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

Return flights

09 Dec - 18 Dec	Iberia	direct
11 Dec - 18 Dec	Iberia	direct
04 Dec - 09 Dec	Iberia	direct
30 Dec - 20 Jan	Iberia	direct
02 Dec - 23 Dec	Iberia	direct
07 Dec - 21 Dec	Iberia	direct
10 Dec - 24 Dec	Iberia
25 Dec - 30 Dec	Iberia	direct
11 Dec - 30 Dec	Iberia	direct
07 Dec - 07 Jan	Air Canada
07 Dec - 13 Dec	Iberia
23 Dec - 06 Jan	Air Canada
20 Dec - 30 Dec	Lufthansa
23 Dec - 06 Jan	Iberia	direct
23 Dec - 08 Jan	Iberia	direct
04 Dec - 04 Jan	Iberia	direct
18 Dec - 10 Jan	Norse Atlantic Airways
17 Dec - 06 Jan	Lufthansa
22 Dec - 07 Jan	Norse Atlantic Airways
18 Dec - 05 Jan	Norse Atlantic Airways

Also check the deals for one-way flights from Los Angeles 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 Los Angeles to Barcelona in December from $439

Return flights