CheapFlights.gr will find you the cheapest flights from Beijing to Sydney, comparing the cost of the flight to Sydney with 45 agencies, 5 booking systems and 718 airlines. Where to buy Beijing - Sydney plane tickets - it's up to you.
It should be noted that depending on the number of days left before departure, the price of a ticket for a Beijing - Sydney plane can change by more than 59%.
CheapFlights.gr suggests buying air tickets Beijing - Sydney in advance, then you can choose the conditions of the flight, focusing on your wishes and financial opportunities.