Cheap Flights from Istanbul (IST) to Sion (SIR)

Popular airlines from Istanbul Airport (IST) to Sion (SIR)

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Frequently asked questions

How much does a flight from Istanbul (IST) to Sion Airport (SIR) cost?
Lock in a cheap one-way flight or cheap return flight from Istanbul (IST) to Sion Airport (SIR) 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 Istanbul (IST) to Sion Airport (SIR)?
Traveling in can help you save, as it's the cheapest month for flights between IST and SIR. You'll typically find the lowest prices during the off-season.
What is the cheapest airline that flies from Istanbul (IST) to Sion Airport (SIR)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll take you from IST to SIR. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Istanbul (IST) to Sion Airport (SIR)?
You'll need to take a flight with a layover if you're traveling from Istanbul (IST) to Sion Airport (SIR). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from IST to SIR?
Usually you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* But this can change based on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Istanbul (IST) to Sion Airport (SIR)?
To avoid possible delays on the Istanbul (IST) to Sion Airport (SIR) route, aim to travel before 3 PM. Later departures are 22% more likely to be canceled.**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 Istanbul (IST) to Sion Airport (SIR) last-minute?
Booking your plane ticket from IST to SIR right before your trip is usually more expensive. But if you're flexible with your itinerary, you could land a cheap last-minute fare.
Is it cheaper to book an IST to SIR flight and hotel package?
Compared with arranging flights and hotels separately, booking an IST to SIR flight and hotel package with Expedia could result in significant savings. What's more, having it all in one place takes the hassle out of planning your trip. Just secure your flights and choose from our extensive range of stays, then customize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Istanbul (IST) to Sion Airport (SIR)?
In most cases, you're able to reschedule or cancel your IST to SIR flight. However, additional charges may apply, especially if you booked over 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you want more details, head to our Customer Service portal.

Travel information

Origin airport
Istanbul
Destination airport
Sion
Distance
1118 mi

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Istanbul to Sion Flights

The cheapest times to fly from Istanbul to Sion

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 Istanbul to Sion are during the month of . You can find some of the cheapest flights from Istanbul to Sion with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Istanbul to Sion

Sunday is one of the best days to book for cheap flights from Istanbul to Sion: 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 Istanbul to Sion

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 Istanbul to Sion in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 Istanbul to Sion 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 Istanbul to Sion 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.

 

Istanbul to Sion Flights

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*Available to One Key members.