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

Return flights

05 Dec - 08 Dec	Spirit Airlines
13 Dec - 11 Jan	Scandinavian Airlines
10 Dec - 23 Dec	British Airways
05 Dec - 08 Dec	Air France	direct
10 Dec - 23 Dec	Air France	direct
24 Dec - 03 Jan	British Airways
22 Dec - 05 Jan	Lufthansa
22 Dec - 29 Dec	Lufthansa
15 Dec - 22 Dec	Delta	direct
20 Dec - 27 Dec	British Airways
27 Dec - 02 Jan	Lufthansa
19 Dec - 05 Jan	Lufthansa
22 Dec - 29 Dec	Delta	direct
22 Dec - 05 Jan	KLM	direct
27 Dec - 02 Jan	Air France	direct

Also check the deals for one-way flights from Atlanta 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 Atlanta to Madrid in December from 461€

Return flights