Sinus lift and flying

I am going to have a dental bone graft in my upper jaw. I am flying to Budapest to get the treatment. The dental bone graft involves a sinus lift.

I have been told after having a sinus lift you shouldn't do anything that will rapidly raise or lower pressure in your sinuses such as flying.

The problem I am having is the conflicting advice on the number of days I have to wait before flying back home.

After having my dental bone graft and sinus lift how many days should I wait before flying back home?