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

Return flights

02 Dec - 14 Dec	United
06 Dec - 14 Dec	United
06 Dec - 21 Dec	United
31 Dec - 11 Jan	United
29 Dec - 11 Jan	United
30 Dec - 11 Jan	United
25 Dec - 08 Jan	United
25 Dec - 07 Jan	United
17 Dec - 24 Dec	Air France
27 Dec - 08 Jan	United
04 Dec - 04 Jan	Norse Atlantic Airways
24 Dec - 08 Jan	United
24 Dec - 07 Jan	United
23 Dec - 07 Jan	United
19 Dec - 31 Dec	Iberia

Also check the deals for one-way flights from Rome 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 Rome to San Jose in December from $866

Return flights