There are a few ways to receive complimentary CLEAR membership. The Amex Platinum card, Amex Business Platinum card, and Amex Green card each offer a $189 statement credit for CLEAR Plus membership reimbursement. Delta Diamond Medallion and Delta 360° elite members and United 1K Premier and Global Services elite members receive complimentary CLEAR membership. You may also receive a free short-term trial CLEAR membership when referred by someone who currently has a CLEAR membership.