Cheap Flights from Cologne (CGN) to Sion (SIR)

Popular airlines from Cologne - Bonn Airport (CGN) to Sion (SIR)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Frequently asked questions

How much does a flight from Cologne - Bonn Airport (CGN) to Sion Airport (SIR) cost?
Get a cheap one-way flight or cheap return flight from Cologne - Bonn Airport (CGN) to Sion Airport (SIR) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Cologne - Bonn Airport (CGN) to Sion Airport (SIR)?
is the least expensive month to fly from CGN to SIR. Avoiding peak travel times is often the key to landing a great deal.
What is the cheapest airline that flies from Cologne - Bonn Airport (CGN) to Sion Airport (SIR)?
To find the cheapest airline flying from CGN to SIR, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Cologne - Bonn Airport (CGN) to Sion Airport (SIR)?
You'll have to hop on a flight with a layover when traveling from Cologne - Bonn Airport (CGN) to Sion Airport (SIR). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from CGN to SIR?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But 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 Cologne - Bonn Airport (CGN) to Sion Airport (SIR)?
To arrive at Sion Airport (SIR) on schedule, opt for a flight that leaves from Cologne - Bonn Airport (CGN) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Cologne - Bonn Airport (CGN) to Sion Airport (SIR) last-minute?
Last-minute bookings from CGN to SIR are usually more expensive. To secure the lowest prices, start searching for flights early. That being said, if you're flexible with your travel dates, it's possible to find a cheap ticket right before you leave.
Is it cheaper to book a CGN to SIR flight and hotel package?
You'll typically save money by securing a CGN to SIR flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. Once you've selected your ideal accommodations and flights, you can add extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from Cologne - Bonn Airport (CGN) to Sion Airport (SIR)?
If you booked your CGN to SIR flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after 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 want more information.

Travel information

Origin airport
Cologne - Bonn
Destination airport
Sion
Distance
322 mi

Book with confidence

Cologne to Sion Flights

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

 

The best time to book a flight from Cologne to Sion

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

 

Cologne to Sion Flights

Explore a world of travel with Expedia

*Available to One Key members.