If you are looking for airfares Sydney Hong Kong or any other destination, it pays to research well so as to save as much money as possible.
Although some local agents do have access to good fares it also pays – and literally! – to spend as long as possible trawling through the internet to look at the various options. Often you can find good deals through the smaller or lesser known carriers, and as long as they have a good safety record, there is no reason why you should not take advantage of this.
It also pays to be flexible, as moving your flights just a few days can impact enormously on the price. If you are not limited to direct flights, all the better. It may mean a longer flight and more waiting around airports but if you save enough money it will be well worth it. Another option to look at is less well known airports in a city, or even flying to a city close enough to connect to by bus.
There are numerous cheap flight websites around, many of which allow you to compare prices between the carriers. Subscribe to their newsletters so that you know when the sales are coming up. The keywords are research and flexibility in order to maximise your savings.