European aviation
Most European aviation is currently entirely shut down. Not wholly and entirely - there are repatriation flights going on, cargo as well. But passenger flights for business or pleasure are just not happening. This is a greater restriction than is happening inside the US.
Part of the problem is that few wish to fly at present, part is that many nations are not allowing flights to cross those national boundaries. There certainly isn't the general desire to travel sufficient to keep the normal schedule flying, but over and above that reduced demand, there