Lost Data

• Sometimes an airline can actually lose track of an e-ticket due to a glitch in the system. According to a June 16, 2011, report by travel agent Janice Hough on ConsumerTraveler.com, her customer tried to check in online but the system replied with "no electronic ticket found." Luckily, Hough helped straightened out the mess in a series of phone calls and emails, but other travelers might not be so lucky. By bringing as much information with them to the airport as they can -- including a printed copy of the receipt, flight itinerary and a valid photo ID, such as a driver's license or a passport -- travelers can prove they purchased their tickets.