Cheapest return flights from San Francisco to Lisbon in May from $581

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

11 May - 20 May Delta
01 May - 15 May Delta
13 May - 22 May Delta
01 May - 10 May Delta
08 May - 12 May Air Canada
03 May - 10 May Air Canada
04 May - 18 May Air Canada
03 May - 17 May Air Canada
07 May - 12 May Air Canada
01 May - 23 May Air Canada
27 May - 12 Jun WestJet
16 May - 04 Jun WestJet
29 May - 09 Jun WestJet
25 May - 02 Jun WestJet
29 May - 13 Jun WestJet
23 May - 02 Jun WestJet
31 May - 15 Jun Air Transat
29 May - 05 Jun TAP direct
26 May - 07 Jun Air Canada
27 May - 12 Jun 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.

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