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

Return flights

02 Dec - 16 Dec	Pegasus Airlines
01 Dec - 16 Dec	Pegasus Airlines
01 Dec - 11 Dec	Pegasus Airlines
09 Dec - 16 Dec	Pegasus Airlines
01 Dec - 09 Dec	Pegasus Airlines
06 Dec - 16 Dec	Wizz Air Malta
01 Dec - 25 Dec	Pegasus Airlines
03 Dec - 16 Dec	Vueling Airlines
01 Dec - 31 Dec	Air China
05 Dec - 16 Dec	Wizz Air Malta
11 Dec - 17 Jan	Vueling Airlines
11 Dec - 14 Jan	Air China
08 Dec - 11 Jan	Air China
10 Dec - 19 Jan	Air China
05 Dec - 17 Jan	Air China
05 Dec - 16 Jan	Air China
05 Dec - 18 Jan	Air China
31 Dec - 08 Jan	Air China
30 Dec - 14 Jan	Air China
30 Dec - 09 Jan	Air China

Also check the deals for one-way flights from Barcelona to Bangkok 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 Barcelona to Bangkok in December from 463€

Return flights