The national flag carrier of Bangladesh, Biman Bangladesh (BG) operates from a hub at Shahjalal International Airport (DAC) and secondary hubs at Shah Amanat International Airport (CGP) and Osmani International Airport (ZYL). The airline, which has a fleet of 12 aircraft, flies to eight domestic destinations and 15 international destinations. Most of its international flights are to points in Asia and the Middle East, although the airline also has scheduled service to London Heathrow Airport (LHR). The airline's planes feature a variety of two-cabin (Business Class and Economy Class) and three-cabin (Business Class, Premium Economy Class and Economy Class) configurations. Business Class passengers have access to the airline's Maslin Lounge when flying out of Shahjalal International Airport.