Starting on Sunday, February 1, a new policy will kick in that could affect 6% of U.S. travelers trying to board flights. Traveling soon? If you’re planning on flying domestically, starting February 1, which is next Sunday, you may have to pay an extra fee at airports across the U.S. if you haven’t yet gotten your TSA-approved Real ID yet, or don’t have another compliant form of ID (see list below).