Cheapest return flights from San Francisco to Lisbon in August from 548€

AirHint found the following cheapest return flights from San Francisco (SFO) to Lisbon (LIS) in August 2025 (see full year).

Return flights

12 Aug - 26 Aug United
20 Aug - 27 Aug United
20 Aug - 28 Aug United
20 Aug - 10 Sep United
18 Aug - 03 Sep United
18 Aug - 03 Sep TAP direct
11 Aug - 21 Aug Delta
24 Aug - 09 Sep British Airways
19 Aug - 25 Aug SWISS
20 Aug - 30 Aug SWISS
21 Aug - 28 Aug United
09 Aug - 23 Aug SWISS
09 Aug - 22 Aug Delta
07 Aug - 20 Aug SWISS
18 Aug - 01 Sep Brussels Airlines
27 Aug - 03 Sep Delta
30 Aug - 24 Sep Frontier Airlines
27 Aug - 01 Sep Air France
20 Aug - 10 Sep TAP direct
28 Aug - 02 Sep Frontier Airlines

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

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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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