Lufthansa Airlines Improves on May Passenger Traffic CheapOair Staff June 10, 2011 general Lufthansa Builds on May Passenger Traffic Lufthansa released its traffic numbers for May Friday, showcasing an 11.3 percent increase (up to six million) over May of last year. While the airline overall improved, its load factor dropped 1.3 percent to 78.7 percent this May compared to last year’s. Source: Fox Business