The first one you should be fine on as you still have a good 2 hours, 15 minutes. I have checked in as late as an hour before departure time for flights back to the United States (including a few from Latin America) and have never had a problem.

On the second one I am not clear if you are arrving CDG at 9:00am or departing PRG at 9:00am? If you are arriving then you will be fine (even though CDG is a sucky airport).