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

Return flights

15 Dec - 15 Jan	WestJet
30 Dec - 20 Jan	WestJet
06 Dec - 13 Dec	WestJet
11 Dec - 24 Dec	WestJet
13 Dec - 19 Dec	WestJet
22 Dec - 29 Dec	WestJet
01 Dec - 15 Dec	WestJet
15 Dec - 19 Dec	WestJet
15 Dec - 02 Jan	WestJet
01 Dec - 29 Dec	WestJet
08 Dec - 15 Dec	WestJet
11 Dec - 15 Dec	WestJet

Also check the deals for one-way flights from Waterloo to Sydney 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 Waterloo to Sydney in December from $2578

Return flights