Cheapest one-way flights from San Francisco to Lisbon in August from $341

Best time to book flights for San Francisco (SFO) to Lisbon (LIS) flights at AirHint

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

One-Way flights

16 Aug Iberia
04 Aug TAP direct
16 Aug TAP direct
23 Aug WestJet
09 Aug Iberia
11 Aug TAP direct
09 Aug TAP direct
21 Aug Iberia
01 Aug WestJet
15 Aug Frontier Airlines

Also check the deals for return 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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