AirHint found the following cheapest one-way flights from San Francisco (SFO) to Lisbon (LIS) in October 2025 (see full year).
One-Way flights
| 27 Oct | TAP | direct | |
| 25 Oct | Iberia | ||
| 30 Oct | FrenchBee | ||
| 29 Oct | Alaska Airlines | ||
| 25 Oct | TAP | direct | |
| 28 Oct | Frontier Airlines | ||
| 31 Oct | United | ||
| 26 Oct | SWISS | ||
| 29 Oct | TAP | direct | |
| 31 Oct | TAP | direct |
Also check the deals for return flights from San Francisco to Lisbon in October.
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