Cheapest return flights from Seoul to Istanbul in May from $553

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

Return flights

20 May - 30 May China Southern
25 May - 01 Jun China Southern
18 May - 09 Jun China Southern
20 May - 06 Jun China Southern
17 May - 28 May China Southern
08 May - 28 May China Southern
17 May - 30 May China Southern
17 May - 01 Jun China Southern
13 May - 02 Jun China Southern
22 May - 30 May China Southern
24 May - 28 May China Southern
24 May - 30 May China Southern
22 May - 28 May China Southern
22 May - 06 Jun China Southern
31 May - 06 Jun China Southern
21 May - 27 May Air China
11 May - 17 May Air China
21 May - 05 Jun Air China
27 May - 01 Jun China Southern
22 May - 22 Jun China Southern

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

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