A Eurowings Airbus A319-100, registration D-ABGS performing flight EW-9224 from Dusseldorf (Germany) to Gothenburg (Sweden) with 98 passengers, was enroute at FL390 about 30nm northwest of Hamburg (Germany) when the crew decided to divert to Hamburg due to a captain's windshield having cracked. The aircraft landed safely on Hamburg's runway 05 about 25 minutes after leaving FL390. The airline reported the passengers were taken to hotels and were rebooked onto other flights.