Popular airlines from Brussels Airport (BRU) to Sion (SIR)

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Frequently asked questions

How much does a flight from Brussels - National Airport (BRU) to Sion Airport (SIR) cost?
Grab a cheap one-way flight or cheap return flight from Brussels - National Airport (BRU) 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 Brussels - National Airport (BRU) to Sion Airport (SIR)?
Flying in can help you save, as it's the cheapest month for flights between BRU and SIR. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from Brussels - National Airport (BRU) to Sion Airport (SIR)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest BRU to SIR flight.
How many flights per day from Brussels - National Airport (BRU) to Sion Airport (SIR)?
Direct flights from Brussels - National Airport (BRU) to Sion Airport (SIR) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BRU to SIR?
Generally you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the airline, time of year 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 Brussels - National Airport (BRU) to Sion Airport (SIR)?
To reach Sion Airport (SIR) without delays, pick a flight that leaves Brussels - National Airport (BRU) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Brussels - National Airport (BRU) to Sion Airport (SIR) last-minute?
Holding off until right before your break to book a ticket from BRU to SIR generally means paying more. While it's possible to find some last-minute offers, they're not always guaranteed. Keep your travel plans flexible to boost your chances of landing a bargain.
Is it cheaper to book a BRU to SIR flight and hotel package?
Compared with arranging flights and hotels separately, booking a BRU to SIR flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place will take the stress out of travel planning. Simply secure your flights and choose from our wide range of hotels, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Brussels - National Airport (BRU) to Sion Airport (SIR)?
If you booked your BRU to SIR flight within the last 24 hours, you may be able to cancel or modify it without any fees. 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, head to our Customer Service portal if you'd like more information.

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Brussels to Sion Flights

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

 

The best time to book a flight from Brussels to Sion

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

 

Brussels to Sion Flights

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*Available to One Key members.