There are nine airports in the Greater Toronto Area. Pearson, Billy Bishop and Hamilton have scheduled passenger service; however, the vast majority of passenger traffic goes through Toronto’s Pearson International Airport, which is Canada’s busiest airport and the country’s major hub. Hamilton handles some discount flights and charters and acts as an alternative to Pearson. Billy Bishop is used for civil aviation, air ambulance traffic and regional scheduled airlines.
Buttonville formerly had scheduled passenger service from Ottawa operated by Bearskin Airlines, but it has been discontinued. Hamilton is popular with charters and discount airlines who want to avoid fees at Pearson, which is among the world’s most expensive airports. YTO is a multiple airport code that works for Pearson, City Centre, and Buttonville.
Markham Airport or Toronto/Markham Airport, (TC LID: CNU8), is a private airport operating 2.6 nautical miles (4.8 km; 3.0 mi) north of Markham, Ontario, Canada near Toronto.
The airport is owned and operated by Markham Airport Inc. and owned by a numbered Ontario company owned by the Thomson family of Toronto. The airport is not part of the Greater Toronto Airports Authority (GTAA). The airport consists of a single 2,013 ft (614 m) runway for small and private aircraft only (with night flying capabilities). The Royal Canadian Air Cadets Gliding Program uses the north side or the runway 09/27 for glider operations in the spring and fall months, and use a northern traffic pattern.