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

Return flights

11 Sep - 15 Oct	LATAM Airlines Group
04 Sep - 06 Oct	Ryanair
12 Sep - 24 Sep	LATAM Airlines Group
18 Sep - 31 Oct	Ryanair
23 Sep - 13 Oct	Wizz Air Malta
24 Sep - 08 Oct	LATAM Airlines Group
18 Sep - 18 Oct	Ryanair
09 Sep - 16 Sep	LATAM Airlines Group
15 Sep - 08 Oct	Ryanair
22 Sep - 12 Oct	LATAM Airlines Group
22 Sep - 13 Oct	LATAM Airlines Group
23 Sep - 30 Sep	LATAM Airlines Group
05 Sep - 26 Sep	ITA Airways
18 Sep - 14 Oct	LATAM Airlines Group
22 Sep - 29 Sep	LATAM Airlines Group
06 Sep - 14 Sep	Wizz Air Malta
08 Sep - 15 Sep	Air France
06 Sep - 22 Sep	TAP
12 Sep - 26 Sep	Air France
15 Sep - 21 Sep	ITA Airways

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 821€

Return flights