Cheapest return flights from Seoul to Istanbul in April from 648€

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

Return flights

01 Apr - 06 Apr China Southern
08 Apr - 13 Apr China Southern
08 Apr - 20 Apr China Southern
20 Apr - 25 Apr China Southern
08 Apr - 16 Apr China Southern
12 Apr - 25 Apr China Southern
13 Apr - 25 Apr China Southern
01 Apr - 16 Apr China Southern
01 Apr - 13 Apr China Southern
20 Apr - 27 Apr China Southern
30 Apr - 12 May Air China
20 Apr - 02 May China Southern
30 Apr - 08 May Air China
28 Apr - 05 May Air China
23 Apr - 06 May Air China
28 Apr - 03 May Air China
23 Apr - 07 May Air China
28 Apr - 07 May Air China
13 Apr - 16 May China Southern
27 Apr - 11 May China Southern

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

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