It's becoming clear that domestic leisure travel will be the first to make a comeback. It will look different as passengers might be required to wear masks and other mitigation tactics, but the general public will be okay with a set amount of risk (more and more people are getting out and about here in "high risk" FL). Hopefully international travel won't be too far behind, but that is going to largely depend on whatever limiting policies remain in specific countries.
Corporate travel, however, is going to take a hit until we have an effective vaccine. Fortunately that doesn't affect us here at Spirit, but the legacies are going to be hurting for awhile. Facebook just announced no more large events thru June 2021.
https://www.cnbc.com/2020/04/16/zuck...june-2021.html
For the foreseeable future, I think this is going to become the new normal for corporate America. The social justice warriors will create some kind of social responsibility campaign and pressure large companies to limit travel and large gatherings which are not absolutely required. Large companies will have a gun held to their head and be forced to either participate or face mass amounts of public scrutiny and boycotts, much like we see with the alphabet people every June and the inundation of pink every October. I don't think it will be permanent but it will likely prevail in the interim until we get a vaccine.