Cheapest return flights from Seoul to Istanbul in April from 434€

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

Return flights

11 Apr - 17 Apr Air China
01 Apr - 05 Apr Etihad Airways
02 Apr - 11 Apr Etihad Airways
09 Apr - 11 Apr Etihad Airways
03 Apr - 11 Apr Etihad Airways
09 Apr - 16 Apr Etihad Airways
16 Apr - 23 Apr Etihad Airways
26 Apr - 07 May Etihad Airways
02 Apr - 10 Apr Qatar Airways
03 Apr - 10 Apr Qatar Airways
10 Apr - 14 Apr Qatar Airways
14 Apr - 27 May Qatar Airways
29 Apr - 05 May Etihad Airways
29 Apr - 03 May Etihad Airways
29 Apr - 04 May Etihad Airways
24 Apr - 02 May Etihad Airways
27 Apr - 05 May Etihad Airways
30 Apr - 05 May Etihad Airways
06 Apr - 11 May Etihad Airways
29 Apr - 10 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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