Cheap Flights from London (LGW) to Sion (SIR)

Popular airlines from Gatwick Airport (LGW) to Sion (SIR)

Frequently asked questions

How much does a flight from Gatwick Airport (LGW) to Sion Airport (SIR) cost?
Get a cheap one-way flight or cheap return flight from Gatwick Airport (LGW) 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 Gatwick Airport (LGW) to Sion Airport (SIR)?
The cheapest month to fly from LGW to SIR is , when demand is low. Off-peak season is generally when airlines offer better prices between these airports.
What is the cheapest airline that flies from Gatwick Airport (LGW) to Sion Airport (SIR)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from LGW to SIR. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from Gatwick Airport (LGW) to Sion Airport (SIR)?
You'll have to catch a flight with a layover when traveling from Gatwick Airport (LGW) to Sion Airport (SIR). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from LGW to SIR?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can change based on the season, 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 Gatwick Airport (LGW) to Sion Airport (SIR)?
To avoid potential delays on the Gatwick Airport (LGW) to Sion Airport (SIR) route, aim to travel before 3 PM. Departures after this hour 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 Gatwick Airport (LGW) to Sion Airport (SIR) last-minute?
Last-minute bookings from LGW to SIR are usually more expensive. To secure the best rates, start searching for flights as soon as possible. That being said, if you're flexible with your travel plans, it's possible to land a cheap fare right before your trip.
Is it cheaper to book a LGW to SIR flight and hotel package?
Compared with arranging flights and hotels separately, booking a LGW to SIR flight and hotel package with Expedia could lead to significant savings. Better still, managing everything in one place will take the hassle out of travel planning. Just secure your flights and select from our extensive range of hotels, then customize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Gatwick Airport (LGW) to Sion Airport (SIR)?
If you reserved your LGW to SIR flight within 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 purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

Travel information

Origin airport
Gatwick
Destination airport
Sion
Distance
482 mi

Book with confidence

London to Sion Flights

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

 

The best time to book a flight from London to Sion

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

 

London to Sion Flights

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*Available to One Key members.