AirHint found the following cheapest return flights from Seoul (GMP) to Barcelona (BCN) in December 2026 (see full year).

Return flights

14 Dec - 20 Dec	Air China
12 Dec - 20 Dec	Air China
12 Dec - 19 Dec	Air China
23 Dec - 31 Dec	Air China
23 Dec - 28 Dec	Air China
07 Dec - 21 Dec	Air China
22 Dec - 31 Dec	Air China
22 Dec - 02 Jan	Air China
13 Dec - 25 Dec	Air China
02 Dec - 08 Dec	Air China
19 Dec - 26 Dec	Air China
21 Dec - 09 Jan	Air China
24 Dec - 03 Jan	Air China
20 Dec - 02 Jan	Air China
24 Dec - 02 Jan	Air China
21 Dec - 06 Jan	Air China
28 Dec - 07 Jan	Air China
28 Dec - 09 Jan	Air China
30 Dec - 09 Jan	Air China
29 Dec - 08 Jan	Air China

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 $564

Return flights