AirHint found the following cheapest one-way flights from San Francisco (SFO) to Lisbon (LIS) in September 2026 (see full year).
One-Way flights
| 20 Sep | LEVEL | ||
| 06 Sep | LEVEL | ||
| 01 Sep | LEVEL | ||
| 07 Sep | SWISS | ||
| 02 Sep | Air Canada | ||
| 09 Sep | SWISS | ||
| 13 Sep | American Airlines | ||
| 15 Sep | Iberia | ||
| 12 Sep | Lufthansa | ||
| 11 Sep | British Airways |
Also check the deals for return flights from San Francisco to Lisbon in September.
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