AirHint found the following cheapest return flights from Phoenix (PHX) to Madrid (MAD) in December 2025 (see full year).

Return flights

02 Dec - 11 Dec	KLM
03 Dec - 10 Dec	Iberia
30 Dec - 16 Jan	Delta
01 Dec - 07 Dec	Delta
06 Dec - 13 Dec	KLM
30 Dec - 24 Jan	Air Canada
29 Dec - 16 Jan	KLM
15 Dec - 24 Dec	American Airlines
14 Dec - 24 Dec	American Airlines
28 Dec - 17 Jan	British Airways
07 Dec - 14 Dec	Iberia
15 Dec - 23 Dec	American Airlines
14 Dec - 23 Dec	American Airlines
13 Dec - 18 Jan	Iberia
09 Dec - 16 Dec	Iberia
30 Dec - 09 Jan	Frontier Airlines
26 Dec - 13 Jan	WestJet
23 Dec - 09 Jan	Frontier Airlines
22 Dec - 09 Jan	Frontier Airlines
31 Dec - 07 Jan	Iberia

Also check the deals for one-way flights from Phoenix to Madrid in December.

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 December from $429

Return flights