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

Return flights

01 Dec - 16 Dec	Air Canada
06 Dec - 13 Dec	TAP
01 Dec - 12 Dec	KLM
06 Dec - 12 Dec	TAP
03 Dec - 09 Dec	British Airways
07 Dec - 17 Dec	Delta
09 Dec - 13 Jan	American Airlines
06 Dec - 16 Dec	Delta
31 Dec - 14 Jan	Iberia	direct
30 Dec - 13 Jan	Air Canada
07 Dec - 14 Dec	Air Canada
03 Dec - 14 Dec	British Airways	direct
07 Dec - 14 Dec	British Airways	direct
10 Dec - 25 Jan	British Airways	direct
29 Dec - 24 Jan	Air Canada
31 Dec - 09 Jan	Iberia
03 Dec - 10 Jan	British Airways
30 Dec - 11 Jan	Air Canada
31 Dec - 11 Jan	Air Canada
24 Dec - 17 Jan	KLM

Also check the deals for one-way flights from Los Angeles to Madrid 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 Madrid in December from $421

Return flights