Cheap Flights from Cologne (CGN) to Altenrhein (ACH)

Popular airlines from Cologne - Bonn Airport (CGN) to Altenrhein (ACH-St. Gallen - Altenrhein)

Frequently asked questions

How much does a flight from Cologne - Bonn Airport (CGN) to Altenrhein (ACH-St. Gallen - Altenrhein) cost?
Secure a cheap one-way flight or cheap return flight from Cologne - Bonn Airport (CGN) to Altenrhein (ACH-St. Gallen - Altenrhein) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Cologne - Bonn Airport (CGN) to Altenrhein (ACH-St. Gallen - Altenrhein)?
is the cheapest month to fly from CGN to ACH. Traveling during an off-peak travel window is often the key to finding better fares.
What is the cheapest airline that flies from Cologne - Bonn Airport (CGN) to Altenrhein (ACH-St. Gallen - Altenrhein)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest CGN to ACH flight.
How many flights per day from Cologne - Bonn Airport (CGN) to Altenrhein (ACH-St. Gallen - Altenrhein)?
Direct flights from Cologne - Bonn Airport (CGN) to Altenrhein (ACH-St. Gallen - Altenrhein) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from CGN to ACH?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*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 Altenrhein (ACH-St. Gallen - Altenrhein)?
To arrive at Altenrhein (ACH-St. Gallen - Altenrhein) on time, opt for a flight that leaves Cologne - Bonn Airport (CGN) 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 Cologne - Bonn Airport (CGN) to Altenrhein (ACH-St. Gallen - Altenrhein) last-minute?
Last-minute fares from CGN to ACH are generally more expensive. For the cheapest rates, start searching for flights as early as possible. That being said, if you're flexible with your travel dates, it's possible to find a cheap ticket right before you leave.
Can I cancel or change the date of my flight from Cologne - Bonn Airport (CGN) to Altenrhein (ACH-St. Gallen - Altenrhein)?
Usually, it's possible to reschedule or cancel your CGN to ACH flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Cologne - Bonn
Destination airport
St. Gallen - Altenrhein
Distance
259 mi

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Cologne to Altenrhein Flights

The cheapest times to fly from Cologne to Altenrhein

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

 

The best time to book a flight from Cologne to Altenrhein

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

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 Altenrhein 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 Altenrhein 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 Altenrhein 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 Altenrhein Flights

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*Available to One Key members.