AirHint found the following cheapest return flights from Melbourne (MEL) to Buenos Aires (AEP) in December 2025 (see full year).

Return flights

03 Dec - 24 Dec	LATAM Airlines Group
02 Dec - 09 Dec	Jetstar
11 Dec - 31 Dec	LATAM Airlines Group
03 Dec - 08 Dec	Qatar Airways
30 Dec - 12 Jan	LATAM Airlines Group
17 Dec - 31 Dec	LATAM Airlines Group
24 Dec - 19 Jan	LATAM Airlines Group
22 Dec - 19 Jan	Qatar Airways
25 Dec - 15 Jan	Qatar Airways
16 Dec - 19 Jan	Qantas
24 Dec - 24 Jan	Qantas
10 Dec - 15 Jan	Qantas
08 Dec - 15 Jan	Qantas
13 Dec - 29 Jan	Qantas
22 Dec - 22 Jan	Qantas

Also check the deals for one-way flights from Melbourne to Buenos Aires in December.

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 Melbourne to Buenos Aires in December from $1822

Return flights