Cheapest return flights from Montreal to Sydney in September from 690€

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

Return flights

05 Sep - 12 Sep WestJet
03 Sep - 10 Sep Porter Airlines (Canada) Ltd
02 Sep - 07 Sep Porter Airlines (Canada) Ltd
10 Sep - 17 Sep Porter Airlines (Canada) Ltd
02 Sep - 19 Sep Porter Airlines (Canada) Ltd
06 Sep - 16 Sep WestJet
12 Sep - 19 Sep WestJet
02 Sep - 09 Sep Porter Airlines (Canada) Ltd
06 Sep - 13 Sep WestJet
14 Sep - 21 Sep WestJet
24 Sep - 01 Oct Porter Airlines (Canada) Ltd
25 Sep - 02 Oct Porter Airlines (Canada) Ltd
16 Sep - 15 Oct WestJet
28 Sep - 05 Oct Porter Airlines (Canada) Ltd
26 Sep - 03 Oct WestJet
27 Sep - 04 Oct WestJet
29 Sep - 06 Oct Porter Airlines (Canada) Ltd

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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