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

Return flights

09 Dec - 16 Dec	KLM
30 Dec - 14 Jan	Delta
06 Dec - 23 Dec	Virgin Atlantic
02 Dec - 09 Dec	Iberia
04 Dec - 11 Dec	Iberia
06 Dec - 13 Dec	Iberia
24 Dec - 31 Dec	British Airways
16 Dec - 23 Dec	Iberia
08 Dec - 15 Dec	Iberia
04 Dec - 27 Dec	United
08 Dec - 12 Dec	Frontier Airlines
24 Dec - 06 Jan	Iberia
28 Dec - 05 Jan	Delta
18 Dec - 19 Jan	British Airways
24 Dec - 07 Jan	Delta
31 Dec - 07 Jan	Iberia
20 Dec - 11 Jan	WestJet
17 Dec - 05 Jan	WestJet
20 Dec - 06 Jan	WestJet
20 Dec - 05 Jan	WestJet

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 377€

Return flights