Originally Posted by
fakecd
Sounds like an oxymoron. Wasn't ID90 are basically stand-by only (or get booted off first as chrisrep mentioned)? If so, how can stand-by only ticket co-exist with op-up, which requires overbooking thus no seats available??
Or perhaps they refer to type of ticket that can be preconfirmed?
I am an airline employee so please let me take a stab at this.
You buy id90 Y (90% off Y fare + taxes..not always cheap) but there is no Y left. They will seat you in available J or F. So Y may be not overbooked , just full and the ID90 travel will get whatever seat remains.