Cheap Flights from Oslo (OSL) to Sion (SIR)

Popular airlines from Gardermoen Airport (OSL) to Sion (SIR)

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Frequently asked questions

How much does a flight from Gardermoen Airport (OSL) to Sion Airport (SIR) cost?
Secure a cheap one-way flight or cheap return flight from Gardermoen Airport (OSL) to Sion Airport (SIR) 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 Gardermoen Airport (OSL) to Sion Airport (SIR)?
The cheapest month to fly from OSL to SIR is , when there's less demand. Off-peak months are often when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Gardermoen Airport (OSL) to Sion Airport (SIR)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from OSL to SIR. Then, sort your results by "Price (lowest to highest)" to snag a great deal.
How many flights per day from Gardermoen Airport (OSL) to Sion Airport (SIR)?
Nonstop flights from Gardermoen Airport (OSL) to Sion Airport (SIR) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from OSL to SIR?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary 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 Gardermoen Airport (OSL) to Sion Airport (SIR)?
Book a flight from Gardermoen Airport (OSL) to Sion Airport (SIR) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Later departures have a 22% higher chance of being canceled, on average.**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 Gardermoen Airport (OSL) to Sion Airport (SIR) last-minute?
Holding off until right before your break to book a ticket from OSL to SIR often results in higher prices. While you may come across some last-minute offers, they're not always guaranteed. Be flexible with your travel plans to boost your chances of getting a bargain.
Is it cheaper to book an OSL to SIR flight and hotel package?
Securing an OSL to SIR flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our wide range of stays and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Gardermoen Airport (OSL) to Sion Airport (SIR)?
If you reserved your OSL to SIR flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of ticket you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

Travel information

Origin airport
Gardermoen
Destination airport
Sion
Distance
977 mi

Book with confidence

Oslo to Sion Flights

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

 

The best time to book a flight from Oslo to Sion

Sunday is one of the best days to book for cheap flights from Oslo 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 Oslo 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 Oslo 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 Oslo 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 Oslo 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.

 

Oslo to Sion Flights

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*Available to One Key members.