Cheapest return flights from Seoul to Istanbul in April from $466

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

Return flights

01 Apr - 04 Apr China Southern
01 Apr - 16 Apr China Southern
01 Apr - 14 Apr China Southern
01 Apr - 07 Apr China Southern
16 Apr - 21 Apr Air China
14 Apr - 21 Apr Air China
09 Apr - 12 Apr Air China
07 Apr - 21 Apr Air China
07 Apr - 14 Apr Air China
15 Apr - 21 Apr Air China
03 Apr - 02 May China Southern
30 Apr - 03 May Air China
22 Apr - 03 May Air China
28 Apr - 03 May Air China
28 Apr - 12 May Air China
27 Apr - 03 May Air China
01 Apr - 18 May China Southern
22 Apr - 01 May Air China
10 Apr - 16 May China Southern
03 Apr - 16 May China Southern

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

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