Berlin’s airport has canceled all of its flights for Monday ahead of a labor union strike that's expected to impact thousands of flights at 11 airports across Germany.

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.