AirHint found the following cheapest return flights from Seoul (ICN) to Barcelona (BCN) in December 2025 (see full year).

Return flights

05 Dec - 13 Dec	Air France
04 Dec - 10 Dec	Air France
02 Dec - 08 Dec	Air France
02 Dec - 11 Dec	Air France
02 Dec - 14 Dec	Air France
03 Dec - 12 Dec	Air France
05 Dec - 08 Dec	Air France
10 Dec - 15 Dec	Air France
02 Dec - 12 Dec	Air France
05 Dec - 11 Dec	Air France
11 Dec - 07 Jan	Air France
17 Dec - 07 Jan	Air France
30 Dec - 11 Jan	KLM
30 Dec - 15 Jan	KLM
30 Dec - 09 Jan	KLM
30 Dec - 21 Jan	KLM
30 Dec - 07 Jan	KLM
30 Dec - 08 Jan	KLM
30 Dec - 06 Jan	KLM
25 Dec - 12 Jan	KLM

Also check the deals for one-way flights from Seoul to Barcelona 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.

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Cheapest return flights from Seoul to Barcelona in December from 484€

Return flights