AirHint found the following cheapest one-way flights from Sydney (SYD) to Helsinki (HEL) in December 2025 (see full year).

One-Way flights

10 Dec	Batik Air Malaysia
06 Dec	Batik Air Malaysia
11 Dec	Batik Air Malaysia
30 Dec	Xiamen Airlines
07 Dec	Turkish Airlines
23 Dec	Finnair
15 Dec	British Airways
16 Dec	British Airways
21 Dec	Finnair

Also check the deals for return flights from Sydney to Helsinki 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 one-way flights from Sydney to Helsinki in December from $672

One-Way flights