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

Return flights

27 Oct - 11 Nov	British Airways
29 Oct - 05 Nov	British Airways
27 Oct - 03 Nov	British Airways
30 Oct - 06 Nov	Delta
14 Oct - 21 Oct	Delta
21 Oct - 28 Oct	Delta
15 Oct - 22 Oct	Delta
22 Oct - 29 Oct	Lufthansa
20 Oct - 27 Oct	Delta
23 Oct - 30 Oct	Delta
24 Oct - 31 Oct	Delta
16 Oct - 08 Nov	British Airways
16 Oct - 23 Oct	Delta
17 Oct - 24 Oct	Delta
08 Oct - 21 Oct	Delta
26 Oct - 02 Nov	British Airways

Also check the deals for one-way flights from Phoenix 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.

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Cheapest return flights from Phoenix to Lisbon in October from $457

Return flights