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

Return flights

20 Jan - 20 Feb	Delta
29 Jan - 24 Feb	LATAM Airlines Group
10 Jan - 22 Jan	Delta
15 Jan - 23 Jan	Delta
10 Jan - 27 Jan	Delta
11 Jan - 25 Jan	Delta
12 Jan - 15 Feb	Delta
12 Jan - 16 Feb	Delta
19 Jan - 08 Feb	Delta
22 Jan - 16 Feb	Delta
21 Jan - 03 Feb	Delta
21 Jan - 04 Feb	Delta
01 Jan - 28 Feb	LATAM Airlines Group
17 Jan - 31 Jan	Delta
09 Jan - 11 Jan	Delta
04 Jan - 28 Feb	Air France
05 Jan - 21 Jan	Air France
05 Jan - 11 Jan	Delta
05 Jan - 12 Jan	Delta
06 Jan - 06 Jan	Air France

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 $988

Return flights