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

Return flights

23 Oct - 11 Nov	Ryanair
29 Oct - 02 Nov	Ryanair
27 Oct - 04 Nov	Ryanair
28 Oct - 11 Nov	Air Europa
31 Oct - 14 Nov	Iberia
23 Oct - 01 Nov	Ryanair
30 Oct - 05 Nov	Air Europa
30 Oct - 07 Nov	Air Europa
30 Oct - 08 Nov	Air Europa
21 Oct - 07 Nov	Iberia
22 Oct - 29 Oct	Iberia
23 Oct - 29 Oct	Air Europa
23 Oct - 31 Oct	Air Europa
25 Oct - 28 Oct	Iberia
20 Oct - 30 Oct	Iberia
21 Oct - 31 Oct	Air Europa
23 Oct - 30 Oct	Air China
19 Oct - 30 Oct	Sichuan Airlines
19 Oct - 29 Oct	Hainan Airlines
16 Oct - 28 Oct	KLM

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 652€

Return flights