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

Return flights

13 Dec - 21 Dec	JetSmart
09 Dec - 15 Dec	JetSmart
16 Dec - 23 Dec	JetSmart
03 Dec - 15 Dec	JetSmart
13 Dec - 15 Dec	JetSmart
12 Dec - 15 Dec	JetSmart
02 Dec - 02 Dec	LATAM Airlines Group	direct
04 Dec - 15 Dec	JetSmart
09 Dec - 16 Dec	JetSmart
21 Dec - 30 Dec	JetSmart
29 Dec - 17 Jan	JetSmart
28 Dec - 17 Jan	JetSmart
27 Dec - 17 Jan	JetSmart
30 Dec - 17 Jan	JetSmart
31 Dec - 17 Jan	JetSmart
17 Dec - 05 Jan	JetSmart
27 Dec - 01 Jan	JetSmart
21 Dec - 01 Jan	JetSmart
26 Dec - 16 Jan	Sky Airline
22 Dec - 17 Jan	JetSmart

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 293€

Return flights