Air Canada is a participant in the TSA PreCheck program, Air Canada TSA PreCheck which grants travelers the advantage of faster security screening at airports across the United States. TSA PreCheck holders are allowed to remove their light coats, belts, and shoes, and carry-on bags only include laptops and compliance liquids. Make sure your Known Traveler Number (KTN) is entered to your reservation during check-in or in your frequent flyer profile in order to utilize TSA PreCheck with Air Canada. If you qualify, the TSA PreCheck logo will show up on your boarding pass. Flights from specific airports in Canada that are headed for the United States can use this service.