It’s a busy airport because it is a hub for Delta and Spirit.
Last year, it handled 37 million passengers and 397,000 movements, and had 1,100 flights a day.
It is not as busy as D TW.YYZ, which is the hub of a country.
It is Canada’s largest city and is a good location for connections. Last year, YYZ had 50 million passengers and about 453,000 movements, which is 1,240 flights a day.
The hub for an entire nation and the entry point for that country from many parts of the world would make YYZ a busy airport.
The Main Detroit airport is a busy airport for flights to all sorts of destinations across the United States.