AirHint found the following cheapest return flights from Ontario (ONT) to Sao Paulo (GRU) in December 2025 (see full year).

Return flights

15 Dec - 24 Dec	Volaris
25 Dec - 01 Jan	Volaris
12 Dec - 22 Dec	Volaris
23 Dec - 11 Jan	Volaris
18 Dec - 28 Dec	Volaris
26 Dec - 02 Jan	Volaris
27 Dec - 02 Jan	Volaris
18 Dec - 03 Jan	Volaris
01 Dec - 09 Dec	LATAM Airlines Group
19 Dec - 02 Jan	Volaris
23 Dec - 04 Jan	Volaris
02 Dec - 13 Dec	Avianca
11 Dec - 27 Dec	Avianca
26 Dec - 04 Jan	Volaris
21 Dec - 28 Dec	Avianca
25 Dec - 03 Jan	Avianca
04 Dec - 16 Dec	Avianca
16 Dec - 30 Dec	Avianca
13 Dec - 29 Dec	Avianca
23 Dec - 14 Jan	Avianca

Also check the deals for one-way flights from Ontario to Sao Paulo 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.

Book a cheap hotel in Sao Paulo

Cheap car rent in Sao Paulo

Cheapest return flights from Ontario to Sao Paulo in December from $1342

Return flights