Whilst a vaccine is a long way off, if at all, a return to a more normal life in the near future will be dependent upon improvements in testing, treatments and tracking.
No doubt more sophisticated and timely tests will become available that will enable travel to open up again. It’s probably more up to how society will react to such measures. Would you accept being screen tested before you got on a flight? Disembarking? Test positive and you are taken to quarantine (perhaps paid for by ticket levies). Would you be willing to be tracked so that contact tracing could be done efficiently? Lots of big brother stuff here.
Treatments should also improve significantly over the coming months, as long as the health system doesn’t get overloaded, treatments will improve outcomes with better facilities, equipment and new drugs.
I do have confidence that life will return to a new normal in around 6mths and that will include the ability to travel and enjoy life.