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

Popular airlines from Istanbul Airport (IST) to Kastamonu (KFS)

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Cheap Flights from Istanbul to Kastamonu (IST-KFS)

Prices were available within the past 7 days and start at for one-way flights and $537 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Turkish Airlines
Thu, Aug 7 - Thu, Aug 14
IST
Istanbul
KFS
Kastamonu
$537 Roundtrip, found 1 day ago
$537
Roundtrip
found 1 day ago
Select Turkish Airlines flight, departing Thu, Aug 7 from Istanbul to Kastamonu, returning Thu, Aug 14, priced at $537 found 1 day ago
Flights from Istanbul (IST) to Kastamonu (KFS)
Origin airport
Istanbul
Destination airport
Kastamonu
Airlines serving
Turkish Airlines
Roundtrip price
$537
Distance
262 mi
Average flight time
1 hour 17 mins

Istanbul to Kastamonu Flights

The cheapest times to fly from Istanbul to Kastamonu

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

 

The best time to book a flight from Istanbul to Kastamonu

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

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 Istanbul to Kastamonu 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 Istanbul to Kastamonu 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 Istanbul to Kastamonu 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 Istanbul (IST) to Kastamonu Airport (KFS) cost?
Cheap round-trip fares from Istanbul (IST) to Kastamonu Airport (KFS) start from $537. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Turkish Airlines flight leaving IST on August 14 2025 and touching down at KFS. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from IST to KFS?
The cheapest flights from IST to KFS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Istanbul (IST) to Kastamonu Airport (KFS)?
You can't catch a nonstop flight from Istanbul (IST) to Kastamonu Airport (KFS). However, you can easily journey to Kastamonu without any layovers by departing from Ataturk Intl. Airport (IST).
What is the cheapest airline that flies from IST to KFS?
With prices starting from $282 for a one-way journey from IST to KFS, Turkish Airlines is currently the cheapest airline for this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from IST on August 2 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Istanbul (IST) to Kastamonu Airport (KFS)?
You'll need to take a flight with a layover when traveling from Istanbul (IST) to Kastamonu Airport (KFS). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from IST to KFS?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change depending on various factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Istanbul (IST) to Kastamonu Airport (KFS)?
To reach Kastamonu Airport (KFS) without delays, choose a flight that takes off from Istanbul (IST) before 3 PM. The likelihood 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 Istanbul (IST) to Kastamonu Airport (KFS) last-minute?
Booking your ticket from IST to KFS shortly before your journey is usually more expensive. However, if you're flexible with your travel dates and times, you could land a cheap last-minute fare.
Is it cheaper to book an IST to KFS flight and hotel package?
You'll generally save money by securing an IST to KFS flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. After choosing your ideal flights and accommodations, consider adding extras including tours, activities and car rentals.
Can I cancel or change the date of my flight from Istanbul (IST) to Kastamonu Airport (KFS)?
Generally, it's possible to reschedule or cancel your IST to KFS flight. However, if it's been more than 24 hours since booking, additional charges 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 information on our Customer Service portal.

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