It depends how you want to travel.
If you want low cost you can do most of Europe, USA and country (area's) within Asia. Virgin have already set up in Australia and are setting up in the USA.
To do long distance flights ie Europe to USA, Africa, South America, Australia there are special fares available through sites such asExpedia and opodo. Just select a number of flights and try to set up short range on Low cost.
its now possible to fly coast to coast in USA by low cost. Southwest, Jetblue etc have good networks.
