Originally Posted by USFlyerUS

I've had a 100 percent success rate with AS certs. Routes include DCA-SEA, SEA-DCA, SEA-LAX, LAX-SEA, SEA-SNA and SNA-SEA. Now, when I fly carriers where I do not have elite status, I tend to book close to the last minute since there's no benefit to booking earlier. So, many of these tickets were full Y fares where I can upgrade in advance using the certs.

By the way, if any Platinums out there have any spare AS certs (they are transferable), I could use a few more as I am almost out.