United℠ Explorer Card
Dedicated Cardmember service
Whenever you call, 24 hours a day, 7 days a week, you’ll be greeted by a dedicated Customer Service specialist. From disputing a strange charge to getting details on your United Explorer Card benefits, a specialist is ready to assist.
Simply call 1-800-888-8756 for assistance, or call the International collect line at 1-512-623-7702.
In addition to paying by mail, you can pay online from the Manage your account page, or by calling 1-800-888-8756.