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

Return flights

31 Oct - 09 Nov	Sky Airline	direct
29 Oct - 09 Nov	Sky Airline	direct
30 Oct - 12 Nov	Sky Airline	direct
29 Oct - 03 Nov	Sky Airline	direct
31 Oct - 21 Nov	JetSmart	direct
31 Oct - 04 Nov	Sky Airline
31 Oct - 19 Nov	JetSmart
29 Oct - 19 Nov	JetSmart
29 Oct - 07 Nov	JetSmart	direct
30 Oct - 02 Nov	Sky Airline	direct
29 Oct - 31 Oct	Sky Airline	direct
29 Oct - 30 Oct	Sky Airline	direct
30 Oct - 31 Oct	JetSmart

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

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 October from $368

Return flights