Cheapest return flights from San Francisco to Lisbon in May from $695

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 May 2025 (see full year).

Return flights

06 May - 20 May American Airlines
13 May - 20 May SWISS
06 May - 10 May LEVEL
01 May - 08 May Air Canada
02 May - 09 May Air Canada
03 May - 18 May British Airways
21 May - 28 May WestJet
17 May - 26 May WestJet
07 May - 11 May SWISS
22 May - 27 May WestJet
23 May - 01 Jun Air Transat
28 May - 05 Jun Air France
25 May - 02 Jun Air France
27 May - 04 Jun Virgin Atlantic
30 May - 06 Jun WestJet
22 May - 06 Jun WestJet
29 May - 05 Jun Iberia
29 May - 06 Jun Air Canada
24 May - 01 Jun LEVEL
29 May - 05 Jun TAP direct

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

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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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