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

Return flights

18 Sep - 25 Sep	Norse Atlantic Airways
05 Sep - 13 Sep	Norse Atlantic Airways
14 Sep - 22 Sep	Vueling Airlines
11 Sep - 13 Sep	Norse Atlantic Airways
06 Sep - 16 Sep	Wizz Air Malta
04 Sep - 09 Sep	Ryanair
08 Sep - 19 Sep	Ryanair
01 Sep - 13 Sep	Vueling Airlines
01 Sep - 01 Oct	Lufthansa

Also check the deals for one-way flights from Rome to San Juan in September.

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 Juan

Cheap car rent in San Juan

Cheapest return flights from Rome to San Juan in September from 532€

Return flights