Cheapest return GMP–IST flights, May

AirHint found the following cheapest return flights from Seoul (GMP) to Istanbul (IST) in May 2026 (see full year).

Return flights

25 May - 01 Jun China Southern
27 May - 02 Jun China Southern
22 May - 30 May China Southern
24 May - 09 Jun China Southern
24 May - 11 Jun China Southern
27 May - 30 May China Southern
24 May - 30 May China Southern
25 May - 28 May China Southern
22 May - 02 Jun China Southern
27 May - 13 Jun China Southern
27 May - 09 Jun China Southern
27 May - 16 Jun China Southern
22 May - 26 May China Southern
29 May - 06 Jun China Southern
22 May - 25 May China Southern
20 May - 24 May China Southern
29 May - 08 Jun China Southern
23 May - 30 May Parata Air
27 May - 31 May Korean Air
26 May - 30 May ANA

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

Powered by

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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul

Feel free to contact us with any feedback or request another flight research.