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

Return flights

14 Aug - 21 Aug	JetSmart
14 Aug - 22 Aug	JetSmart
14 Aug - 16 Aug	JetSmart
14 Aug - 24 Aug	JetSmart
23 Aug - 01 Sep	Aerolineas Argentinas
14 Aug - 26 Aug	JetSmart
14 Aug - 27 Aug	JetSmart
14 Aug - 03 Sep	JetSmart
06 Aug - 21 Aug	JetSmart
14 Aug - 30 Aug	Aerolineas Argentinas
10 Aug - 21 Aug	JetSmart
23 Aug - 31 Aug	Aerolineas Argentinas
14 Aug - 03 Sep	JetSmart	direct
30 Aug - 08 Sep	JetSmart
23 Aug - 01 Sep	Aerolineas Argentinas	direct
30 Aug - 16 Sep	JetSmart
20 Aug - 08 Sep	JetSmart
21 Aug - 08 Sep	JetSmart
30 Aug - 03 Sep	JetSmart
28 Aug - 08 Sep	JetSmart

Also check the deals for one-way flights from Lima to Buenos Aires in August.

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 August from $354

Return flights