$121 Cheap Flights from Cologne (CGN) to Istanbul (IST)

View $121 flight on Sat, Oct 4, 2025Opens in a new window

Popular airlines from Cologne - Bonn Airport (CGN) to Istanbul Airport (IST)

Cheap Flights from Cologne to Istanbul (CGN-IST)

Prices were available within the past 7 days and start at $121 for one-way flights and $189 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Turkish Airlines
Thu, Nov 27 - Wed, Dec 17
CGN
Cologne
IST
Istanbul
$189 Roundtrip, found 17 hours ago
$189
Roundtrip
found 17 hours ago
Select Turkish Airlines flight, departing Thu, Nov 27 from Cologne to Istanbul, returning Wed, Dec 17, priced at $189 found 17 hours ago
Lufthansa
Thu, Feb 19 - Fri, Feb 27
CGN
Cologne
IST
Istanbul
$246 Roundtrip, found 3 hours ago
$246
Roundtrip
found 3 hours ago
Select Lufthansa flight, departing Thu, Feb 19 from Cologne to Istanbul, returning Fri, Feb 27, priced at $246 found 3 hours ago
Air Serbia
Sat, Oct 18 - Tue, Nov 4
CGN
Cologne
IST
Istanbul
$252 Roundtrip, found 17 hours ago
$252
Roundtrip
found 17 hours ago
Select Air Serbia flight, departing Sat, Oct 18 from Cologne to Istanbul, returning Tue, Nov 4, priced at $252 found 17 hours ago
British Airways
Thu, Mar 5 - Sun, Mar 8
CGN
Cologne
IST
Istanbul
$497 Roundtrip, found 4 days ago
$497
Roundtrip
found 4 days ago
Select British Airways flight, departing Thu, Mar 5 from Cologne to Istanbul, returning Sun, Mar 8, priced at $497 found 4 days ago
Aegean
Sat, Jun 27 - Sun, Jul 26
CGN
Cologne
IST
Istanbul
$881 Roundtrip, found 1 day ago
$881
Roundtrip
found 1 day ago
Select Aegean flight, departing Sat, Jun 27 from Cologne to Istanbul, returning Sun, Jul 26, priced at $881 found 1 day ago

Find the cheapest month to fly from Cologne (CGN) to Istanbul (IST)

March is typically the cheapest month to fly

From $65 - $311 per traveler.

Graph displaying average flight prices per month

Flights from Cologne (CGN) to Istanbul (IST)
Origin airport
Cologne - Bonn
Destination airport
Istanbul
Airlines serving
Aegean, Air Serbia, British Airways, Lufthansa, Turkish Airlines
Roundtrip price
$188
Distance
1224 mi
Average flight time
4 hours 20 mins

Cologne to Istanbul Flights

The cheapest times to fly from Cologne to Istanbul

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

 

The best time to book a flight from Cologne to Istanbul

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

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 Istanbul in 2025. You can also book with separate airlines for your outbound and return journeys, from $121 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 Istanbul 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 Istanbul 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.

 

Frequently asked questions

How much does a flight from Cologne - Bonn Airport (CGN) to Istanbul (IST) cost?
Get a cheap one-way flight from $121 or cheap return flight from $189 from Cologne - Bonn Airport (CGN) to Istanbul (IST) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Cologne - Bonn Airport (CGN) to Istanbul (IST)?
Traveling in November is a great way to save, as it's the cheapest month for flights between CGN and IST. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Cologne - Bonn Airport (CGN) to Istanbul (IST)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest CGN to IST flight.
How many flights per day from Cologne - Bonn Airport (CGN) to Istanbul (IST)?
You'll need to hop on a flight with a layover when traveling from Cologne - Bonn Airport (CGN) to Istanbul (IST). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from CGN to IST?
Typically you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can vary depending on the airline, season 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 Istanbul (IST)?
Book a flight from Cologne - Bonn Airport (CGN) to Istanbul (IST) that leaves before 3 PM to reduce the risk of cancellations. Departures later than this are on average 22% more likely to be canceled.**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 Istanbul (IST) last-minute?
Last-minute fares from CGN to IST are generally more expensive. For the cheapest rates, start searching for flights well in advance. That being said, if you're flexible with your travel plans, you may land a cheap ticket right before your trip.
Can I cancel or change the date of my flight from Cologne - Bonn Airport (CGN) to Istanbul (IST)?
Typically, you can modify or cancel your CGN to IST flight. However, additional fees may apply, especially if you booked more than 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you want more details, head to our Customer Service portal.

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*Available to One Key members.