Last year I made an 8:50am flight out of SEA after getting off the Bliss. We were in a cab by I think 7:15am, we have TSA Precheck and we were still about 30 minutes early to our gate. As a previous poster said, experienced travelers do not plan for worst case scenario. I'm the type of person who gets to the airport 30 minutes early, I don't check bags, and in my last 100 flights I have missed a flight one time. 99 other times i enjoyed extra time in my day.