How to get from Kastamonu to Istanbul
- 404 km as the crow flies
- Fastest: flight, 1h 30m
- 9 bus departures a day with FlixBus
Compare the train, bus and flight options. Then check them for your own date.
At a glance
Fastest
1h 20m
direct
Flight
€63
Cheapest
6h 50m
direct
Bus
€28
Calculated by Routavio, refreshed 12 Oct 2026
Start with the whole journey.
We compared the ways to travel from Kastamonu to Istanbul. The most useful option is a flight; the flight itself takes 1h 30m, not counting the trip to and from the airports. The two cities are about 404 km apart in a straight line. The price and operators below come from a real route search.
The lowest we recorded in the last 14 days was €25, on Sat, Oct 3.
404 km
Which way suits you?
| Transport | Observed fare | Duration and scope | Detail |
|---|---|---|---|
| Flight | €35Checked Oct 10 | 1h 30mFlight only | See Flight details |
| Bus | €28Reading date not recorded | 6h 50mdirect | See Bus details |
- Flight€35Checked Oct 101h 30m · Flight onlySee Flight details
- Bus€28Reading date not recorded6h 50m · directSee Bus details
These figures were observed on different days. This table is not a live price ranking for your date.
Kastamonu to Istanbul: cheapest or fastest?
All from the same recent search. Pick a tab: the legs, the timing and the difference from the others all change with it.
- 1Kastamonu Airport → Istanbul Airportflight
Turkish Airlines·1h 30m
The best balance of price and time we found on this route.
Which date should you go?
The amounts on each day are fares seen earlier, not live offers. A day with no figure is one we have not priced, not one without a service.
- Tue, Oct 13€28
- Wed, Oct 14€28
- Thu, Oct 15€28
- Fri, Oct 16€28
- Sat, Oct 17€28
- Sun, Oct 18€28
- Mon, Oct 19€28
- Tue, Oct 20€26Cheapest found
- Wed, Oct 21€28
- Thu, Oct 22€28
- Fri, Oct 23€28
- Sat, Oct 24€28
- Sun, Oct 25€28
- Mon, Oct 26€28
- Tue, Oct 27€28
- Wed, Oct 28€28
- Thu, Oct 29€28
- Fri, Oct 30€28
- Sat, Oct 31€28
- Sun, Nov 1€28
- Mon, Nov 2€28
Departures from Kastamonu to Istanbul
FlixBus runs 9 scheduled departures a day, the first at 06:00 and the last at 23:59.
| Operator | Departures a day | First | Last |
|---|---|---|---|
| FlixBusbus | 9 | 06:00 | 23:59 |
| Metro Turizmbus | 21 | — | — |
| Ali Osman Ulusoy, Lider Vip Travel, Turkay Turizmbus | 8 | — | — |
All departuresFlixBus
- 06:00
- 09:00
- 11:00
- 12:00
- 14:00
- 20:00
- 20:59
- 23:00
- 23:59
Departure times come from operator timetables and are local time at the origin. Where a row shows no times, the frequency is the operator's own and the timetable is not published to us. Times can change on holidays and at short notice; confirm with the operator before you travel.
Departure and arrival
Operators seen on these journeys
Turkish AirlinesKastamonu Airport-Istanbul AirportSee live options and dates →
FlixBusKastamonu-İstanbul DudulluBook →On this route you travel with Turkish Airlines, FlixBus; Routavio does not add a booking fee.
How the trip from Kastamonu to Istanbul works
Start with a Turkish Airlines flight from Kastamonu to Istanbul, about 1h 30m. In total it's roughly €35 over 1h 30m, direct, no transfers.
Kastamonu to Istanbul: common questions
How long does it take to get from Kastamonu to Istanbul?
The most useful option is a flight; the flight itself takes about 1h 30m. Getting to and from the airports is on top of that.
When is the first bus from Kastamonu to Istanbul?
The first bus with FlixBus leaves at 06:00 and the last at 23:59, according to the published timetable.
How many bus departures a day are there from Kastamonu to Istanbul?
9 a day with FlixBus, between 06:00 and 23:59.
How far is Istanbul from Kastamonu?
About 404 km in a straight line. The real route on the ground or in the air is longer.
How much does Kastamonu to Istanbul cost?
On the upcoming dates we checked, the cheapest fare ranged from €26 to €28. Run a live search for your own date to see today's price.
Are there direct flights from Kastamonu to Istanbul?
Yes. The best option we found flies without a transfer and takes about 1h 30m.
How long is the flight from Kastamonu to Istanbul?
About 1h 30m, and that is the flight itself. Getting to and from the airports is on top of it.
What are the airport codes for Kastamonu and Istanbul?
Kastamonu is KFS and Istanbul is IST, so this route is usually written KFS to IST.
Which operators run Kastamonu to Istanbul?
On this route you travel with Turkish Airlines, FlixBus.
Can you get from Kastamonu to Istanbul without flying?
Yes. A ground route by bus takes about 6h 50m.
What is the cheapest way to get from Kastamonu to Istanbul?
Usually a flexible date, or leaving from a nearby airport. A live search puts every option for your dates side by side.
Can I book directly?
Yes. Routavio sends you straight to the operator or an independent third-party provider. We never add a booking fee. The final fare and availability are confirmed by that provider.
Other ways people search Kastamonu to Istanbul
- how to get from Kastamonu to Istanbul
- Kastamonu to Istanbul travel time
- Kastamonu to Istanbul distance
- cheapest way from Kastamonu to Istanbul
- Kastamonu to Istanbul flight time
- flights from Kastamonu to Istanbul
- Kastamonu Istanbul direct flights
- KFS to IST
- Kastamonu to Istanbul by bus
Sources and method
Routes are calculated by Routavio's multimodal engine from operator timetables and flight data. Durations come from timetables, and prices are the most recent observation, not a guarantee.
Operators: Turkish Airlines
Route calculated: 12 Oct 2026
Prices checked: 11 Oct 2026