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

Return flights

24 Oct - 31 Oct	Wizz Air Malta
21 Oct - 01 Nov	Air China
24 Oct - 26 Oct	Ryanair
23 Oct - 06 Nov	Ryanair
23 Oct - 16 Nov	Ryanair
20 Oct - 26 Oct	Ryanair
24 Oct - 16 Nov	Ryanair
23 Oct - 02 Nov	Ryanair
20 Oct - 28 Oct	Air China
28 Oct - 11 Nov	Air China
28 Oct - 04 Nov	Air China
21 Oct - 18 Nov	Air China
04 Oct - 10 Oct	Hainan Airlines
22 Oct - 15 Nov	Wizz Air Malta
04 Oct - 20 Oct	Hainan Airlines
26 Oct - 15 Nov	LOT
01 Oct - 10 Oct	LOT
01 Oct - 11 Oct	LOT
26 Oct - 30 Oct	Air China
21 Oct - 31 Oct	Air China

Also check the deals for one-way flights from Madrid 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 Madrid to Seoul in October from 508€

Return flights