AirHint found the following cheapest return flights from Milan (LIN) to San Juan (SJU) in December 2025 (see full year).

Return flights

31 Dec - 12 Jan	Iberia
15 Dec - 23 Dec	Air France
05 Dec - 12 Dec	United
06 Dec - 14 Dec	Air France
01 Dec - 07 Dec	Aer Lingus
09 Dec - 15 Dec	Iberia
29 Dec - 09 Jan	British Airways
14 Dec - 25 Dec	Air France
29 Dec - 07 Jan	British Airways
17 Dec - 31 Dec	Air France
24 Dec - 08 Jan	Air France
22 Dec - 30 Dec	KLM
22 Dec - 09 Jan	British Airways
29 Dec - 06 Jan	British Airways
13 Dec - 25 Dec	Air France
25 Dec - 07 Jan	Iberia
26 Dec - 07 Jan	Iberia
26 Dec - 09 Jan	Iberia
19 Dec - 09 Jan	Air France
19 Dec - 26 Dec	Air France

Also check the deals for one-way flights from Milan to San Juan 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 Milan to San Juan in December from $899

Return flights