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

Return flights

03 Dec - 23 Dec	Air France
04 Dec - 10 Dec	Delta
04 Dec - 09 Dec	Delta
07 Dec - 24 Dec	Delta
04 Dec - 27 Dec	Air France
04 Dec - 28 Dec	KLM
02 Dec - 23 Dec	KLM
03 Dec - 10 Dec	Delta
09 Dec - 23 Dec	Delta
08 Dec - 23 Dec	Delta
30 Dec - 16 Jan	Aer Lingus
16 Dec - 13 Jan	ITA Airways
13 Dec - 10 Jan	Air France
30 Dec - 18 Jan	Aer Lingus
13 Dec - 09 Jan	Air France
16 Dec - 15 Jan	ITA Airways
30 Dec - 19 Jan	Aer Lingus
30 Dec - 08 Jan	Aer Lingus
16 Dec - 11 Jan	ITA Airways
17 Dec - 08 Jan	ITA Airways

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 678€

Return flights