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

Return flights

03 Dec - 07 Dec	Qatar Airways
14 Dec - 10 Jan	Ryanair
05 Dec - 22 Dec	Turkish Airlines
13 Dec - 11 Jan	Finnair
12 Dec - 30 Dec	Finnair
06 Dec - 05 Jan	Ryanair
01 Dec - 21 Dec	Turkish Airlines
05 Dec - 18 Dec	Ryanair
15 Dec - 08 Jan	Finnair
25 Dec - 10 Jan	KLM
12 Dec - 22 Dec	Finnair
01 Dec - 01 Jan	Ryanair
12 Dec - 26 Dec	Finnair
27 Dec - 10 Jan	Finnair
02 Dec - 16 Dec	Qatar Airways
22 Dec - 05 Jan	Finnair
22 Dec - 02 Jan	Finnair
14 Dec - 04 Jan	Qatar Airways

Also check the deals for one-way flights from Helsinki 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.

Book a cheap hotel in Sydney

Cheap car rent in Sydney

Cheapest return flights from Helsinki to Sydney in December from 974€

Return flights