Boundary Bay Airport (IATA: YDT, ICAO: CZBB) is located beside Boundary Bay and 2.5 NM (4.6 km; 2.9 mi) east of Ladner in Delta, British Columbia, Canada, south 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 8th busiest airport by total aircraft movements, and the country's third busiest general aviation airport, behind Montreal-Saint Hubert and Toronto-Buttonville. It is the location of the former Canadian Forces Station Ladner.
In December 2004, Boundary Bay Airport was acquired by Alpha Aviation. In April 2008, Alpha Aviation established a Fixed-Base Operation (FBO) and Alpha Executive Air began operating regularly scheduled flights twice daily between Boundary Bay Airport and Victoria International Airport on Vancouver Island, as well as charter service using turbine pressurized aircraft. Many smaller airlines use Boundary Bay Airport's maintenance facilities. As of 2010, Alpha Executive Air ceased operations but Alpha Aviation's FBO is open serving business, corporate, and general aviation customers.
The airport is classified as an airport of entry by NAV CANADA and is staffed by the Canada Border Services Agency. CBSA officers are available on call to handle entry for general aviation aircraft carrying no more than 15 passengers.