Global Reach   |   Now Boarding Blog   |   Services   |   ATG FRANKFURT (LUFTHANSA)  - German airline Lufthansa said on Monday it was losing at least 10 million euros ($10.8 million) a day from the longest strike in its 60-year history as cabin crew confirmed a fourth day of strikes for Tuesday. More than 110,000 passengers at Lufthansa's Frankfurt hub and the cities of Munich and Duesseldorf were affected by strikes over early retirement benefits and pensions that grounded nearly 1,000 flights on Monday. "The concrete damage will only be clear in the coming weeks when we know how many passengers claimed refunds, how many were rebooked, and how many passengers we accommodated at hotels," an airline spokesman told reporters at Frankfurt airport. The UFO labor union called on cabin crews to stage another day of strikes on Tuesday which are set to affect more lucrative long-haul flights. Stoppages could continue until Friday.     Clients scheduled to fly with Lufthansa during the affected period are advised to contact their travel provider or the airline directly to enquire about the status of their flight(s). We are closely monitoring this situation and reaching out to traveler managers / travelers who may be affected by the strike.     ATG has Customer Coaches available around-the-clock if you   need assistance with your travel plans.