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

Return flights

05 Dec - 09 Dec	Delta
02 Dec - 10 Dec	Air Canada
02 Dec - 09 Dec	Air Canada
24 Dec - 31 Dec	Delta
04 Dec - 14 Dec	United
06 Dec - 14 Dec	United
14 Dec - 13 Jan	United
05 Dec - 15 Dec	United
12 Dec - 27 Dec	Air France
29 Dec - 08 Jan	United
29 Dec - 12 Jan	United
27 Dec - 27 Jan	United
31 Dec - 11 Jan	British Airways
25 Dec - 31 Dec	KLM
01 Dec - 01 Jan	Delta
30 Dec - 12 Jan	United
24 Dec - 07 Jan	Delta
30 Dec - 10 Jan	Iberia
26 Dec - 10 Jan	British Airways
22 Dec - 31 Dec	British Airways

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 695€

Return flights