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

Return flights

25 Sep - 11 Oct	Wizz Air Malta
25 Sep - 02 Oct	Wizz Air Malta
05 Sep - 09 Sep	Ryanair
02 Sep - 01 Oct	Air France
13 Sep - 24 Sep	Wizz Air Malta
01 Sep - 22 Sep	Air France
16 Sep - 23 Sep	Norse Atlantic Airways
08 Sep - 15 Sep	Vueling Airlines
05 Sep - 21 Sep	Wizz Air Malta
13 Sep - 26 Sep	Norse Atlantic Airways
14 Sep - 20 Sep	Wizz Air Malta
05 Sep - 14 Sep	Wizz Air Malta
01 Sep - 10 Sep	Norse Atlantic Airways
22 Sep - 05 Oct	United
28 Sep - 02 Oct	Air France

Also check the deals for one-way flights from Rome to San Jose 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 Jose in September from $623

Return flights