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

Return flights

10 Dec - 13 Jan	Delta
08 Dec - 22 Dec	Air France
07 Dec - 14 Dec	United
01 Dec - 15 Dec	United
05 Dec - 21 Dec	KLM
04 Dec - 21 Dec	Air France
24 Dec - 07 Jan	United
28 Dec - 07 Jan	Air France
22 Dec - 09 Jan	Air France
27 Dec - 10 Jan	Norse Atlantic Airways
22 Dec - 07 Jan	Air France
09 Dec - 02 Jan	Delta
26 Dec - 08 Jan	United
26 Dec - 06 Jan	United
21 Dec - 05 Jan	Air France

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.

Book a cheap hotel in San Jose

Cheap car rent in San Jose

Cheapest return flights from Rome to San Jose in December from 678€

Return flights