Originally Posted by
Smirnoff
However this can cause confusion at check-in. I OLCIed and PYOBPed using the new booking with the 1F seat. The DME procedure for dealing with PYOBPs is not to scan them or anything, but for the gate agent to scribble the seat number on the back of her hand.
She could have an awful lot of numbers on the back of her hand by the time the flight goes!
As for the original query, on a fully flexible ticket, you can do pretty much anything you want, but most other tickets won't let you travel if you nosho.