Originally Posted by
canopus27
And it's not just upgrades - even things like the "changeable" of the ticket are nebulous, because you can't change a cheap fare latitude ticket (for low/no cost) unless the same cheap fare remains available - so last minute date changes are not really viable.
Didn't you always have ot pay any fare difference? It was just that up until recently the fare difference was typically zero or minimal unless you booked in B and all that was left was Y?