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

Return flights

17 Sep - 16 Oct	LATAM Airlines Group
17 Sep - 17 Oct	LATAM Airlines Group
23 Sep - 21 Oct	TAP
12 Sep - 10 Oct	TAP
17 Sep - 10 Oct	LATAM Airlines Group
25 Sep - 30 Oct	LATAM Airlines Group
22 Sep - 20 Oct	LATAM Airlines Group
15 Sep - 15 Oct	TAP
16 Sep - 09 Oct	TAP
10 Sep - 14 Oct	Ryanair
18 Sep - 30 Sep	LATAM Airlines Group
12 Sep - 22 Sep	TAP
13 Sep - 27 Sep	TAP
12 Sep - 27 Sep	LATAM Airlines Group
23 Sep - 29 Sep	TAP
12 Sep - 26 Sep	LATAM Airlines Group
10 Sep - 24 Sep	TAP
17 Sep - 28 Sep	TAP
11 Sep - 19 Sep	TAP
12 Sep - 19 Sep	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 816€

Return flights