Boundary Bay Airport or Vancouver/Boundary Bay Airport (IATA: YDT, ICAO: CZBB) is located beside Boundary Bay and 2.5 nautical miles (4.6 km; 2.9 mi) east of Ladner in Delta, British Columbia, Canada, 8.5 NM (15.7 km; 9.8 mi) south southeast of Vancouver and close to the U.S. border. The airport, which opened 11 July 1983, serves mostly general aviation and includes facilities for aircraft maintenance, flight training, parking, and air traffic control training. Boundary Bay is Canada's 7th busiest airport by total aircraft movements, and the country's second busiest general aviation airport, behind Montreal-Saint Hubert.