Buy cheap tickets with AirAsia directly on the carrier's website airasia.com. Prices don't change much 2 weeks to 2 months before departure, but you can buy the absolute cheapest tickets during a promotion that repeats roughly two to three times a year. It is necessary to buy tickets often six months in advance. Such tickets then cost from 2 eur to 29 eur.
AirAsia flies to all major destinations across Malaysia, Indonesia, Philippines, Thailand, India, China and other countries in Southeast Asia. Long-haul routes go to Mauritius, Seychelles and Australia.
All destinations can be found on the flight map.