A 24-hour strike by workers at 13 German airports, including major hubs in Frankfurt and Munich, has led to the cancellation of most flights, causing widespread disruption for travellers.

BERLIN — A one-day strike by workers at 13 German airports, including the Frankfurt and Munich hubs and all the country’s other main destinations, caused the cancelation of most flights on Monday. The 24-hour walkout, which started at midnight, involves public-sector employees at the airports as well as ground and security staff.