MAG Osmani International Airport (IATA: ZYL, ICAO: VGSY) is third largest international airport in the country after Chittagong in Bangladesh. The airport is operated by the Civil Aviation Authority, Bangladesh (CAAB) and is served by Biman Bangladesh Airlines, the national airline which at one point earned most of its revenue from this airport.[2] Private airlines Novoair, United Airways and US-Bangla Airlines operate domestic flights to Dhaka. The vast majority of passengers using the airport are expatriate Bangladeshis and their descendants from the Sylhet Division living in the United Kingdom.