Cheap flights from London to Sion
Cheap return flights from London to Sion
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
Sion flight facts
What you need to know
What are the cheapest airlines?
- easyJet
- British Airways
- Ryanair
These airlines usually offer the cheapest flights from London to Sion.
What airlines fly indirectly?
- Lufthansa
- Air France
- KLM
These airlines fly from London to Sion, but you’ll have at least one layover.
How long is the flight?
2 hours 15 minutes
This is the shortest flight time from London to Sion.
Alternative flights from the UK to Sion
Check out prices for other routes
Alternative flights from London
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the London/Sion route. There are around 35 flights on any given week from the UK to Sion and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from London to Sion
Tips and advice from our flight experts
You've searched for flights from London to Sion. We've found 25 flights and compared them to give you the best offer. easyJet is, on average, the cheapest for this route, so keep an eye on them. The cheapest offer we've found is a one-way ticket for the route London to Sion on 06/07/2026 at 13:45 for £58.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 5 airlines that operate the 800 km flight from London to Sion.
To find the best offers, consider booking 2-3 months in advance. Last-minute deals can be risky. EasyJet is a popular choice for this route, with an average flight duration of 2 hours 15 minutes. After selecting an offer, fill out your information and proceed to payment. Don't forget to check our flight + hotel service to save time and money!
Other popular destinations near Sion
Where other people are flying to
