Title: Cheap Flights from London (LHR) to Sion (SIR) - Expedia.ca ![Adobe](https://images.trvl-media.com/place/9869/40df6fea-c548-4064-9088-2549769f6f5f.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/9869/40df6fea-c548-4064-9088-2549769f6f5f.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from London (LHR) to Sion (SIR) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Heathrow Airport (LHR) to Sion (SIR) - ![Air Canada](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:sir,departure:26/10/2025TANYT&leg2=from:sir,to:lhr,departure:02/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![WestJet](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WS.svg) WestJet [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:sir,departure:26/10/2025TANYT&leg2=from:sir,to:lhr,departure:02/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WS"}}]) - ![Flair Airlines](https://a.travel-assets.com/air/airlines/f8_sq.svg) Flair Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:sir,departure:26/10/2025TANYT&leg2=from:sir,to:lhr,departure:02/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F8"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:sir,departure:26/10/2025TANYT&leg2=from:sir,to:lhr,departure:02/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:sir,departure:26/10/2025TANYT&leg2=from:sir,to:lhr,departure:02/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:sir,departure:26/10/2025TANYT&leg2=from:sir,to:lhr,departure:02/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![Porter Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_PD.svg) Porter Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:sir,departure:26/10/2025TANYT&leg2=from:sir,to:lhr,departure:02/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"PD"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) Flight from London to Sion (LHR - SIR) route information | Origin airport | Heathrow | | --- | --- | | Destination airport | Sion | | Distance | 810 km | ## London to Sion Flights **The easy way to book your flights from London to Sion**  With Expedia, it’s simple to find and book flights to Sion from London whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from airlines that cover this route. There are nonstop flights to Sion, too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from London to Sion today, tomorrow, or this week.   **Save dollars with cheap flights from Heathrow, LHR to Sion, SIR**  Sort your search results by price to find great deals on your flight from London to Sion—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Sion from London currently is just rising to .   Here are more money-saving tips:  - Fly in when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Sion   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to Sion from London**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Sion with Expedia today. ## Frequently asked questions ### How much is a flight from LHR to Sion Airport (SIR)? > If you're planning on travelling from LHR to Sion Airport (SIR), round-trip journeys start from . This figure is based on fares advertised within the last 7 days on Expedia for flights departing within the next year, so don't hang about. Book today and save yourself money and time. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Heathrow Airport (LHR) to Sion Airport? > Each air carrier has its own set of terms and conditions. If you do decide to cancel, follow the simple instructions on our [Customer Service Portal](https://www.expedia.ca/helpcenter). ### How do I find cheap flights from London Heathrow to SIR that have flexible change policies? > Plenty of carriers will allow you to move your flight without a change fee. All you pay is the difference in the ticket price. When looking for London Heathrow to Sion Airport (SIR) flights, you'll see a "No change fees" box for you to tick. ### How far is the flight from Heathrow Airport to Sion Airport? > That movie you've been eager to see will just have to wait — the flight distance between LHR and SIR is only 820 kilometres. The captain will be asking you to put your seat upright for touchdown before you know it. ### Which airlines fly direct from Heathrow Airport to Sion Airport (SIR)? > You won't find any airlines operating directly between Heathrow Airport and SIR, so be ready to make at least one stop on your journey. A layover, whether short or long, can be a good way to break up a trip! ### Are LHR to Sion Airport (SIR) flight tickets cheaper when they're purchased at the last minute? > Flight prices always go up and down, so not always. While last-minute flight deals between LHR and Sion Airport (SIR) are possible, it's also a good idea to keep a close eye on prices well before you fly. In fact, some carriers announce their prices up to 12 months ahead of the departure date. Expedia is continuously updating the best airfare bargains around, so check back often and be ready to secure your seat when fare prices drop. ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars - Vacation Rental - Other ### Lodging - [1 Star Hotels in Les Collons](https://www.expedia.ca/1Star-Les-Collons-Hotels.s10-0-d6341088.Travel-Guide-Filter-Hotels) - [4 Star Hotels in Nendaz](https://www.expedia.ca/4Star-Nendaz-Hotels.s40-0-d6126465.Travel-Guide-Filter-Hotels) - [Anzère Hotels](https://www.expedia.ca/Anzere-Hotels.d6126491.Travel-Guide-Hotels) - [Arbaz Hotels](https://www.expedia.ca/Arbaz-Hotels.d6341004.Travel-Guide-Hotels) - [Villas in Arbaz](https://www.expedia.ca/Arbaz-Villas.d6341004-aaVillas.Travel-Guide-Accommodation) - [Ardon Hotels](https://www.expedia.ca/Ardon-Hotels.d6191908.Travel-Guide-Hotels) - [Ayent Hotels](https://www.expedia.ca/Ayent-Hotels.d6143584.Travel-Guide-Hotels) - [Chalais Hotels](https://www.expedia.ca/Chalais-Hotels.d6141591.Travel-Guide-Hotels) - 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