A two-day strike by workers at Munich Airport, Germany’s second-biggest, has started. The airport operator said Thursday that airlines had canceled about 80% of their flights to and from Munich and further cancelations were not ruled out.

Germany's Munich and Hamburg airports were hit by strikes by public sector union Verdi on Thursday and Friday, with airlines cancelling about 80% of flights in Munich.

A two-day strike by airport workers, called by the verdi trade union in a public sector wage dispute, has begun at Munich Airport. Airlines have cancelled 80% of scheduled flights for Thursday and Friday,