Cheapest return flights from San Francisco to Lisbon in August from $604

AirHint found the following cheapest return flights from San Francisco (SFO) to Lisbon (LIS) in August 2026 (see full year).

Return flights

15 Aug - 05 Sep Scandinavian Airlines
15 Aug - 05 Sep TAP direct

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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