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

Return flights

04 Dec - 13 Dec	TAP	direct
30 Dec - 10 Jan	TAP	direct
02 Dec - 16 Dec	TAP	direct
25 Dec - 30 Dec	TAP	direct
11 Dec - 25 Dec	TAP	direct
27 Dec - 13 Jan	TAP	direct
02 Dec - 09 Dec	TAP	direct
01 Dec - 15 Dec	British Airways
01 Dec - 06 Dec	Scandinavian Airlines
05 Dec - 14 Dec	Air France
09 Dec - 16 Dec	United
04 Dec - 11 Dec	United
30 Dec - 08 Jan	Air Canada
30 Dec - 06 Jan	Air Canada
27 Dec - 06 Jan	Lufthansa
14 Dec - 01 Jan	British Airways
26 Dec - 05 Jan	British Airways
25 Dec - 05 Jan	British Airways
25 Dec - 01 Jan	British Airways
16 Dec - 03 Jan	British Airways

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 $482

Return flights