Cheapest return flights from San Francisco to Lisbon in May from 564€

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

13 May - 20 May Finnair
05 May - 13 May Finnair
12 May - 20 May Finnair
05 May - 12 May Finnair
14 May - 21 May American Airlines
04 May - 12 May British Airways
06 May - 14 May Iberia
11 May - 19 May British Airways
13 May - 21 May American Airlines
06 May - 22 May Finnair
27 May - 04 Jun Vueling Airlines
24 May - 01 Jun Air Transat
15 May - 05 Jun British Airways
28 May - 05 Jun WestJet
26 May - 03 Jun Flair Airlines
25 May - 02 Jun LEVEL
29 May - 12 Jun WestJet
27 May - 17 Jun LEVEL
16 May - 11 Jun Frontier Airlines
29 May - 07 Jun WestJet

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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