Cheapest one-way flights from San Francisco to Lisbon in December from $356

AirHint found the following cheapest one-way flights from San Francisco (SFO) to Lisbon (LIS) in December 2025 (see full year).

One-Way flights

31 Dec Aer Lingus
28 Dec Lufthansa
26 Dec British Airways
27 Dec British Airways
24 Dec British Airways
25 Dec Scandinavian Airlines
13 Dec Alaska Airlines
14 Dec Alaska Airlines
31 Dec TAP direct
12 Dec Alaska Airlines

Also check the deals for return flights from San Francisco to Lisbon in December.

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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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