Cheapest return flights from Montreal to Sydney in September from 811€

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

Return flights

10 Sep - 17 Sep WestJet
12 Sep - 19 Sep WestJet
11 Sep - 14 Sep Porter Airlines (Canada) Ltd
16 Sep - 15 Oct Porter Airlines (Canada) Ltd
03 Sep - 10 Sep Porter Airlines (Canada) Ltd
13 Sep - 20 Sep WestJet
02 Sep - 19 Sep Porter Airlines (Canada) Ltd
14 Sep - 21 Sep WestJet
23 Sep - 30 Sep WestJet
17 Sep - 24 Sep Porter Airlines (Canada) Ltd
28 Sep - 05 Oct WestJet
22 Sep - 29 Sep Air Transat
24 Sep - 01 Oct Porter Airlines (Canada) Ltd
26 Sep - 03 Oct Porter Airlines (Canada) Ltd
25 Sep - 06 Oct Porter Airlines (Canada) Ltd
29 Sep - 06 Oct WestJet
25 Sep - 02 Oct Porter Airlines (Canada) Ltd
27 Sep - 04 Oct Porter Airlines (Canada) Ltd
30 Sep - 07 Oct United

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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