AirHint found the following cheapest return flights from San Francisco (SFO) to Lisbon (LIS) in January 2026 (see full year).

Return flights

20 Jan - 30 Jan	United
06 Jan - 31 Jan	United
13 Jan - 07 Feb	United
31 Jan - 27 Feb	United
12 Jan - 07 Feb	United
16 Jan - 19 Jan	Air France
14 Jan - 07 Feb	United
16 Jan - 26 Jan	Air France
19 Jan - 14 Feb	Air France
07 Jan - 31 Jan	SWISS
10 Jan - 31 Jan	United
29 Jan - 08 Feb	Air France
31 Jan - 27 Feb	TAP	direct
05 Jan - 31 Jan	British Airways
04 Jan - 24 Jan	British Airways
10 Jan - 31 Jan	TAP	direct
14 Jan - 07 Feb	TAP	direct
31 Jan - 07 Feb	TAP	direct
12 Jan - 07 Feb	TAP	direct
10 Jan - 17 Jan	TAP	direct

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

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 San Francisco to Lisbon in January from 435€

Return flights