Cheapest return flights from Seoul to Istanbul in May from $366

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

Return flights

18 May - 29 May China Southern
11 May - 15 May China Southern
18 May - 31 May China Southern
11 May - 29 May China Southern
11 May - 05 Jun China Southern
18 May - 05 Jun China Southern
18 May - 12 Jun China Southern
03 May - 19 May China Southern
09 May - 26 May China Southern
18 May - 26 May China Southern
17 May - 29 May China Southern
13 May - 26 May China Southern
16 May - 29 May China Southern
09 May - 04 Jun China Southern
14 May - 05 Jun China Southern
14 May - 11 Jun China Southern
14 May - 04 Jun China Southern
18 May - 06 Jun China Southern
22 May - 02 Jun China Southern
25 May - 05 Jun China Southern

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

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