Cheapest return flights from Istanbul to Seoul in May from $643

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

Return flights

15 May - 28 May Air China
21 May - 27 May China Southern
14 May - 01 Jun China Southern
22 May - 30 May Air China
22 May - 06 Jun Air China
10 May - 21 May Air China
10 May - 19 May Air China
24 May - 02 Jun Air China
24 May - 30 May Air China
17 May - 30 May Air China
24 May - 28 May Air China
13 May - 23 May Air China
17 May - 21 May Air China
23 May - 02 Jun ANA

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

Skyscanner

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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