Cheap Flights from Sion to London

Compare Sion to London flight deals

Find the cheapest month or even day of the year to fly to London

Book the best London fare with no extra fees

Flight deals from Sion to London

Looking for a cheap last-minute deal or the best return flight from Sion to London? Find the lowest prices on one-way and return tickets right here.

Alternative Sion to London routes

Looking for the cheapest, fastest or easiest route from Sion to London? You could fly into the following airports instead.

Finding cheap flights from Sion to London: Frequently asked questions

How many airports are there in London?

There are 6 airports in London: London City, London Heathrow, London Gatwick, London Luton, London Stansted, and London Southend.

How many flights are there a week from Sion to London?

As of March 2025, there are no flights flying from Sion to London.

When is the cheapest time to fly from Sion to London?

The cheapest month to fly from Sion to London is usually March 2025.

Can I get a direct flight from Sion Airport to London?

No airlines currently offer direct flights between Sion Airport and London. Most routes have one or more stops.

How can I get the best flight deal from Sion Airport to London?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to London?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.

What’s the weather like in London?

In March, the average temperature is usually around 6°C. August is typically the warmest month in London, when it usually averages around 22°C. You can expect the least rain in March. The coldest month is January, with temperatures averaging 1°C. The rainiest month is October.

How to find cheap flights to London from Sion

Looking for cheap tickets from Sion to London? Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

Simply hit 'search'. From British Airways to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from Sion to London. And with us there are no hidden fees - what you see is what you pay.
Compare flight deals to London from Sion from over 1,000 providers. Then choose the cheapest or fastest plane tickets.
Flex your dates to find the best Sion-London ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to fly to London from Sion.
Set up a Price Alert. You can easily track the fare of your cheap Sion-London flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
Fly without stops. Only interested in direct flights between Sion and London? Make sure to tick 'Direct flights only' when performing a search. If there are direct flights available on the route, these will appear in the results.
Find the cheapest Business class flights from Sion and London. We scour the internet for the best Business, Premium Economy and First Class flight fares to London, too. Check the difference in price as you search – you might just chance upon a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
Include nearby airports in your search. Widen your search for Sion to London flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save next time you travel.

Combine your flight to London from Sion with hotels and car hire

Once you've secured your cheap flight ticket from Sion to London, discover the best prices and exclusive rates for hotels in London or nearby. You can also compare hundreds of car hire companies in one go so that you get the best car hire price for your trip.