I would agree with slippahs.
The biggest thing (after the traffic on a weekday) would be the time through check-in/security, plus the ag machine/check-in/TSA baggage drop routine that can confuse first-timers.
If you're flying HA, then being able to use the priority security line is enormously helpful, and if another airline being able to use the Gold lane in the main terminal, per slippahs, is also helpful.