No one is going to fly except if they need to
Of course it depends where you are located ,but in the 4 European countries I have family in and currently spend my time , this is very much the spirit. Most people I interact with say they will go on holidays inside their country this year. The older generation is not going to go abroad and risk quarantine in a foreign country they do not speak the language and with inferior medical services already overloaded.
As to business travel, both the organisation I work for and the ones I interact with have canceled all physical meetings until end on the year.
I do not mention this out of fear, but sometimes you have to face the facts .