Hundreds of flights canceled: Passengers at Munich Airport also affected. Lufthansa estimates that more than 100,000 customers could be affected.

The strike is scheduled to last until 7:10 a.m. on Wednesday, February 21st in certain areas of the company. The airline plans to operate only 10 to 20 percent of its planned program of around 1,000 flights on Tuesday. The warning strike is in connection with the group-wide collective bargaining for, according to Verdi, around 25,000 ground employees.