AirHint found the following cheapest return flights from Toronto (YYZ) to Buenos Aires (EZE) in December 2025 (see full year).

Return flights

09 Dec - 16 Dec	Copa
05 Dec - 14 Dec	Copa
06 Dec - 14 Dec	Copa
04 Dec - 11 Dec	Avianca
16 Dec - 24 Jan	Porter Airlines (Canada) Ltd
23 Dec - 24 Jan	Porter Airlines (Canada) Ltd
24 Dec - 25 Jan	WestJet
14 Dec - 31 Dec	Porter Airlines (Canada) Ltd
23 Dec - 25 Jan	WestJet
15 Dec - 31 Dec	WestJet
14 Dec - 30 Dec	Porter Airlines (Canada) Ltd
18 Dec - 24 Jan	Flair Airlines
13 Dec - 29 Dec	Flair Airlines
12 Dec - 27 Dec	LATAM Airlines Group
31 Dec - 07 Jan	Arajet
12 Dec - 29 Dec	Air Transat
23 Dec - 09 Jan	WestJet
17 Dec - 07 Jan	Porter Airlines (Canada) Ltd
17 Dec - 08 Jan	Copa
23 Dec - 01 Jan	WestJet

Also check the deals for one-way flights from Toronto 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 Toronto to Buenos Aires in December from 583€

Return flights