Originally Posted by
crowbait
Interesting. When I got the "Y" bonus, when flying to JAX, I did nothing special...and my fare was no higher than the standard "U" booking class. I'm not even sure why I got the "Y" booking class the first time. But, the fare was no higher, that I recall....if it was...just a little.
Were you rebooked on an earlier/later flight? That usually explains it.