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

Return flights

01 Dec - 16 Dec	Avianca
04 Dec - 28 Jan	Air Canada
15 Dec - 18 Jan	Air Canada
16 Dec - 14 Jan	Air Canada
06 Dec - 11 Dec	Avianca
07 Dec - 29 Dec	Avianca
08 Dec - 29 Dec	Avianca
26 Dec - 25 Jan	Avianca
29 Dec - 19 Jan	Avianca
06 Dec - 29 Dec	Avianca
09 Dec - 23 Dec	Avianca
11 Dec - 27 Dec	Avianca
09 Dec - 21 Dec	Avianca
28 Dec - 14 Jan	Avianca
29 Dec - 16 Jan	Avianca
29 Dec - 15 Jan	Avianca
26 Dec - 16 Jan	Avianca
30 Dec - 17 Jan	Air Canada
20 Dec - 31 Dec	Vueling Airlines
20 Dec - 28 Dec	Vueling Airlines

Also check the deals for one-way flights from Paris 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 Paris to Buenos Aires in December from 891€

Return flights