The American Express Platinum Card does not provide complimentary access to United Club lounges. While the card offers extensive lounge benefits through the Global Lounge Collection—including The Centurion Lounges, Delta Sky Clubs (when flying Delta), and Priority Pass Select—United Airlines is not a participating partner. To access a United Club lounge in 2026, you would typically need a separate United Club membership, a premium United co-branded credit card, or a one-time pass. However, Platinum cardholders can use their annual $200 Airline Fee Credit to be reimbursed for United Club day passes or memberships, provided United is their selected airline. Always check the Amex app for the latest 2026 partner updates, as lounge access policies frequently evolve to manage guest capacity.