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

Return flights

05 Dec - 08 Dec	Air China
05 Dec - 13 Dec	Air China
02 Dec - 12 Dec	Air China
03 Dec - 09 Dec	Air China
06 Dec - 16 Dec	Air China
14 Dec - 10 Jan	Air China
05 Dec - 15 Dec	Air China
26 Dec - 05 Jan	Lufthansa
13 Dec - 19 Dec	Air China
26 Dec - 03 Jan	Finnair
27 Dec - 04 Jan	Air China
26 Dec - 30 Dec	Etihad Airways
22 Dec - 31 Dec	Etihad Airways
20 Dec - 05 Jan	Etihad Airways
25 Dec - 29 Dec	SWISS
23 Dec - 03 Jan	Finnair
26 Dec - 02 Jan	Air China
20 Dec - 01 Jan	Etihad Airways
24 Dec - 04 Jan	Emirates
20 Dec - 02 Jan	Etihad Airways

Also check the deals for one-way flights from Hong Kong 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 Hong Kong to Barcelona in December from 381€

Return flights