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

Return flights

05 Dec - 26 Jan	Delta
04 Dec - 08 Dec	Delta
05 Dec - 08 Dec	Delta
02 Dec - 09 Dec	Air Europa
01 Dec - 10 Dec	Air Canada
05 Dec - 15 Dec	United
15 Dec - 13 Jan	United
12 Dec - 13 Jan	United
01 Dec - 05 Dec	KLM
14 Dec - 13 Jan	United
05 Dec - 18 Dec	Air France
16 Dec - 13 Jan	United
29 Dec - 18 Jan	Iberia
30 Dec - 11 Jan	Ryanair
27 Dec - 11 Jan	easyJet
13 Dec - 13 Jan	Iberia
18 Dec - 11 Jan	Wizz Air Malta
22 Dec - 30 Dec	British Airways
22 Dec - 29 Dec	British Airways
21 Dec - 31 Dec	United

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 $790

Return flights