AirHint found the following cheapest return flights from Lima (LIM) to Buenos Aires (AEP) in December 2026 (see full year).

Return flights

04 Dec - 13 Dec	Aerolíneas Argentinas	direct
13 Dec - 20 Dec	Aerolíneas Argentinas	direct
09 Dec - 14 Dec	Sky Airline
29 Dec - 04 Jan	LATAM Airlines Group
08 Dec - 03 Jan	LATAM Airlines Group	direct
18 Dec - 03 Jan	LATAM Airlines Group
18 Dec - 03 Jan	Sky Airline	direct
23 Dec - 08 Jan	Sky Airline	direct
21 Dec - 04 Jan	Sky Airline	direct
28 Dec - 04 Jan	Sky Airline	direct
29 Dec - 04 Jan	Sky Airline	direct

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 $363

Return flights