Do I need to have Covid 19 test result while departing USA?

Depending What Country you are Traveling to..

It depends on which airline you are taking, just confirm with your airline. But for arrival you need it.

Depends on where you are going

You don't need to have for departure

Depends on where you're goin

No need for one, but maybe the country your will travel.yes, check first

You won't need it for departure

I don't think so. But will need it when you return