July 18 (UPI) -- Delta Air Lines has begun to use AI to price tickets, charging people based on a calculation of what they should pay rather than a standard fare for all passengers. Delta said it is using AI to determine 3% of current fares charged and considers this method of pricing by personal stats to be "amazingly favorable." The company compiles the fares by using Israel-based Fetcherr AI, a Delta spokesperson told Fortune , a spokesman said. Consumer Watchdog called the determination of