AirHint found the following cheapest return flights from Oakland (OAK) to Lisbon (LIS) in September 2026 (see full year).
Return flights
| 18 Sep - 08 Oct | British Airways | ||
| 17 Sep - 29 Sep | British Airways | ||
| 01 Sep - 07 Sep | Alaska Airlines | ||
| 02 Sep - 08 Sep | Alaska Airlines | ||
| 02 Sep - 07 Sep | Alaska Airlines |
Also check the deals for one-way flights from Oakland to Lisbon in September.
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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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