Originally Posted by
jjmiller69
Only if there is a seat open in the same class that yours was purchased in. So unless you're holding a B or Y class ticket it's very hard.
I'd say that's an exaggeration. Unless a flight is very full, I frequently see bucket inventory below Y/B for flights on the day before and day of travel. There just has to inventory there, it doesn't actually have to be available for purchase.