Cheapest return flights from San Francisco to Lisbon in May from $524

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

Return flights

05 May - 13 May British Airways
02 May - 23 May British Airways
02 May - 09 May American Airlines
04 May - 30 May British Airways
18 May - 13 Jun British Airways
01 May - 08 May TAP direct
24 May - 13 Jun Iberia For Level
02 May - 09 May TAP direct
11 May - 18 May TAP

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

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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