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

Return flights

05 Aug - 12 Aug	ANA
11 Aug - 18 Aug	ANA
19 Aug - 26 Aug	ANA
12 Aug - 19 Aug	ANA
18 Aug - 25 Aug	ANA
25 Aug - 01 Sep	ANA
26 Aug - 02 Sep	ANA
13 Aug - 20 Aug	ANA
20 Aug - 27 Aug	ANA
27 Aug - 03 Sep	ANA
03 Aug - 10 Aug	Air Canada
09 Aug - 16 Aug	Air Canada
17 Aug - 24 Aug	Air Canada
30 Aug - 06 Sep	ANA
29 Aug - 05 Sep	Air Canada
28 Aug - 04 Sep	Air Canada
31 Aug - 07 Sep	Qatar Airways

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