When you hear that somebody is flying out of the Tijuana's international airport you usually think one of two things: 1. "Dude, are you crazy? TJ's insanely dangerous, if the cartel doesn't cut your head off than you'll probably crash on take off 'cause those dudes don't know how to fly" or 2. "Oh, so you know about Volaris, eh? Nice work."
Response 2 shows you're a savvy traveler. Response 1 indicates you don't get away from surfing South Garbage very much, do you? Flying out of TJ's airport is a piece of cake, as long as you approach the process with the right frame of mind and a couple of strategies to help you through it all. Mainly, be flexible- be sure to smile a lot and most importantly get there early. Also, you'll find that the Mexican government is doing its best to attract foreign travel so there will be helpers around to assist you in the sometimes chaotic airport. Do what I do and when you're confused, just look kind of spacey and lost; before you know it someone will come along to help you out.