I've only done domestic flights recently but of all three trips I've done this year have been problem free. I always show up 2 hours before my flight (well, I schedule the ride service 2:30 before my flight as it's about 20 minutes away).

I'm always flying for vacation and tend to end up with early morning flights as a result, but we've always had time to eat a sit-down breakfast and have a little time to get any snacks or whatever for our flights.