Do we have to be vaccinated in order to fly ? For example has in going to Mexico

No vaccination required at the moment but you do need a PCR negative test with in 73 hours. Also you need the same when coming back home.

You do not need to be vaccinated to fly but the destination can require it. Mexico does not. But it does look like you need a negative test to return. You should check with the airline

Not at the present time....just need a mask