Very disappointing AirAsia experience.
AirAsia refused to let my wife board her Kuala Lumpur–Bangkok flight because of a small dent on the outside cover of her passport, even though the information page was completely undamaged. The staff claimed immigration would fine the airline, but we have traveled worldwide with the same passport on other airlines without any problems. On another AirAsia flight from Bangkok to Cambodia, a passenger’s bag weighed only 7.2 kg, just 200 grams over the limit, yet he was charged $53 and forced to check it into the hold. AirAsia also suggested that my wife buy another same-day ticket costing around $2,000. These experiences made the airline seem more focused on collecting extra money than providing reasonable customer service. Be very cautious before booking with AirAsia.