AirHint found the following cheapest return flights from Calgary (YYC) to Sydney (SYD) in August 2025 (see full year).

Return flights

17 Aug - 12 Sep	WestJet
13 Aug - 27 Aug	WestJet
22 Aug - 29 Aug	WestJet
01 Aug - 15 Aug	Flair Airlines
13 Aug - 17 Aug	WestJet
01 Aug - 08 Aug	Flair Airlines
18 Aug - 25 Aug	WestJet
05 Aug - 12 Aug	WestJet
15 Aug - 30 Aug	WestJet
18 Aug - 18 Sep	WestJet
13 Aug - 26 Aug	WestJet
01 Aug - 01 Sep	Flair Airlines
11 Aug - 22 Aug	United
30 Aug - 09 Sep	United

Also check the deals for one-way flights from Calgary 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 Calgary to Sydney in August from $910

Return flights