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

Return flights

24 Sep - 30 Sep	jetBlue
09 Sep - 21 Sep	jetBlue
10 Sep - 21 Sep	Avianca
03 Sep - 21 Sep	jetBlue
24 Sep - 01 Oct	Air France
16 Sep - 30 Sep	KLM
06 Sep - 19 Sep	Air France
15 Sep - 22 Sep	Air France
25 Sep - 25 Oct	Air France
15 Sep - 20 Sep	Air France
20 Sep - 28 Sep	Air France
09 Sep - 18 Sep	Air France
27 Sep - 11 Oct	Iberojet
25 Sep - 02 Oct	United

Also check the deals for one-way flights from San Jose to Rome 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 San Jose to Rome in September from $748

Return flights