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

Return flights

08 Dec - 14 Dec	Norse Atlantic Airways
15 Dec - 28 Dec	Norse Atlantic Airways
04 Dec - 13 Dec	TAP
15 Dec - 21 Dec	Norse Atlantic Airways
25 Dec - 07 Jan	Lufthansa
24 Dec - 07 Jan	United
24 Dec - 09 Jan	Iberia
19 Dec - 07 Jan	Air France
20 Dec - 30 Dec	Ryanair
29 Dec - 09 Jan	British Airways
28 Dec - 07 Jan	Iberia
30 Dec - 07 Jan	Iberia
31 Dec - 12 Jan	Air France
24 Dec - 01 Jan	United
29 Dec - 07 Jan	British Airways
20 Dec - 28 Dec	Ryanair
21 Dec - 28 Dec	Norse Atlantic Airways
22 Dec - 28 Dec	Ryanair
19 Dec - 26 Dec	Delta
19 Dec - 28 Dec	Delta

Also check the deals for one-way flights from Rome to San Juan 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 Juan in December from $725

Return flights