Cheapest return flights from Seoul to Istanbul in April from $603

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

Return flights

22 Apr - 25 Apr China Southern
22 Apr - 05 May China Southern
24 Apr - 05 May China Southern
29 Apr - 07 May China Southern
10 Apr - 16 Apr China Southern
01 Apr - 14 Apr China Southern
27 Apr - 14 May China Southern
30 Apr - 10 May Air China
22 Apr - 26 Apr ANA
08 Apr - 15 Apr ANA
23 Apr - 05 May ANA
26 Apr - 04 May ANA
22 Apr - 24 Apr ANA
23 Apr - 25 Apr ANA

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

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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