This is a very disorganized airport. If you are flying domestic overnight from terminal 1, beware. After 9:30 pm they close the security lines for gates C directing everyone to the further gate D
When choosing your travel outfit, less is more. Avoid wearing clothing, jewelry or other accessories that contain metal when traveling to cut your time barefoot in the security line.
If you're flying United, it doesn't matter how early your flight is. Don't bother getting to the airport before 4am. You will watch the line grow with not a single united rep in sight.
It's a *long* walk from ticketing to most gates, so leave plenty of time to make your flight. Rental car drop-off to Terminal 1 requires *two* shuttle rides.
use the digital boarding pass on your smart phone and you can pretty much skip the security line and use a special digital pass line that is very short.