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

Return flights

09 Sep - 23 Oct	LATAM Airlines Group
08 Sep - 23 Oct	Ryanair
08 Sep - 22 Oct	Ryanair
13 Sep - 23 Oct	Transavia France
23 Sep - 21 Oct	TAP
22 Sep - 22 Oct	Wizz Air Malta
29 Sep - 29 Oct	Wizz Air Malta
07 Sep - 22 Oct	Wizz Air Malta
17 Sep - 10 Oct	Wizz Air Malta
09 Sep - 31 Oct	Ryanair
08 Sep - 23 Sep	Ryanair
07 Sep - 20 Sep	TAP
12 Sep - 19 Sep	TAP
17 Sep - 24 Sep	Wizz Air Malta
13 Sep - 28 Sep	Transavia France
10 Sep - 21 Sep	Wizz Air Malta
15 Sep - 23 Sep	Ryanair
11 Sep - 23 Sep	Transavia France
13 Sep - 26 Sep	Wizz Air Malta
20 Sep - 30 Sep	TAP

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 $956

Return flights