AirAsia Berhad () is a Malaysian low-cost airline headquartered in Kuala Lumpur, Malaysia. It has been named as the world's best low-cost airline, and a pioneer of low-cost travel in Asia. AirAsia group operates scheduled domestic and international flights to 100 destinations spanning 22 countries. Its main hub is the Low-Cost Carrier Terminal (LCCT) at Kuala Lumpur International Airport (KLIA). Its affiliate airlines Thai AirAsia, Indonesia AirAsia, Philippines AirAsia, AirAsia Japan and AirAsia Zest have hubs in Don Mueang International Airport, Soekarno–Hatta International Airport, Clark International Airport, Narita International Airport, Ninoy Aquino International Airport and Mactan-Cebu International Airport respectively. AirAsia's registered office is in Petaling Jaya, Selangor while its head office is at Kuala Lumpur International Airport. AirAsia operates with the world's lowest unit cost of US$0.