it's 2 am...

I'm a big fan. In the wee hours of the morning the airport is next to empty, customs and immigration agents aren't interested in much else than getting you through the line so they can get back to dozing.
Get a seat on left side and you'll be treated to one of the most spectacular sunrises you'll ever see. And if you do carry-on, get a seat near the front, you are out of the airport before most people are off the plane!

I've also noticed that--in my unprofessional assessment--Mexican pilots tend to wring a bit more performance from their aircraft than their USA counterparts.
Every Volaris flight I've been on has arrived early...even the one that left 20 minutes late.