Flying is cheaper than catching the bus
In Thailand for instance, you can fly from Bangkok to Phuket for about $30 on Air Asia, a Malaysian budget airline. Sometimes, Air Asia has incredibly cheap sales that bring the prices of flights down to as low as $10!
In Europe, you can choose airlines like Ryanair that offer incredibly inexpensive airline tickets to many European cities. You’re able to go from London to Paris for $50, so long as you do not mind has no preselected seats and a very strict weight limit.
Where do you find cheap flights like these in the USA? It’s not as easy but still, with companies like Jet Blue you can find some decent deals. The trick is to purchase tickets well in advance or take advantage of real cheap last minute deals.