Cheapest return flights from San Francisco to Lisbon in May from 611€

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

Return flights

19 May - 26 May Air Canada
15 May - 21 May SWISS
11 May - 25 May British Airways
19 May - 26 May TAP direct
15 May - 21 May TAP direct
14 May - 28 May TAP direct
07 May - 14 May Delta
21 May - 29 May TAP direct

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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Feel free to contact us with any feedback or request another flight research.