My guess, >6 months until we open up much more than essential travel. At least for my country, Australia.
>12 months for tourism to get back in the swing of things.
For business I wonder if the WFH movement actually increases travel once back to normal. People can live further out or remotely so will have fly in monthly meetings type thing where they didn't before, and companies will probably look further afield for candidates.
Wildcards: New COVID strains and economic growth/contraction. Both will have a big impact on above and who knows...
Chile just opened up. Does anyone know if Argentina has similar plans?