Istanbul → Kastamonu flights
Last observed price · Last checked: 1 Sep 2026 · Price may change
Short answer
The lowest fare our own searches returned is €33, seen on 1 Sep 2026. The average across the fares we caught is €34. October 2026 is the cheapest month in our observations, at €33. These are prices our searches returned on the dates shown, not quotes; run a live search for today's fare.
Tickets found in the last 7 days
The lowest fares our queries caught, cheapest first.
Starting prices by month
The lowest fare our queries observed in each month. Open a month to see its days; click a day with no price and we will search it for you.
Route facts
Frequently asked
How much is a flight from Istanbul to Kastamonu?+−
The lowest fare we have observed is €33, found on 1 Sep 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Istanbul to Kastamonu?+−
In our observations October 2026 is the cheapest month so far, at €33.
We will email you when this route drops below €30.
Similar routes
More routes from Istanbul
More routes to Kastamonu
Last checked: 1 Sep 2026