Cheapest return flights from San Francisco to Lisbon in December from 578€

Best time to book flights for San Francisco (SFO) to Lisbon (LIS) flights at AirHint

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

Return flights

02 Dec - 16 Dec Air Canada
31 Dec - 09 Jan Air Canada
11 Dec - 17 Dec United
10 Dec - 20 Dec Air Canada
05 Dec - 19 Dec United
31 Dec - 09 Jan TAP direct
13 Dec - 19 Dec SWISS
10 Dec - 20 Dec TAP direct
05 Dec - 19 Dec TAP direct
13 Dec - 19 Dec TAP direct
19 Dec - 31 Dec TAP direct
20 Dec - 31 Dec United

Also check the deals for one-way flights from San Francisco to Lisbon in December.

Skyscanner

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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