Cheapest one-way flights from San Francisco to Lisbon in May from 327€

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

One-Way flights

25 May Flair Airlines
09 May Frontier Airlines
02 May Frontier Airlines
04 May Aer Lingus
27 May Flair Airlines
19 May Aer Lingus
18 May Frontier Airlines
05 May Alaska Airlines
29 May Frontier Airlines
30 May Frontier Airlines

Also check the deals for return 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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