How soon do I need to get to the airport since I am leaving out in the morning 6:45?

I drive a taxi, do you need a ride

Pending on who you are flying with, 90 minutes should be safe...

I agree with Mark S

I would recommend 90 minutes early. Counter closes 30 minutes before departure. Multiple flights going out at that time of day and TSA could be backed up a bit...

45 minutes early