Cheapest return flights from Istanbul to Seoul in April from 481€

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

Return flights

21 Apr - 03 May MIAT Mongolian Airlines
23 Apr - 05 May MIAT Mongolian Airlines
19 Apr - 03 May MIAT Mongolian Airlines
19 Apr - 26 Apr MIAT Mongolian Airlines
21 Apr - 27 Apr MIAT Mongolian Airlines
19 Apr - 27 Apr MIAT Mongolian Airlines
23 Apr - 07 May MIAT Mongolian Airlines
23 Apr - 29 Apr MIAT Mongolian Airlines
19 Apr - 29 Apr MIAT Mongolian Airlines
21 Apr - 29 Apr MIAT Mongolian Airlines
23 Apr - 02 May MIAT Mongolian Airlines
15 Apr - 02 May Air China
05 Apr - 18 Apr Air China
26 Apr - 02 May Air China
12 Apr - 18 Apr Air China
05 Apr - 16 Apr Air China
28 Apr - 10 May MIAT Mongolian Airlines
07 Apr - 21 May MIAT Mongolian Airlines
30 Apr - 10 May MIAT Mongolian Airlines
13 Apr - 27 Apr AirAsia X

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