Air Canada Tsa Precheck As a TSA PreCheck participant, Air Canada offers qualified travelers a quicker and more convenient security screening experience at U.S. airports as well as some Canadian airports that have U.S. preclearance capabilities. Travelers can use designated lanes and forego taking off their laptops, belts, shoes, and liquids during security inspections by utilizing TSA PreCheck. Passengers must provide their Known Traveler Number (KTN) when scheduling their flight or updating their reservation subsequently in order to benefit from these benefits. For frequent travelers, this program helps to simplify the airport experience, resulting in more efficient and seamless travel.