Cheapest return flights from Lisbon to Buenos Aires in December from $1100

AirHint found the following cheapest return flights from Lisbon (LIS) to Buenos Aires (AEP) in December 2025 (see full year).

Return flights

01 Dec - 15 Dec LATAM Airlines Group
31 Dec - 22 Jan LATAM Airlines Group
11 Dec - 23 Jan LATAM Airlines Group
23 Dec - 26 Jan LATAM Airlines Group
30 Dec - 18 Jan LATAM Airlines Group
01 Dec - 27 Dec LATAM Airlines Group
23 Dec - 25 Jan LATAM Airlines Group
05 Dec - 19 Dec LATAM Airlines Group
30 Dec - 13 Jan LATAM Airlines Group
23 Dec - 24 Jan LATAM Airlines Group
08 Dec - 27 Dec LATAM Airlines Group
23 Dec - 23 Jan LATAM Airlines Group
30 Dec - 15 Jan LATAM Airlines Group
09 Dec - 08 Jan LATAM Airlines Group
17 Dec - 22 Dec LATAM Airlines Group

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

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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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