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

Return flights

01 Dec - 10 Dec	LOT
02 Dec - 11 Dec	LOT
02 Dec - 13 Dec	LOT
01 Dec - 14 Dec	LOT
16 Dec - 13 Jan	Wizz Air
30 Dec - 18 Jan	LOT
15 Dec - 31 Dec	LOT
15 Dec - 22 Dec	LOT
12 Dec - 11 Jan	LOT
29 Dec - 09 Jan	LOT
27 Dec - 05 Jan	Qatar Airways
27 Dec - 10 Jan	Qatar Airways
23 Dec - 03 Jan	Qatar Airways
23 Dec - 04 Jan	Qatar Airways
21 Dec - 04 Jan	Qatar Airways
19 Dec - 12 Jan	LOT

Also check the deals for one-way flights from Warsaw 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 Warsaw to Buenos Aires in December from $1168

Return flights