AirHint found the following cheapest return flights from Phoenix (PHX) to Lisbon (LIS) in May 2026 (see full year).

Return flights

05 May - 20 May	Lufthansa
05 May - 12 May	Lufthansa
06 May - 13 May	Air Canada
04 May - 11 May	Air Canada
07 May - 14 May	Air Canada
01 May - 08 May	British Airways
08 May - 15 May	British Airways
03 May - 10 May	Finnair
02 May - 09 May	Air Canada
12 May - 06 Jun	Lufthansa
30 May - 20 Jun	Lufthansa
26 May - 20 Jun	British Airways
25 May - 20 Jun	British Airways
28 May - 01 Jun	Air Canada

Also check the deals for one-way flights from Phoenix to Lisbon in May.

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 May from $560

Return flights