Hamilton John C. Munro International Airport, located in Hamilton, Canada, is the busiest airport in the Greater Toronto Area and the busiest airport in the province of Ontario. The airport is named after Hamilton native John C. Munro, who was a former Member of Parliament and Cabinet Minister in the federal government.

The airport, which is officially designated as the Hamilton International Airport, opened in 1940 as an auxiliary airport to the nearby Toronto International Airport. It was originally known as the Hamilton-Wentworth Airport and was designed to be used as a military training base. In the 1950s, it was renamed the Mount Hope Airport in recognition of the nearby town of Mount Hope.

In 1967, the airport was renamed the Hamilton International Airport, to reflect the growing importance of the facility as an international gateway. In 1998, the airport was officially renamed the Hamilton John C. Munro International Airport, in honour of John C. Munro's contribution to the development of the city of Hamilton and the province of Ontario.

The airport code for Hamilton International Airport is YHM, which stands for Hamilton Municipal Airport. The airport is served by a number of major airlines, including WestJet, Air Canada, United Airlines, and Porter Airlines. The airport has an average of 75 flights a day, with more than 1 million passengers per year.

The airport is home to a variety of services, including a 24-hour operations centre, a 9,000 square foot terminal, a 9,000 square foot cargo facility, and a variety of shops and restaurants. The airport also has a number of amenities, such as a pet relief area, a children's play area, and a variety of entertainment options.

The Hamilton John C. Munro International Airport has become an important hub for the people of Hamilton and the surrounding region. With its convenient location, modern facilities, and extensive services, the airport continues to be an important part of the Hamilton community.