Cheapest return flights from Montreal to Sydney in September from $1247

AirHint found the following cheapest return flights from Montreal (YUL) to Sydney (SYD) in September 2026 (see full year).

Return flights

01 Sep - 08 Sep United
07 Sep - 14 Sep United
09 Sep - 16 Sep United
13 Sep - 20 Sep United
15 Sep - 22 Sep United
23 Sep - 30 Sep United
02 Sep - 09 Sep United
06 Sep - 13 Sep United
08 Sep - 15 Sep United
14 Sep - 21 Sep United
29 Sep - 06 Oct United
28 Sep - 05 Oct United
30 Sep - 07 Oct United
26 Sep - 03 Oct United
27 Sep - 04 Oct United
25 Sep - 02 Oct United
24 Sep - 01 Oct Porter Airlines (Canada) Ltd

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

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