Cheapest return flights from Seoul to Istanbul in April from $623

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

Return flights

05 Apr - 18 Apr China Southern
05 Apr - 09 Apr China Southern
05 Apr - 14 Apr China Southern
05 Apr - 11 Apr China Southern
08 Apr - 20 Apr China Southern
05 Apr - 16 Apr China Southern
14 Apr - 23 Apr Air Busan
14 Apr - 24 Apr Air Busan
14 Apr - 22 Apr Air China
14 Apr - 26 Apr Air China
27 Apr - 12 May Air China
27 Apr - 03 May Air China
29 Apr - 03 May Air China
26 Apr - 02 May China Southern
24 Apr - 02 May China Southern
27 Apr - 08 May Air China
27 Apr - 10 May Air China
30 Apr - 06 May Air China
23 Apr - 03 May Air Busan
15 Apr - 05 May Air China

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

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