There is no way I would get on an airplane or cruise or even stay in a hotel/motel until a vaccine is ready. I would be concerned about buses and trains also. This puts a plus in having a motorhome to travel in. But I am retired so I have plenty of time.
I understand that a lot of people have to fly for their work. In their case I would wear a mask whether it was required or not. Are the airlines spreading out the passengers to try to social distancing?