No planes were taking off or landing at Berlin’s airport, while some departures were affected in Hamburg on Friday morning, due to IT outages.
Similar failures were being reported across the world, affecting airlines and airports, media outlets, banks and telecommunication companies in countries including Spain, Australia, India and Britain.
In the U.S., the Federal Aviation Administration has reportedly stopped flights by major airlines United, American and Delta.
The European budget airlines Ryanair said it has also had its operations disrupted.
A spokeswoman for Berlin Brandenburg Airport said there “are delays in handling due to a technical fault’’ and that flight operations would be suspended until 10 a.m. (0800 GMT).
Local broadcaster RBB reported there was a server failure, but the spokeswoman would not confirm this.
At Hamburg Airport, four airlines were suffering from tech failures at
A spokeswoman said the airlines were Eurowings, Ryanair, Vueling and Turkish airlines.
She said the airlines were issuing tickets manually.