Cheapest return flights from Seoul to Istanbul in April from 521€

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

Return flights

16 Apr - 23 Apr Etihad Airways
30 Apr - 11 May Etihad Airways
17 Apr - 23 Apr Etihad Airways
22 Apr - 26 Apr Etihad Airways
08 Apr - 13 Apr Etihad Airways
16 Apr - 30 Apr Qatar Airways
02 Apr - 13 Apr Qatar Airways
10 Apr - 17 Apr Qatar Airways
01 Apr - 07 Apr Qatar Airways
10 Apr - 15 Apr Qatar Airways
10 Apr - 14 Apr Qatar Airways
23 Apr - 05 May Etihad Airways
28 Apr - 10 May Etihad Airways
30 Apr - 14 May Etihad Airways
28 Apr - 12 May Etihad Airways
30 Apr - 10 May Etihad Airways
25 Apr - 04 May Singapore Airlines
30 Apr - 08 May Singapore Airlines
22 Apr - 06 May Singapore Airlines
29 Apr - 06 May Singapore Airlines

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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