So My united flight is scheduled to depart at 6AM for EWR. I was planing on getting to DTW at around 4AM to clear security since allot of flights start departing around 5AM it could be a mad house and united likes to board earlier then stated on your BP so would the airport be open and what time does the security checkpoint open? do they open that early or do they never shut down. First time flying this early in the morning. Checked DTWs website but didn't really get no where.