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

Return flights

19 Jan - 04 Feb	LATAM Airlines Group
20 Jan - 19 Feb	LATAM Airlines Group
13 Jan - 26 Feb	LATAM Airlines Group
13 Jan - 06 Feb	Wizz Air
20 Jan - 20 Feb	Air Europa
19 Jan - 26 Jan	LATAM Airlines Group
06 Jan - 04 Feb	LATAM Airlines Group
12 Jan - 08 Feb	LATAM Airlines Group
19 Jan - 08 Feb	LATAM Airlines Group
15 Jan - 05 Feb	LATAM Airlines Group
14 Jan - 05 Feb	LATAM Airlines Group
22 Jan - 31 Jan	LATAM Airlines Group
15 Jan - 30 Jan	LATAM Airlines Group
16 Jan - 29 Jan	LATAM Airlines Group
09 Jan - 31 Jan	Vueling Airlines
10 Jan - 22 Jan	Ryanair
01 Jan - 12 Jan	TAP
01 Jan - 20 Jan	LATAM Airlines Group
05 Jan - 19 Jan	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.

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Cheapest return flights from Lisbon to Buenos Aires in January from $1156

Return flights