AirHint found the following cheapest return flights from Lisbon (LIS) to Buenos Aires (AEP) in January 2026 (see full year).

Return flights

20 Jan - 09 Feb	Azul Airlines
20 Jan - 03 Feb	Azul Airlines
20 Jan - 20 Feb	Azul Airlines
21 Jan - 28 Jan	LATAM Airlines Group
16 Jan - 06 Feb	LATAM Airlines Group
15 Jan - 28 Jan	LATAM Airlines Group
15 Jan - 01 Feb	LATAM Airlines Group
19 Jan - 27 Jan	Azul Airlines
16 Jan - 26 Jan	LATAM Airlines Group
01 Jan - 26 Feb	LATAM Airlines Group
16 Jan - 27 Jan	LATAM Airlines Group
17 Jan - 31 Jan	Azul Airlines
13 Jan - 03 Feb	Azul Airlines
18 Jan - 24 Jan	Azul Airlines
13 Jan - 25 Jan	LATAM Airlines Group
19 Jan - 24 Jan	Azul Airlines
01 Jan - 20 Jan	easyJet
06 Jan - 02 Feb	Ryanair

Also check the deals for one-way flights from Lisbon to Buenos Aires in January.

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.

Book a cheap hotel in Buenos Aires

Cheap car rent in Buenos Aires

Cheapest return flights from Lisbon to Buenos Aires in January from $965

Return flights