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

Return flights

13 Sep - 29 Sep	LATAM Airlines Group
02 Sep - 29 Sep	LATAM Airlines Group
02 Sep - 30 Oct	LATAM Airlines Group
01 Sep - 01 Oct	LATAM Airlines Group
03 Sep - 29 Oct	LATAM Airlines Group
11 Sep - 24 Oct	Ryanair
04 Sep - 16 Oct	Wizz Air Malta
06 Sep - 16 Oct	Ryanair
06 Sep - 08 Oct	Ryanair
22 Sep - 29 Sep	LATAM Airlines Group
22 Sep - 07 Oct	LATAM Airlines Group
15 Sep - 30 Oct	LATAM Airlines Group
11 Sep - 14 Sep	Ryanair
21 Sep - 30 Sep	TAP
04 Sep - 26 Sep	LATAM Airlines Group
10 Sep - 17 Sep	Air Europa
12 Sep - 26 Sep	LATAM Airlines Group
22 Sep - 28 Sep	TAP
18 Sep - 29 Sep	LATAM Airlines Group
18 Sep - 07 Oct	LATAM Airlines Group

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 $960

Return flights