AirHint found the following cheapest return flights from Montreal (YUL) to Brisbane (BNE) in December 2025 (see full year).

Return flights

06 Dec - 13 Dec	Air Canada
07 Dec - 14 Dec	Air Canada
23 Dec - 30 Dec	Qantas
09 Dec - 16 Dec	Qantas
05 Dec - 12 Dec	Air Canada
08 Dec - 15 Dec	Air Canada
25 Dec - 01 Jan	Air Canada
11 Dec - 18 Dec	Porter Airlines (Canada) Ltd
10 Dec - 17 Dec	Air Canada
24 Dec - 31 Dec	Air Canada
16 Dec - 23 Dec	Qantas
22 Dec - 17 Jan	WestJet
20 Dec - 01 Jan	Air Canada
19 Dec - 01 Jan	Air Canada
22 Dec - 11 Jan	Porter Airlines (Canada) Ltd
30 Dec - 06 Jan	Air Canada
29 Dec - 05 Jan	Air Canada
31 Dec - 07 Jan	WestJet
27 Dec - 03 Jan	Air Canada
28 Dec - 04 Jan	Air Canada

Also check the deals for one-way flights from Montreal to Brisbane 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 Montreal to Brisbane in December from $1519

Return flights