Thousands of people are stuck in airports across Germany because of a strike by Lufthansa cabin crew over pay and cost-cutting measures.
The German carrier has been forced to cancel dozens of flights but it remains optimistic of being able to resume a normal service later on Friday.
Lufthansa spokesman Klaus Walther said: “As far as we can see right now, about a quarter of flights leaving Frankfurt have been affected. The union said the action would end at 13H (CET) and we hope we’ll be able to take all passengers who planned a trip today to their destination.”
The head of the UFO cabin crew union, Nicoley Baublies, described the strike as a “huge success”.
Like other European flag carriers such as Air France-KLM, Lufthansa is fighting to reduce costs amid rising fuel prices and tough competition from low-cost and Gulf airlines.