Cheap flights from Istanbul to Kastamonu
Cheapest current fares: $56 in June 2026, 422 km direct flight in ~30m.
Cheapest month-by-month fares
Lowest available fare per calendar month from Istanbul (IST) to Kastamonu (KFS). Refreshed daily.
Istanbul (IST) → Kastamonu (KFS)
- June 2026 $56
- May 2026 $63
Frequently asked questions
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What is the cheapest month to fly from Istanbul to Kastamonu?
Based on current 6-month forward fare data, June 2026 is the cheapest month to fly from Istanbul (IST) to Kastamonu (KFS), with fares starting from $56.
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What is the lowest current fare from IST to KFS?
The lowest currently-listed fare from Istanbul (IST) to Kastamonu (KFS) is $56 on 2026-06-03.
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How long is the flight from Istanbul to Kastamonu?
Direct flights from IST to KFS cover approximately 422 km (262 miles), with an estimated flight time of 30m. Operating airlines: TK.
Related guides for this route
Sibling pages — full route detail, airport overviews, visa context, per-airline routes.