I've only missed one flight and it was completly embarassing and all my fault. My younger brother was staying with me in Phoenix and we had decided to fly to SNA early to catch an Angels came. Our flight was to leave at 7:30 AM and I dutifully set my alarm for 6 AM. Sadly, because of being tired from a long week at work I didn't wake up until 7:35 AM. I even said "well we're on USAirways maybe the flight got delayed!" Of course, it left early so we had to head to the airport and get put on standby for the next flight. Luckily, we only missed the Top of the 1st inning.