Cheapest return flights from San Francisco to Lisbon in August from $593

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 August 2025 (see full year).

Return flights

21 Aug - 28 Aug TAP direct
20 Aug - 10 Sep TAP direct
25 Aug - 09 Sep TAP
14 Aug - 20 Aug TAP direct
31 Aug - 11 Sep LEVEL
28 Aug - 02 Sep Scandinavian Airlines
16 Aug - 23 Aug LEVEL
27 Aug - 11 Sep TAP direct
27 Aug - 04 Sep TAP direct
08 Aug - 18 Aug Air Canada
06 Aug - 13 Aug United
30 Aug - 07 Sep LEVEL
08 Aug - 15 Aug SWISS
12 Aug - 16 Aug LEVEL
06 Aug - 14 Aug TAP direct
06 Aug - 13 Aug TAP direct
07 Aug - 17 Aug LEVEL

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

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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