WestJet Airlines, founded in 1994 and headquartered in Calgary, Alberta, is the second-largest airline in Canada. It began operations in 1996 as a low-cost alternative to the country's major airlines. Today, WestJet operates scheduled, charter, and cargo air service, transporting more than 25 million passengers per year. The airline has a significant domestic and international network, which serves over 100 destinations across Canada, United States, Mexico, Caribbean, Europe, Asia, and Central America. WestJet has an average of 777 flights per day, solidifying its position as the eighth-largest airline in North America by frequency.

Cargo airlines are airlines mainly dedicated to the transport of cargo by air. Some cargo airlines are divisions or subsidiaries of larger passenger airlines. In 2018, airline cargo traffic represented 262,333 million tonne-kilometres with a 49.3% load factor: 52.1% for dedicated cargo operations, and 47.9% within mixed operations.