The worst part about air travel is the dreaded cancelled or delayed flight.  Even worse?  Oversleeping or hitting traffic on the way to the airport causing you to miss your flight.  If you know you’re going to miss your flight, the most important thing to do is contact the airline immediately.  The agent will be able to help you reschedule your flight or find an alternative way to get you to your final destination.  This can also save you money in the long run because if you just don’t show up for your flight, you’ll lose what you paid for your entire ticket.