The ver.di union called on staff at the Tegel and Schoenefeld airports to walk out from 4am on Monday until 5am on Tuesday, then extended the strike by another 24 hours until early Wednesday.
The strike follows an all-day walkout on Friday. Airport authorities said 465 departures from Tegel, the busier airport, and 195 from Schoenefeld were cancelled on Monday — most of the flights planned for the day.
Ver.di argued that another walkout was necessary because employers hadn’t reacted to the previous strike and made a new offer in their wage dispute.
Those affected by the strike included Berlin mayor Michael Mueller, who had to set off on a planned trip to Moscow from Dresden, more than 160 km away.