Cheap Flights from Cologne (CGN) to Siena (SAY)

Popular airlines from Cologne - Bonn Airport (CGN) to Ampugnano Airport (SAY)

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Frequently asked questions

How much does a flight from Cologne - Bonn Airport (CGN) to Siena (SAY-Ampugnano) cost?
Get a cheap one-way flight or cheap return flight from Cologne - Bonn Airport (CGN) to Siena (SAY-Ampugnano) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Cologne - Bonn Airport (CGN) to Siena (SAY-Ampugnano)?
Planning your trip for is a good way to save, as it's the cheapest month for flights between CGN and SAY. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from Cologne - Bonn Airport (CGN) to Siena (SAY-Ampugnano)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll fly you from CGN to SAY. Then, sort your results by "Price (lowest to highest)" to score a great deal.
How many flights per day from Cologne - Bonn Airport (CGN) to Siena (SAY-Ampugnano)?
There are no daily direct flights available from Cologne - Bonn Airport (CGN) to Siena (SAY-Ampugnano). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way in no time.
What day of the week has the most flights from CGN to SAY?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*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 Siena (SAY-Ampugnano)?
To avoid possible delays on the Cologne - Bonn Airport (CGN) to Siena (SAY-Ampugnano) route, travel before 3 PM. Later departures have a 22% higher chance of cancellation.**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 Siena (SAY-Ampugnano) last-minute?
Last-minute fares from CGN to SAY are generally more expensive. To lock in the best rates, start searching for flights well in advance. That said, if you're flexible with your travel plans, it's possible to find a cheap fare right before your trip.
Can I cancel or change the date of my flight from Cologne - Bonn Airport (CGN) to Siena (SAY-Ampugnano)?
If you booked your CGN to SAY flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for further details.

Travel information

Travel information

Origin airport
Cologne - Bonn
Destination airport
Ampugnano
Distance
561 mi

Book with confidence

Book with confidence

Cologne to Siena Flights

The cheapest times to fly from Cologne to Siena

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

 

The best time to book a flight from Cologne to Siena

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

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 Siena 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 Siena 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 Siena 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 Siena Flights

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*Available to One Key members.