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

Return flights

02 Dec - 10 Dec	KLM
01 Dec - 15 Dec	KLM
02 Dec - 07 Dec	KLM
04 Dec - 10 Dec	Delta
04 Dec - 09 Dec	Delta
06 Dec - 17 Dec	KLM
08 Dec - 22 Dec	KLM
31 Dec - 23 Jan	British Airways
01 Dec - 21 Dec	KLM
01 Dec - 30 Dec	Lufthansa
08 Dec - 21 Dec	KLM
31 Dec - 24 Jan	Air France
24 Dec - 16 Jan	Delta
30 Dec - 18 Jan	KLM
31 Dec - 12 Jan	British Airways
24 Dec - 08 Jan	British Airways
29 Dec - 11 Jan	British Airways
29 Dec - 12 Jan	British Airways
29 Dec - 10 Jan	British Airways
28 Dec - 08 Jan	Iberia

Also check the deals for one-way flights from Milan to San Jose 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 Jose in December from $776

Return flights