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

Return flights

02 Dec - 11 Dec	LATAM Airlines Group
07 Dec - 28 Dec	LATAM Airlines Group
11 Dec - 15 Jan	Air Canada
27 Dec - 20 Jan	LATAM Airlines Group
24 Dec - 12 Jan	LATAM Airlines Group
03 Dec - 20 Dec	LATAM Airlines Group
30 Dec - 16 Jan	LATAM Airlines Group
28 Dec - 16 Jan	Lufthansa
23 Dec - 12 Jan	LATAM Airlines Group
29 Dec - 16 Jan	LATAM Airlines Group
09 Dec - 06 Jan	LATAM Airlines Group
23 Dec - 13 Jan	LATAM Airlines Group
27 Dec - 15 Jan	LATAM Airlines Group
03 Dec - 26 Dec	SWISS
15 Dec - 29 Dec	SWISS

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Buenos Aires in December from $1159

Return flights