Travel chaos reigns supreme at Frankfurt airport, Lufthansa's main hub, after the German airline giant was forced to cancel or delay flights over a major IT outage caused by construction work in Frankfurt. Lufthansa had earlier stopped most planes from landing to avoid overcrowding as thousands of passengers were unable to board flights. "It's chaos: no more flights, no information. And now there are kilometre-long queues, everyone is trying to change their reservation," one passenger trying to get to Barcelona said.
