FRANKFURT—Airlines cancelled hundreds of flights to and from German airports on Monday as security workers went on strike amid a wage dispute. Security workers staged a full-day walkout at six airports including Duesseldorf, Cologne/Bonn and Berlin on Monday, and one-day strikes have also been called for other airports on Tuesday including Frankfurt and Hamburg. The strike comes as airlines are reeling from the impact of the war in Ukraine, with soaring fuel prices and airspace closures, after two years of low travel demand due to the coronavirus pandemic. The walkout by security staff has resulted in a high three-digit number of flight cancellations, German airports association ADV said. Some 160 of them were at Duesseldorf airport, accounting for more than half of the planned 290 departures and arrivals, the airport said. At Cologne/Bonn, 94 out of 136 flights were called off, and Berlin airport’s website also showed many cancelled flights. …