Osmani International Airport Sylhet (Bengali: ওসমানী আন্তর্জাতিক বিমানবন্দর সিলেট, Osmānī Antorjatik Bimanbondor) (IATA: ZYL, ICAO: VGSY) in Sylhet, is the third largest airport in Bangladesh after Dhaka and Chittagong. The airport is operated by the Civil Aviation Authority and is served by Biman Bangladesh Airlines, the national airline, which at one point earned most of its revenue from this airport. Private airlines Novoair and US-Bangla Airlines operate domestic flights to Dhaka.