Flight Coverage PlusSM Claim Filing Procedures Who to Contact In the U.S., call Diners Club at 1-800-2-DINERS (1-800-234-6377) Outside the U.S., call collect (702) 869-4927 Documents Required During Filing* Claim forms and instructions will be furnished upon request when calling the above phone numbers. A dedicated Customer Service Representative will guide the caller through the process. Important Notice - Written notice of the claim must be given to Diners Club within 90 days after the occurrence of any covered loss, or as soon thereafter as reasonably possible.