AirHint found the following cheapest return flights from Madrid (MAD) to Seoul (ICN) in October 2026 (see full year).

Return flights

02 Oct - 13 Oct	Sichuan Airlines
02 Oct - 15 Oct	Sichuan Airlines
28 Oct - 10 Nov	Lufthansa
27 Oct - 10 Nov	KLM
30 Oct - 12 Nov	Air France
22 Oct - 01 Nov	Etihad Airways
31 Oct - 09 Nov	LOT
27 Oct - 05 Nov	KLM
27 Oct - 13 Nov	Lufthansa
24 Oct - 01 Nov	Etihad Airways
29 Oct - 08 Nov	KLM
30 Oct - 09 Nov	Air France
13 Oct - 27 Oct	Finnair
03 Oct - 17 Oct	Iberia
03 Oct - 10 Oct	Iberia
08 Oct - 22 Oct	Finnair
15 Oct - 22 Oct	Finnair
15 Oct - 27 Oct	Finnair
08 Oct - 20 Oct	Finnair
02 Oct - 19 Oct	Sichuan Airlines

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 $665

Return flights