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

Return flights

23 Sep - 03 Oct	Ryanair
16 Sep - 21 Sep	Ryanair
22 Sep - 01 Oct	Wizz Air Malta
17 Sep - 24 Sep	Wizz Air Malta
17 Sep - 26 Sep	Ryanair
17 Sep - 25 Sep	Ryanair
18 Sep - 25 Sep	Wizz Air Malta
15 Sep - 25 Sep	Condor
19 Sep - 27 Sep	Wizz Air Malta
13 Sep - 20 Sep	Wizz Air Malta
20 Sep - 27 Sep	Wizz Air Malta
14 Sep - 22 Sep	Wizz Air Malta
25 Sep - 02 Oct	Wizz Air
21 Sep - 01 Oct	Wizz Air Malta
02 Sep - 01 Oct	Ryanair

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.

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Cheapest return flights from Rome to San Juan in September from $691

Return flights