AirHint found the following cheapest return flights from San Jose (SJC) to Lisbon (LIS) in October 2025 (see full year).

Return flights

28 Oct - 04 Nov	British Airways
17 Oct - 24 Oct	British Airways
10 Oct - 18 Oct	Hawaiian Airlines
31 Oct - 07 Nov	British Airways
30 Oct - 06 Nov	British Airways
03 Oct - 10 Oct	British Airways
25 Oct - 01 Nov	British Airways
04 Oct - 11 Oct	British Airways
21 Oct - 28 Oct	British Airways
01 Oct - 08 Oct	Finnair
20 Oct - 27 Oct	Alaska Airlines
02 Oct - 09 Oct	Alaska Airlines
06 Oct - 13 Oct	Air Canada
26 Oct - 02 Nov	Air Canada
18 Oct - 25 Oct	Air Canada

Also check the deals for one-way flights from San Jose to Lisbon in October.

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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Cheapest return flights from San Jose to Lisbon in October from 547€

Return flights