Eurowings will have six aircraft in Berlin for the summer flight schedule from the end of March 2023, said Bischof.

In the summer, the airline will offer flights to almost 30 destinations, twice as many as before.

"Others are pulling back, we are building up," he said.

British low-cost carrier easyJet has said it would reduce its fleet from 18 to 11 aircraft in Berlin, while Irish Ryanair is also thinning out its flight schedule.

(Reporting by Klaus Lauer, Writing by Miranda Murray, Editing by Rachel More)