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

Return flights

06 Dec - 07 Dec	JetSmart
05 Dec - 10 Dec	JetSmart
12 Dec - 14 Dec	JetSmart	direct
07 Dec - 10 Dec	JetSmart	direct
08 Dec - 10 Dec	JetSmart	direct
06 Dec - 08 Dec	JetSmart	direct
07 Dec - 15 Dec	JetSmart	direct
06 Dec - 10 Dec	JetSmart	direct
08 Dec - 14 Dec	JetSmart	direct
08 Dec - 13 Dec	JetSmart	direct
17 Dec - 05 Jan	JetSmart
17 Dec - 05 Jan	JetSmart	direct
15 Dec - 05 Jan	JetSmart
16 Dec - 05 Jan	JetSmart
15 Dec - 05 Jan	JetSmart	direct
16 Dec - 05 Jan	JetSmart	direct
31 Dec - 09 Jan	JetSmart	direct
31 Dec - 08 Jan	JetSmart	direct
31 Dec - 18 Jan	JetSmart	direct
31 Dec - 11 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 280€

Return flights