Car Rentals in Hållö](https://www.expedia.ca/Convertible-Car-Rentals-In-Hallo.d553248635964611784-tConvertible.Car-Rental-Guide-Class) - [Rent A Wreck Rental Cars in Hållö](https://www.expedia.ca/Rent-A-Wreck-Car-Rentals-In-Hallo.d553248635964611784-c33.Car-Rental-Guide-Suppliers) - [Sixt Rental Cars in Bohuslän](https://www.expedia.ca/Sixt-Car-Rentals-In-Bohuslan.d3000394167-c35.Car-Rental-Guide-Suppliers) \*Available to Expedia members.