Cheapest return flights from Kos to Istanbul in May from $226

Best time to book flights for Kos (KGS) to Istanbul (IST) flights at AirHint

AirHint found the following cheapest return flights from Kos (KGS) to Istanbul (IST) in May 2025 (see full year).

Return flights

25 May - 29 May Aegean Airlines
26 May - 30 May Aegean Airlines
30 May - 09 Jun Aegean Airlines
31 May - 02 Jun Aegean Airlines
13 May - 18 May Aegean Airlines
11 May - 22 May Aegean Airlines
25 May - 31 May Aegean Airlines

Also check the deals for one-way flights from Kos to Istanbul in May.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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