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

Return flights

19 May - 11 Jun	Finnair
05 May - 12 May	Iberia
19 May - 12 Jun	British Airways
20 May - 12 Jun	British Airways
08 May - 15 May	British Airways
20 May - 13 Jun	British Airways
20 May - 14 Jun	British Airways
21 May - 13 Jun	Finnair
19 May - 18 Jun	Air Canada
20 May - 16 Jun	British Airways
20 May - 17 Jun	British Airways
20 May - 15 Jun	British Airways
15 May - 22 May	Iberia

Also check the deals for one-way flights from Phoenix to Madrid 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 Madrid in May from $516

Return flights