AirHint found the following cheapest return flights from Istanbul (SAW) to Seoul (ICN) in October 2025 (see full year).

Return flights

25 Oct - 06 Nov	Pegasus Airlines
20 Oct - 06 Nov	Flynas
25 Oct - 07 Nov	Pegasus Airlines
23 Oct - 05 Nov	Flynas
16 Oct - 21 Oct	Pegasus Airlines
01 Oct - 21 Oct	Pegasus Airlines
26 Oct - 04 Nov	AJet
06 Oct - 15 Oct	Pegasus Airlines
27 Oct - 03 Nov	Air Arabia
20 Oct - 25 Oct	Flynas
23 Oct - 29 Oct	Flynas
23 Oct - 12 Nov	Flynas
20 Oct - 05 Nov	Flynas
30 Oct - 08 Nov	Air Arabia
30 Oct - 05 Nov	Air Arabia
15 Oct - 22 Oct	Pegasus Airlines
05 Oct - 16 Oct	Pegasus Airlines
05 Oct - 12 Oct	Pegasus Airlines
12 Oct - 26 Oct	Pegasus Airlines
03 Oct - 31 Oct	Pegasus Airlines

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

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 October from 558€

Return flights