AirHint found the following cheapest return flights from San Francisco (SFO) to Lisbon (LIS) in October 2026 (see full year).
Return flights
| 13 Oct - 19 Oct | Air Canada | ||
| 07 Oct - 18 Nov | Air Canada | ||
| 11 Oct - 17 Oct | British Airways | ||
| 07 Oct - 18 Nov | TAP | direct | |
| 13 Oct - 19 Oct | TAP | direct |
Also check the deals for one-way flights from San Francisco to Lisbon in October.
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