Cheapest return flights from Montreal to Sydney in December from $1427

Best time to book flights for Montreal (YUL) to Sydney (SYD) flights at AirHint

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

Return flights

02 Dec - 09 Dec Air New Zealand
01 Dec - 08 Dec Air New Zealand
03 Dec - 10 Dec Air New Zealand
04 Dec - 11 Dec United
08 Dec - 15 Dec Air New Zealand
05 Dec - 12 Dec United
07 Dec - 14 Dec Air New Zealand
09 Dec - 16 Dec Air New Zealand
06 Dec - 13 Dec Air New Zealand
24 Dec - 31 Dec Air New Zealand
30 Dec - 06 Jan Air New Zealand
31 Dec - 07 Jan Air New Zealand
24 Dec - 09 Jan Air New Zealand
25 Dec - 10 Jan Air New Zealand
25 Dec - 01 Jan Air Canada
25 Dec - 08 Jan Air Canada
22 Dec - 11 Jan Air Canada
26 Dec - 02 Jan Cathay Pacific
28 Dec - 04 Jan Cathay Pacific
29 Dec - 05 Jan Cathay Pacific

Also check the deals for one-way flights from Montreal to Sydney in December.

Skyscanner

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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