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

Return flights

24 Dec - 28 Dec	Iberia
29 Dec - 08 Jan	British Airways
25 Dec - 30 Dec	Lufthansa
23 Dec - 28 Dec	British Airways
28 Dec - 08 Jan	British Airways
24 Dec - 31 Dec	SWISS
23 Dec - 27 Dec	Air Canada
26 Dec - 02 Jan	British Airways
27 Dec - 03 Jan	Finnair
24 Dec - 03 Jan	British Airways
23 Dec - 01 Jan	British Airways
28 Dec - 01 Jan	Lufthansa
27 Dec - 04 Jan	Lufthansa
23 Dec - 05 Jan	KLM
30 Dec - 03 Jan	Lufthansa
23 Dec - 27 Dec	TAP	direct
25 Dec - 30 Dec	TAP	direct

Also check the deals for one-way flights from Los Angeles to Lisbon 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 Lisbon in December from $701

Return flights