Cheap Flights from Kastamonu to Istanbul

Cheapest flights from Kastamonu to Istanbul

Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Kastamonu to Istanbul. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.

Cheapest one way flight

$41

Turkish Airlines

Direct flight

1h 20m

05/01/2026

The cheapest one-way flight from Kastamonu to Istanbul departs on 05/01/2026, is operated by Turkish Airlines and costs $41

Cheapest round trip flight

—

There is no information about the cheapest roundtrip flight from Kastamonu to Istanbul

The fastest flight

1h 20m

Fastest flight from Kastamonu to Istanbul takes 1h 20m

Direct flights

Once a week

There are direct flights on this route 1 day a week: Fr

Earliest flight

5:05 PM

Latest flight

5:05 PM

Direct flights count

1

Distance

418km

Timezone difference

0h

The distance between Kastamonu and Istanbul is 418km (259 miles). There are 1 direct flight from Kastamonu to Istanbul. Kastamonu and Istanbul are in the same time zone. Flights from Kastamonu begin at 5:05 PM. The latest flight from Kastamonu departs at 5:05 PM

Remember that on average the ideal time to book flights is 2 months before departure!

Airfare from Kastamonu to Istanbul by month

We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from Kastamonu to Istanbul

April 2026

Lowest price

on average:

$37

Avg Price

Airlines operating on route

On the Kastamonu — Istanbul route, flights are operated only by Turkish Airlines. This simplifies the choice for passengers, as all tickets come from a single trusted carrier. Our service lets you instantly check fares for upcoming dates and find the most advantageous option. The minimum ticket price starts at $41, making this trip affordable for a wide range of travelers. To save even more, we recommend booking early and keeping an eye on promotions — Turkish Airlines regularly offers special deals.

Turkish Airlines

starting at $41

Non-stop flights from Kastamonu to Istanbul

A non-stop flight is the most convenient and comfortable way to fly from Kastamonu to Istanbul, despite the fact that sometimes flights with transfers can cost significantly less.

Kastamonu — Istanbul

KFS — IST

05/01/2026

Departure

Direct flight

TK2739

starting at $43

Schedule of direct flights from Kastamonu to Istanbul

A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Kastamonu to Istanbul:

Unable to find information about the schedule of direct flights from

Kastamonu airports overview

Kastamonu

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KFS

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Istanbul airports overview

Istanbul New Airport

•

IST

1km

Serves Istanbul as Turkey’s main international hub, offering extensive long‑haul and regional connections with modern terminals and direct rail and road links to the city.

Sabiha Gokcen International Airport

•

SAW

43km

Serves Istanbul's Asian side with domestic and international flights, popular with low-cost carriers; convenient for travelers to Pendik, Kartal and nearby ferry/road links to central Istanbul.

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Frequently asked questions (FAQ)

Answers to questions about the route that travelers are most interested in.

What is the cheapest price for flights from Kastamonu to Istanbul?

The cheapest flight ticket from Kastamonu to Istanbul according to data for the last 48 hours costs $41

When is the best time to buy air tickets on the route Kastamonu — Istanbul?

Often the best time to buy tickets from Kastamonu to Istanbul is 2 months before departure.

When is the cheapest time of year to fly from Kastamonu to Istanbul?

Based on statistics over the past years, the lowest prices for flights from Kastamonu to Istanbul can be found flying in these months: April.

How long does it take to fly from Kastamonu to Istanbul?

The fastest flights from Kastamonu to Istanbul start from 1 hour 20 minutes in the air.

Which airline can fly direct from Kastamonu to Istanbul?

The following airlines operate direct flights on the route Kastamonu — Istanbul: Turkish Airlines

Special offers and sales on air tickets from Kastamonu to Istanbul

We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.

We couldn't find any special offers for flights from Kastamonu to Istanbul

Alternative routes

Kayseri ➜ Istanbul•Eskisehir ➜ Istanbul•Istanbul ➜ Istanbul•Konya ➜ Istanbul•Kutahya ➜ Istanbul•Ordu ➜ Istanbul•Samsun ➜ Istanbul•Tokat ➜ Istanbul•Sivas ➜ Istanbul•Bursa ➜ Istanbul•Kastamonu ➜ Bucharest•Kastamonu ➜ Constanta•Kastamonu ➜ Eskisehir•Kastamonu ➜ Izmir•Kastamonu ➜ Kutahya•Kastamonu ➜ Plovdiv•Kastamonu ➜ Tekirdag•Kastamonu ➜ Varna•Kastamonu ➜ Bursa

•••••••••••••••••••

Cheapest one way flight

$41

Turkish Airlines

Direct flight

1h 20m

05/01/2026

The cheapest one-way flight from Kastamonu to Istanbul departs on 05/01/2026, is operated by Turkish Airlines and costs $41

Cheapest round trip flight

—

There is no information about the cheapest roundtrip flight from Kastamonu to Istanbul

The fastest flight