
There are several airports in Ontario, Canada. The busiest airport in the province is Toronto Pearson International Airport, located in Mississauga, Ontario. It is the largest airport in Canada, handling 46.8 million passengers in 2024. Other airports in Ontario include the Billy Bishop Toronto City Airport, Thunder Bay Airport, London International Airport, Sault Airport, Timmins Airport, Kitchener Airport, Hamilton Airport, and Ottawa Airport. These airports offer flights to various domestic and international destinations and are served by different airlines.
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What You'll Learn

Toronto Pearson International Airport
The airport is named after Lester B. Pearson (1897–1972), the 14th Prime Minister of Canada and 1957 Nobel Peace Prize laureate for his humanitarian work in peacekeeping. The former Toronto International Airport was renamed Lester B. Pearson International Airport on January 2, 1984, in his honour. The airport's IATA code, YYZ, is derived from the telegraph code for the station in Malton, Ontario, where the airport is located.
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Billy Bishop Toronto City Airport
Billy Bishop Airport is used for regional airline services, general aviation, medical evacuation flights, small charter flights, and private aviation. Jet aircraft are banned from the airport, except for MEDEVAC flights. The airport is operated by PortsToronto (formerly Toronto Port Authority) and is classified as an airport of entry by Nav Canada, with Canada Border Services Agency staff on-site.
The airport offers flights to over 20 domestic destinations, including Sault Ste. Marie, Montreal, and Northern Ontario. Airlines operating from the airport include Air Canada Express, FlyGTA Airlines, and Porter Airlines. In 2022, Billy Bishop Airport was ranked as Canada's ninth busiest airport.
The airport is named after William Avery "Billy" Bishop, a Canadian World War I flying ace and World War II Air Marshal. It was previously known as Port George VI Island Airport and Toronto City Centre Airport before being officially renamed in 2009.
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Thunder Bay Airport
The airport has a rich history, dating back to its construction as the Fort William Municipal Airport in 1938, which was partly to provide relief to the unemployed. During World War II, it served as home to the No. 2 Elementary Flying Training School, contributing to the British Commonwealth Air Training Plan. It was also utilised for test flights of fighter jets being manufactured at the nearby Canadian Car and Foundry factory. The airport underwent significant renovations in 1994, with the construction of a new terminal building, jetways, a food court, gift shop, and an arcade. In 1997, the airport was transferred from government control to the Thunder Bay International Airports Authority, a non-profit entity.
In terms of accessibility, the airport can be reached via public bus number 14 (Line Arthur), which operates every 30 minutes during the day. Additionally, vehicles can access the airport via Ontario Highway 61, with connections to the Harbour Expressway and Ontario Highway 11, providing convenient travel to and from Thunder Bay's core areas.
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London International Airport
The airport has a long history, with the city of London selecting a site for an airfield at Lambeth, Ontario, in January 1927. In 1935, the city decided to replace the original London Airport, and work began on a new airport near Crumlin in September 1939, at the start of World War II. The airport was leased to the Government of Canada, Department of Transport, in January 1940, and was used for civil and military aviation during the war. The main terminal building opened in July 1942, and the airport continued to be used by the military after World War II, with the Royal Canadian Air Force establishing RCAF Station Crumlin on part of the airport.
Today, London International Airport is home to the Jet Aircraft Museum, which operates three Canadair CT-133 Silver Stars, also known as the T-bird. The airport also offers a range of services, including Executive Aviation, Trek Aviation, and Flite Line Services London. The London International Airport Fire Crash and Rescue Station provides fire and rescue operations with three crash tenders based on Blair Boulevard.
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Sault Airport
The Sault Airport, also known as Sault Ste. Marie Airport, is located about 18 km west of Sault Ste. Marie town centre in Ontario, Canada. The airport is classified as an airport of entry by Nav Canada and is staffed by the Canada Border Services Agency (CBSA) on a call-out basis from the Sault Ste. Marie International Bridge. CBSA officers at this airport can accommodate aircraft with no more than 30 passengers.
Sault Ste. Marie Airport has frequent medevac, business aviation, and charter operations. It is also a common stopping point for private pilots. The airport is home to the Ministry of Natural Resources Fire Management Centre and Flight Training Centre, which occupies 622 square metres of space. It is the first of its kind in Ontario and is equipped with advanced flight training devices that simulate the sights, sounds, and motions of the Canadair CL-415 water bomber.
Several scheduled passenger flights operate from the airport, including Air Canada Express, Bearskin Airlines, and Porter Airlines, which offer flights to Toronto–Pearson, Toronto–Billy Bishop, Sudbury, and Thunder Bay. During the summer, Sunwing Airlines operates flights to London, Ontario, and Varadero in Cuba.
The Sault Ste. Marie Airport has seen fluctuations in passenger levels over the years. In April 2025, passenger levels were up 4.6% from the previous year but still down 22% from pre-pandemic April 2019 levels. The airport has been recovering from the impact of the COVID-19 pandemic, and in June 2025, passenger levels increased further, up 5.0% from the previous year.
The airport also hosts a flight-training campus for Sault College and the Sault Academy of Flight flying school, resulting in frequent training flights in the area.
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Frequently asked questions
Toronto Pearson International Airport is the largest and busiest airport in Canada, handling 46.8 million passengers in 2024.
Toronto Pearson International Airport has two passenger terminals.
Toronto Pearson International Airport is situated 25 kilometres (16 mi) northwest of downtown Toronto.
Other airports in Ontario include Billy Bishop Airport, Thunder Bay Airport, London International Airport, Sault Airport, Timmins Airport, and Kitchener Airport.
There are various transportation options to get to Toronto Pearson International Airport, including long-distance coach, van, and minibus shuttle services. Additionally, the airport is accessible via Highway 427 and Highway 409, with local access through Airport Road and Dixon Road.

































