Cheap flights from Istanbul to Kastamonu

One-way fares from $40 · IST → KFS · prices found by travellers in the last 48 hours

Compare all dates Kastamonu → Istanbul
Cheapest fare
$40

Turkish Airlines · Sun, Jan 3

Cheapest month
January

from $40

Direct flights
Yes

Turkish Airlines

Flight time
1h 20m

400 km

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Cheapest month to fly from Istanbul to Kastamonu

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 $45
  2. January 2027 Cheapest $40

Cheapest dates in January 2027

The lowest fares we've seen for each day, cheapest first.

Turkish Airlines
Depart14:00 Sun, Jan 3IST → KFS 1h 20m · Direct
$40one way, per person
View deal
See every date in January 2027 →

Plan the rest of your trip to Kastamonu

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in KastamonuCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in KastamonuTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in KastamonuPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in KastamonuCompare rental cars from major brands on EconomyBookings Compare cars →

About flights from Istanbul to Kastamonu

Istanbul (IST) and Kastamonu (KFS) are about 400 km apart. Direct flights take around 1h 20m, and recent direct fares were with Turkish Airlines. Over the next few months, one-way fares start from $40, and January 2027 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Istanbul to Kastamonu?

The cheapest one-way fare we've seen recently is $40 with Turkish Airlines, departing Sunday, January 3, 2027. Over the coming months, the lowest fare in each month ranges from $40 to $45.

What is the cheapest month to fly from Istanbul to Kastamonu?

January 2027 currently has the lowest fares, from $40 one way.

Are there direct flights from Istanbul to Kastamonu?

Yes. Recent direct fares were with Turkish Airlines.

How long is the flight from Istanbul to Kastamonu?

A direct flight takes about 1h 20m. Istanbul and Kastamonu are around 400 km apart.

Which airlines fly from Istanbul to Kastamonu?

Recent fares on this route were with Turkish Airlines.

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