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

Return flights

03 Dec - 09 Dec	LATAM Airlines Group
11 Dec - 31 Dec	LATAM Airlines Group
26 Dec - 23 Jan	LATAM Airlines Group
26 Dec - 25 Jan	LATAM Airlines Group
27 Dec - 29 Jan	LATAM Airlines Group
25 Dec - 29 Jan	LATAM Airlines Group
11 Dec - 15 Jan	LATAM Airlines Group
01 Dec - 22 Dec	Qatar Airways
08 Dec - 16 Jan	LATAM Airlines Group
18 Dec - 08 Jan	LATAM Airlines Group
08 Dec - 15 Jan	LATAM Airlines Group
08 Dec - 12 Jan	LATAM Airlines Group
20 Dec - 27 Dec	LATAM Airlines Group
12 Dec - 29 Jan	LATAM Airlines Group
24 Dec - 30 Dec	Qantas
05 Dec - 14 Dec	Qatar Airways

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 1468€

Return flights