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

Return flights

01 Dec - 29 Dec	Air Canada
02 Dec - 30 Dec	Air Canada
08 Dec - 20 Jan	Air Canada
10 Dec - 20 Jan	Air Canada
15 Dec - 29 Dec	Air Canada
25 Dec - 08 Jan	Delta
24 Dec - 24 Jan	Delta
11 Dec - 31 Jan	Delta
15 Dec - 30 Dec	Air Canada
15 Dec - 04 Jan	Air Canada
14 Dec - 29 Dec	Air Canada
26 Dec - 05 Jan	Air Canada
27 Dec - 03 Jan	Air Canada
11 Dec - 14 Jan	Delta
22 Dec - 29 Dec	Air Canada
22 Dec - 05 Jan	Air Canada
20 Dec - 28 Dec	Air Canada

Also check the deals for one-way flights from Sydney to Calgary in December.

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 Sydney to Calgary in December from 1109€

Return flights