Cheapest one-way flights from San Francisco to Lisbon in December from $301

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

One-Way flights

04 Dec WestJet
02 Dec Flair Airlines
08 Dec Frontier Airlines
03 Dec Frontier Airlines
09 Dec Frontier Airlines
10 Dec Frontier Airlines
06 Dec Hawaiian Airlines
07 Dec Alaska Airlines
11 Dec Alaska Airlines
01 Dec Hawaiian 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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