Cheapest return flights from Kos to Istanbul in April from $249

AirHint found the following cheapest return flights from Kos (KGS) to Istanbul (IST) in April 2026 (see full year).

Return flights

02 Apr - 06 Apr SKY express
03 Apr - 19 Apr Aegean Airlines
02 Apr - 05 Apr SKY express
03 Apr - 08 Apr Aegean Airlines
19 Apr - 21 Apr SKY express
13 Apr - 20 Apr Aegean Airlines
30 Apr - 03 May SKY express

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

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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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