German airline Lufthansa does not expect operations to return to normal until next year and said reducing the number of flights in the only solution at the moment. “Unfortunately, we will hardly be able to realistically achieve a short-term improvement now in the summer,” Lufthansa board member Detlef Kayser told Die Welt newspaper. This is not only a problem in Germany, but around the world, Kayser said. “We expect the situation to return to normal by 2023,” he added. Lufthansa is cancelling 2,200 additional flights at its Frankfurt and Munich hubs due to staff shortages. Two weeks ago, the c…