No, you do not automatically get TSA PreCheck on every flight, even if you are an enrolled member with a Known Traveler Number (KTN). In 2026, the "TSA PreCheck" indicator must appear on your physical or digital boarding pass for you to use the expedited lane. Reasons it might be missing include: your airline is not a participating carrier (though over 90+ now participate), your KTN was not correctly entered into your reservation, or the TSA has performed a "random exclusion" for security purposes. Furthermore, for international travel, TSA PreCheck only applies to the departure from U.S. airports; it does not grant expedited screening in foreign countries. In 2026, the program has also evolved with "Touchless ID" at 65 major airports, which requires you to opt-in through your airline app (like Delta or United) and have a valid passport on file. If the PreCheck logo isn't on your pass, you must go through the standard security lane, even if you have a valid membership.