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

Return flights

25 Aug - 01 Sep	ANA
30 Aug - 06 Sep	WestJet
09 Aug - 16 Aug	WestJet
23 Aug - 30 Aug	WestJet
26 Aug - 02 Sep	ANA
04 Aug - 11 Aug	United
05 Aug - 12 Aug	United
11 Aug - 18 Aug	United
02 Aug - 09 Aug	United
10 Aug - 17 Aug	United
16 Aug - 23 Aug	United
18 Aug - 25 Aug	United
24 Aug - 31 Aug	United
31 Aug - 07 Sep	United
28 Aug - 04 Sep	United

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

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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Cheapest return flights from Montreal to Sydney in August from 1288€

Return flights