Europe's aviation industry has criticized the way the crisis has been handled, accusing governments of over-reacting and waiting too long to come up with a coordinated plan.
The head of the International Air Transport Association, Giovanni Bisignani said the scale of the economic impact on aviation, reaching $1 billion, is greater than the September 11, 2001, terror attacks when U.S. airspace was closed for three days.
He called the situation "embarrassing" and a "European mess."
Germany's aviation authority on Monday announced the resumption of long-haul flights by the country's flag carrier, Lufthansa, bringing some 15,000 passengers home from East Asia, Africa and North America. And Britain has dispatched three navy ships to bring stranded passengers back home across the English Channel.
Some information for this report was provided by AP, AFP and Reuters.