Cheapest return flights from Montreal to Sydney in September from $1003

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 September 2025 (see full year).

Return flights

05 Sep - 22 Oct Porter Airlines (Canada) Ltd
03 Sep - 10 Sep Porter Airlines (Canada) Ltd
05 Sep - 12 Sep Porter Airlines (Canada) Ltd
02 Sep - 09 Sep Porter Airlines (Canada) Ltd
04 Sep - 11 Sep Porter Airlines (Canada) Ltd
10 Sep - 17 Sep Porter Airlines (Canada) Ltd
22 Sep - 29 Sep Qatar Airways
08 Sep - 15 Sep Porter Airlines (Canada) Ltd
09 Sep - 16 Sep Air New Zealand
16 Sep - 23 Sep Qatar Airways
19 Sep - 26 Sep WestJet
24 Sep - 01 Oct United
28 Sep - 05 Oct United
30 Sep - 07 Oct United
05 Sep - 04 Oct Air New Zealand
25 Sep - 02 Oct United
26 Sep - 03 Oct United
27 Sep - 04 Oct Air New Zealand

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

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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