Lock down a price
It's so annoying to book a flight and then find out that you could have gotten a much better deal. But technology is starting to provide more options to travelers with buyer's remorse. For instance, the MasterCard PriceAssure program allows cardholders to track their itinerary to see if a price change entitles them to an airline credit. The program is free to enroll for anyone with a MasterCard, and it works with any foreign or domestic flight on Delta, United, American, Continental and seven other carriers.
If the cardholder is entitled to a credit, they can claim it themselves or they can have MasterCard do the work for them for $19.95. The fee covers all the tickets on the itinerary, says Chris Aguas, vice president of new product development at MasterCard Worldwide. If for some reason MasterCard is unable to collect the airline credit, your card won't be charged the fee.