Flyers spend more money on alcohol than any other in-flight purchase, according to data collected by onboard technology company GuestLogix, which tracked 8 million transactions across five U.S. airlines between November 2013 and March 2014. Sales of liquor, beer and wine account for 57 percent of all sales during the four-month period. Liquor is overwhelming the most popular … Continue reading Booze Is the Biggest Source of In-Flight Revenue for U.S. Airlines