Air Canada TSA PreCheck for passengers leaving American airports, Air Canada offers TSA PreCheck to qualified persons. Travelers can stay in shoes, belts, and light jackets to avoid the long security line and to keep their laptops and other liquids in their luggage. To use TSA PreCheck with Air Canada, travelers must include their Known Traveler Number (KTN) in their reservation information. This service is available to all Canadian nationals enrolled in TSA PreCheck, NEXUS, or Global Entry, as well as to US citizens and their lawful permanent residents. It significantly reduces the amount of time spent waiting in security lines, making airport travel more efficient and seamless.