Title: Cheap Flights from Istanbul to Sion (IST to SIR) - Expedia.co.uk ![Adobe](https://images.trvl-media.com/place/9869/40df6fea-c548-4064-9088-2549769f6f5f.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/9869/40df6fea-c548-4064-9088-2549769f6f5f.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Istanbul (IST) to Sion (SIR) - [Return](?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 Add a place to stay Direct flights only ## Popular airlines from Istanbul Airport (IST) to Sion (SIR) - ![British Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.co.uk/Flights-Search?leg1=from:ist,to:sir,departure:29/09/2025TANYT&leg2=from:sir,to:ist,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![easyJet](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_U2.svg) easyJet [](https://www.expedia.co.uk/Flights-Search?leg1=from:ist,to:sir,departure:29/09/2025TANYT&leg2=from:sir,to:ist,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"U2"}}]) - ![Lufthansa](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LH.svg) Lufthansa [](https://www.expedia.co.uk/Flights-Search?leg1=from:ist,to:sir,departure:29/09/2025TANYT&leg2=from:sir,to:ist,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) - ![Ryanair](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_FR.svg) Ryanair [](https://www.expedia.co.uk/Flights-Search?leg1=from:ist,to:sir,departure:29/09/2025TANYT&leg2=from:sir,to:ist,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"FR"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:ist,to:sir,departure:29/09/2025TANYT&leg2=from:sir,to:ist,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![Jet2](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LS.svg) Jet2 [](https://www.expedia.co.uk/Flights-Search?leg1=from:ist,to:sir,departure:29/09/2025TANYT&leg2=from:sir,to:ist,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LS"}}]) - ![Swiss International Air Lines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LX.svg) Swiss International Air Lines [](https://www.expedia.co.uk/Flights-Search?leg1=from:ist,to:sir,departure:29/09/2025TANYT&leg2=from:sir,to:ist,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LX"}}]) ![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 25% 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.co.uk/login) Flight from Istanbul to Sion route information | Origin airport | Istanbul | | --- | --- | | Destination airport | Sion | | Distance | 1789 km | ## Compare flights from Istanbul to Sion easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from Istanbul to Sion. Operating between them flights per day, airlines cover the route. And fly direct, getting you to Sion in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Istanbul to Sion.   To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights.  Grab a great deal on your flight from Istanbul (IST) to Sion (SIR) The easiest way to view the best deals on flights from Istanbul to Sion today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Istanbul to Sion start at just and range up to .   To find an even better deal, try   - being flexible on your dates – midweek flights can be cheaper - looking for other airports near Istanbul and Sion - booking your flight during , the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper  Why you should book your Istanbul to Sion flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Istanbul to Sion for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.   Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.   ## Explore a world of travel with Expedia - Top Flights Destinations - Related Airlines - Cheap Flights from Other Airports - Expedia's Latest Trends ### Top Flight Destinations - [Flights to Lucerne](https://expedia.co.uk/Cheap-Flights-To-Lucerne.d4477.Travel-Guide-Flights) - [Flights to Zermatt](https://expedia.co.uk/Cheap-Flights-To-Zermatt.d4300.Travel-Guide-Flights) - [Flights to Geneva](https://expedia.co.uk/Cheap-Flights-To-Geneva.d180003.Travel-Guide-Flights) - [Flights to Grindelwald](https://expedia.co.uk/Cheap-Flights-To-Grindelwald.d4284.Travel-Guide-Flights) - [Flights to Interlaken](https://expedia.co.uk/Cheap-Flights-To-Interlaken.d6052439.Travel-Guide-Flights) - [Flights to Basel](https://expedia.co.uk/Cheap-Flights-To-Basel.d6050770.Travel-Guide-Flights) - [Flights to Lauterbrunnen](https://expedia.co.uk/Cheap-Flights-To-Lauterbrunnen.d6046756.Travel-Guide-Flights) - [Flights to Lugano](https://expedia.co.uk/Cheap-Flights-To-Lugano.d2157.Travel-Guide-Flights) - [Flights to St. Moritz](https://expedia.co.uk/Cheap-Flights-To-St-Moritz.d9898.Travel-Guide-Flights) - [Flights to Bern](https://expedia.co.uk/Cheap-Flights-To-Bern.d684.Travel-Guide-Flights) - [Flights to Montreux](https://expedia.co.uk/Cheap-Flights-To-Montreux.d4480.Travel-Guide-Flights) - [Flights to Lausanne](https://expedia.co.uk/Cheap-Flights-To-Lausanne.d4474.Travel-Guide-Flights) - [Flights to Locarno](https://expedia.co.uk/Cheap-Flights-To-Locarno.d4476.Travel-Guide-Flights) - [Flights to Ascona](https://expedia.co.uk/Cheap-Flights-To-Ascona.d6028.Travel-Guide-Flights) - [Flights to Chur](https://expedia.co.uk/Cheap-Flights-To-Chur.d4468.Travel-Guide-Flights) - [Flights to Ennetbuergen](https://expedia.co.uk/Cheap-Flights-To-Ennetbuergen.d6051793.Travel-Guide-Flights) - [Flights to Davos](https://expedia.co.uk/Cheap-Flights-To-Davos.d4469.Travel-Guide-Flights) - [Flights to Andermatt](https://expedia.co.uk/Cheap-Flights-To-Andermatt.d6023929.Travel-Guide-Flights) - [Flights to Arosa](https://expedia.co.uk/Cheap-Flights-To-Arosa.d4243.Travel-Guide-Flights) - [Flights to Pontresina](https://expedia.co.uk/Cheap-Flights-To-Pontresina.d4294.Travel-Guide-Flights) ### Related Airlines - [Turkish Airlines](https://expedia.co.uk/Turkish-Airlines-Flights.cTK.Travel-Guide-Airlines) - [Lufthansa](https://expedia.co.uk/Lufthansa-Flights.cLH.Travel-Guide-Airlines) - [KLM](https://expedia.co.uk/KLM-Flights.cKL.Travel-Guide-Airlines) - [Air France](https://expedia.co.uk/Air-France-Flights.cAF.Travel-Guide-Airlines) - [British Airways](https://expedia.co.uk/British-Airways-Flights.cBA.Travel-Guide-Airlines) - [LOT-Polish Airlines](https://expedia.co.uk/LOT-Polish-Airlines-Flights.cLO.Travel-Guide-Airlines) - [Iberia](https://expedia.co.uk/Iberia-Flights.cIB.Travel-Guide-Airlines) - [Air Serbia](https://expedia.co.uk/Air-Serbia-Flights.cJU.Travel-Guide-Airlines) - [Aegean](https://expedia.co.uk/Aegean-Flights.cA3.Travel-Guide-Airlines) - [Qatar Airways](https://expedia.co.uk/Qatar-Airways-Flights.cQR.Travel-Guide-Airlines) - [Etihad Airways](https://expedia.co.uk/Etihad-Airways-Flights.cEY.Travel-Guide-Airlines) - [Emirates](https://expedia.co.uk/Emirates-Flights.cEK.Travel-Guide-Airlines) - [Vueling Airlines](https://expedia.co.uk/Vueling-Airlines-Flights.cVY.Travel-Guide-Airlines) - [Pegasus Airlines](https://expedia.co.uk/Pegasus-Airlines-Flights.cPC.Travel-Guide-Airlines) - [Thai Airways International](https://expedia.co.uk/Thai-Airways-International-Flights.cTG.Travel-Guide-Airlines) - [Saudi Arabian Airlines](https://expedia.co.uk/Saudia-Flights.cSV.Travel-Guide-Airlines) ### Nearby Airports - [Sabiha Gokcen Intl. 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