Originally Posted by
Flying Machine
Actually it's not basic economy it's an LGT fare which books into K, L and T (read the nine page link that's above the first post of this thread)
The point is, there are LGT and non-LGT fares that book into K, L, and T (and S, and W in some cases). It sounds like you have the non-LGT version. Also, I’m confused about what kind of upgrade instrument you’re using; cash + miles?