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

Return flights

10 Mar - 17 Mar	Finnair
04 Mar - 11 Mar	American Airlines
11 Mar - 18 Mar	British Airways
03 Mar - 10 Mar	Finnair
02 Mar - 16 Mar	Finnair
02 Mar - 09 Mar	British Airways
01 Mar - 08 Mar	Scandinavian Airlines
08 Mar - 15 Mar	Scandinavian Airlines
05 Mar - 12 Mar	American Airlines
09 Mar - 16 Mar	Finnair
31 Mar - 07 Apr	British Airways
23 Mar - 18 Apr	British Airways
23 Mar - 18 Apr	TAP	direct
30 Mar - 06 Apr	Air Canada
29 Mar - 05 Apr	Air Canada
31 Mar - 07 Apr	TAP	direct
28 Mar - 04 Apr	TAP

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

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 March from 388€

Return flights