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

Return flights

11 Dec - 16 Dec	China Southern
11 Dec - 13 Dec	China Southern
02 Dec - 09 Dec	Ryanair
07 Dec - 16 Dec	Iberia
05 Dec - 16 Dec	Ryanair
11 Dec - 27 Dec	Air China
11 Dec - 26 Dec	Air China
05 Dec - 09 Dec	Air China
05 Dec - 29 Jan	Air China
01 Dec - 15 Dec	Air Europa
02 Dec - 16 Dec	Air China
07 Dec - 23 Jan	Air China
15 Dec - 20 Jan	Air China
31 Dec - 13 Jan	China Eastern
18 Dec - 23 Jan	Air Europa
27 Dec - 12 Jan	Royal Air Maroc
26 Dec - 10 Jan	Royal Air Maroc
20 Dec - 10 Jan	Hainan Airlines
28 Dec - 11 Jan	Air China
14 Dec - 01 Jan	Air China

Also check the deals for one-way flights from Madrid to Seoul in December.

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from Madrid to Seoul in December from 508€

Return flights