$279 Cheap Flights from Kastamonu (KFS) to Istanbul (IST)

View $279 flight on Mon, Dec 22, 2025Opens in a new window

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Cheap Flights from Kastamonu to Istanbul (KFS-IST)

Prices were available within the past 7 days and start at $279 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from Kastamonu Airport (KFS) to Istanbul (IST) cost?
Snag a cheap one-way flight from $279 or cheap return flight from Kastamonu Airport (KFS) to Istanbul (IST) 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 Kastamonu Airport (KFS) to Istanbul (IST)?
Planning your getaway for can help you save, as it's the cheapest month for flights between KFS and IST. You'll typically find the lowest fares during the off-season.
What is the cheapest airline that flies from Kastamonu Airport (KFS) to Istanbul (IST)?
To find the cheapest airline that'll fly you from KFS to IST, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Kastamonu Airport (KFS) to Istanbul (IST)?
There aren't any daily nonstop flights from Kastamonu Airport (KFS) to Istanbul (IST). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from KFS to IST?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change based on a range of factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Kastamonu Airport (KFS) to Istanbul (IST)?
Select a flight from Kastamonu Airport (KFS) to Istanbul (IST) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this hour 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 Kastamonu Airport (KFS) to Istanbul (IST) last-minute?
Last-minute fares from KFS to IST are usually more expensive. For the lowest prices, start searching for flights well in advance. That said, if you're flexible with your travel plans, you may find a cheap ticket right before you leave.
Can I cancel or change the date of my flight from Kastamonu Airport (KFS) to Istanbul (IST)?
Usually, it's possible to cancel or reschedule your KFS to IST flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Kastamonu
Destination airport
Istanbul
Distance
262 mi
Average flight time
1 hour 25 mins

Book with confidence

Kastamonu to Istanbul Flights

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

 

The best time to book a flight from Kastamonu to Istanbul

Sunday is one of the best days to book for cheap flights from Kastamonu 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 Kastamonu 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 Kastamonu to Istanbul in 2026. You can also book with separate airlines for your outbound and return journeys, from $279 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 Kastamonu 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 Kastamonu 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.

 

Kastamonu to Istanbul Flights

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*Available to One Key members.