AirHint found the following cheapest return flights from Rome (FCO) to Buenos Aires (EZE) in September 2025 (see full year).

Return flights

22 Sep - 29 Sep	Delta
22 Sep - 31 Oct	Delta
20 Sep - 27 Sep	Delta
22 Sep - 07 Oct	Ethiopian Airlines
23 Sep - 21 Oct	Ethiopian Airlines
23 Sep - 28 Oct	Delta
24 Sep - 06 Oct	Delta
24 Sep - 21 Oct	Delta
22 Sep - 05 Oct	Ethiopian Airlines
25 Sep - 13 Oct	Delta
25 Sep - 31 Oct	Delta
25 Sep - 27 Sep	Delta
25 Sep - 28 Sep	Delta
25 Sep - 09 Oct	Ethiopian Airlines
24 Sep - 29 Sep	Delta
20 Sep - 30 Sep	Delta
23 Sep - 30 Sep	Delta
19 Sep - 23 Sep	LATAM Airlines Group
19 Sep - 26 Sep	LATAM Airlines Group
19 Sep - 29 Sep	Delta

Also check the deals for one-way flights from Rome to Buenos Aires 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 Buenos Aires in September from 758€

Return flights