Cheapest return flights from Seoul to Istanbul in April from $504

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

Return flights

16 Apr - 17 Apr Air China
04 Apr - 12 Apr Air China
16 Apr - 24 Apr Air China
04 Apr - 08 Apr Air China
21 Apr - 26 Apr Air China
16 Apr - 20 Apr Etihad Airways
01 Apr - 20 Apr Etihad Airways
23 Apr - 30 Apr Etihad Airways
02 Apr - 07 Apr Etihad Airways
02 Apr - 09 Apr Etihad Airways
14 Apr - 05 May Etihad Airways
26 Apr - 06 May Etihad Airways
23 Apr - 05 May Etihad Airways
26 Apr - 03 May Singapore Airlines
25 Apr - 03 May Singapore Airlines
22 Apr - 02 May China Southern
07 Apr - 31 May Singapore Airlines
30 Apr - 05 May Etihad Airways
30 Apr - 11 May Etihad Airways
23 Apr - 04 May Etihad Airways

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

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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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