AirAsia is a budget airline that flies within Asia. I have been on it several times because it's like only around 1/4 the price of normal airlines. Sometimes, if you're lucky, you might even get free airfare but not the tax though!
It's pretty reliable and very safe, except that sometimes they tend to delay their flights. That's the part I find a bit annoying.
As it is a budget airline, meaning, no food served, but they still do have food and beverages on sale although a tad pricey. I love the fact it is cheap, and also you get to choose your own seat base on a first come first serve basis, so you can have a front seat regardless of the amount you pay. Also, they run promotions almost once every 2 months!