Air Canada Tsa Precheck Air Canada is a participant in TSA PreCheck, a program that provides qualified travelers at U.S. airports and some Canadian airports with U.S. preclearance facilities with accelerated security screening. Through the utilization of designated lanes and TSA PreCheck, travelers can avoid taking off their shoes, belts, laptops, and liquids while undergoing security inspections. Passengers should provide their Known Traveler Number (KTN) when purchasing their travel, or add it later, to be eligible for TSA PreCheck with Air Canada. This service makes traveling easier by streamlining and expediting the airport process.