As I was driving past the (EWR) Airport this evening and called United only to find out that my 72 hour upgrade (UAL-PREMEX) is still on Waitlist b/c Fist class is full I couldn't help wondering... What percentage of people actually dont show up for a flight? I know this is a fairly general question, and a full Fare First Class is probabally more likely to miss a flight as they are likely on business and the ticket is refundable. Anyway, are there any statistics out there? Break down by class? I figure the whole concept of overbooking airline flights is based on this, just wondering what you thought. Thanks

[This message has been edited by milesandpoints (edited 05-30-2000).]