I came across this awesome flight search website a few weeks ago called ‘Adioso’. At first, I thought it was nothing and then I realised the functionality and ease of use of planning travel. The search engine includes both low cost carriers ad also full cost carriers and there are options basd on for instance quickest and cheapest – with the fusion of both being the ‘best’ options.
From my searches it works great and you can even set alerts for when prices go on sale – allowing you to grab a great deal. For Australia travel, I did notice however the website doesn’t pick uo Tiger airways – but that’s a minor oversight.
Highly recommend checking it out as a useful tool to help plan your next trip!