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

Return flights

27 Apr - 13 May	Qatar Airways
01 Apr - 11 Apr	Pegasus Airlines
05 Apr - 11 Apr	Pegasus Airlines
08 Apr - 12 Apr	Qatar Airways
23 Apr - 13 May	Qatar Airways
13 Apr - 16 Apr	AirAsia X
23 Apr - 08 May	Qatar Airways
01 Apr - 13 May	AirAsia X
14 Apr - 22 Apr	Qatar Airways
13 Apr - 20 Apr	Pegasus Airlines
02 Apr - 14 Apr	AJet
13 Apr - 14 Apr	Pegasus Airlines
12 Apr - 25 Apr	Pegasus Airlines
01 Apr - 07 Apr	AirAsia X
01 Apr - 01 May	Pegasus Airlines
21 Apr - 03 May	Air Arabia
22 Apr - 07 May	Air Arabia
01 Apr - 11 May	Pegasus Airlines
02 Apr - 31 May	AJet
30 Apr - 14 May	AJet

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

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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Cheapest return flights from Istanbul to Seoul in April from 552€

Return flights