Air travelers will find Wi-Fi available on about two-thirds of flights on U.S. airlines and about a quarter of flights worldwide,

according to data published Monday by Routehappy, based on analysis of a "global schedule on a typical midweek travel day." Among the U.S. legacy carriers, Delta Air Lines offers the most flights with Wi-Fi, and United Airlines has the most international planes with Wi-Fi service, Routehappy reported. Based on percentage of total flights, Virgin America, Southwest Airlines and Delta boasted the highest levels of Wi-Fi availability. Among non-U.S. carriers, Norwegian Airlines and Icelandair had the highest percentage of international flight miles on which Wi-Fi service was offered, according to Routehappy.