Why Delta Air Lines Doesn’t Want Blended Winglets On Most Aircraft Anymore

By now, it is well understood that winglets are a worthwhile investment for airlines operating aircraft in the passenger aviation industry. Although the efficiency gains of such wingtip devices may seem marginal at first glance, in the race to design and build the most fuel-efficient commercial airliner, they can make all the difference, saving billions of dollars in jet fuel worldwide, according to NASA.