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

Return flights

30 Dec - 28 Jan	Sky Airline
29 Dec - 22 Jan	Sky Airline
31 Dec - 20 Jan	JetSmart
30 Dec - 28 Jan	JetSmart	direct
25 Dec - 17 Jan	Sky Airline
26 Dec - 17 Jan	Sky Airline
25 Dec - 16 Jan	Sky Airline
30 Dec - 20 Jan	JetSmart
31 Dec - 16 Jan	JetSmart
29 Dec - 16 Jan	JetSmart
27 Dec - 31 Dec	Sky Airline
26 Dec - 31 Dec	Sky Airline
20 Dec - 24 Dec	LATAM Airlines Group
21 Dec - 24 Dec	Aerolíneas Argentinas
25 Dec - 29 Dec	JetSmart
22 Dec - 31 Dec	LATAM Airlines Group
26 Dec - 28 Dec	JetSmart
19 Dec - 23 Dec	Aerolíneas Argentinas
24 Dec - 29 Dec	Sky Airline
26 Dec - 30 Dec	Sky Airline

Also check the deals for one-way flights from Lima 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 Lima to Buenos Aires in December from 304€

Return flights