A useful search engine for domestic flights in Australia, as well as for international flights. You can look for flights with carriers such as Jetstar, Virgin, Qantas, Air New Zealand, Etihad, Emirates and so on.
Until a few years ago Omio went under the name of Go Euro, so you may know it by this name. Omio allows you to look for the bus, train and flight connections all around Europe, with bus and train search being the most useful.
When you register and sign in at the website click on your profile info in the upper right corner and click again on “Travel Bonus”. Scroll down the page a little bit and paste this code: toml2m7o3n3b into the empty field. You’ll get 10 euros off your next trip (the minimum cost of your trip must be 40 euros and more) and we get travel credit as well.