Kastamonu → Istanbul flights

Kastamonu (KFS)→Istanbul (IST, SAW)

from€33

Last observed price · Last checked: 29 Aug 2026 · Price may change

Short answer

The lowest fare our own searches returned is €33, seen on 29 Aug 2026. The average across the fares we caught is €36. 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.

The Routavio differenceIs there a cheaper alternative route?€25 (€8)See alternative routes →

Selected search

Last checked: 29 Aug 2026 · Price may change

€33

Sun 4 Oct 2026

One way

Cheapest

Last checked: 29 Aug 2026 · Price may change

€33 lowest€36 average1h 20m fastest

Options found on this date

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.

Observed priceLowest monthno price observedLast checked: 29 Aug 2026

Kastamonu → IstanbulSun 4 Oct 2026 · €33

Route facts

Cheapest month

October 2026

€33

Average observed

€36

Typical duration

1h 25m

404 km

Alternative airports

SAW

Frequently asked

How much is a flight from Kastamonu to Istanbul?+

The lowest fare we have observed is €33, found on 29 Aug 2026. Prices move, so read it as a floor rather than a quote.

When is the cheapest month to fly from Kastamonu to Istanbul?+

In our observations October 2026 is the cheapest month so far, at €33.

Price alert

We will email you when this route drops below €30.

More routes from Kastamonu

Kastamonu → Izmir€70 Kastamonu → Baku€372

Last checked: 29 Aug 2026