I missed my flight to seattle on saturday, due to oversleeping. I called CO about 20 mins before departure and was told, the two rule. That if I check-in within two hours then I can fly standby for a later flight. As just about all the other flights were wide open(I checked ITN), not having a confirmed seat was not really a big deal.

I get to airport about an hour and half after my original flight had left. My reservation, including my return had been cancelled. They put me on the next non-stop and reticketed me for my return. This took about 15 mins at the ticket counter. I had already confirmed my upgrade to FC for the return, so I was worried about losing that. The ticket agent got me FC for the return.

At the president's club, I checked the schedule on-line and found a connection in houston would get to seattle about an hour ahead of the afternoon non-stop. It took about 15 mins for them to figure out how to change my flight. It seems CO's computer system is a little picky about E-ticket's when the number of segments change(as I was going from 1 flight segment to 2).

I was annoyed about the reservation being cancelled. I was told by the one-pass folks that that wouldn't happen. They were wrong.

I wish I could have done the change over the phone. It would have saved me several hours.
Perhaps the one-pass srvice center could have a little more descretion(especially for platinums and golds).
They had dozens of empty seats on the later flights, too bad they couldn't reticket me over the phone.