Originally Posted by rakers

Thanks for the links; I've copied some of the info below. So given that my fare class is HN, does that mean I can pick a letter? Or do I have to go with the most expensive option (N)? I'm guessing the latter.

Upgrade amounts shown are one way unless otherwise noted.

Award Miles Fare Type Special Conditions
20,000 J, C, D
20,000 Z, P $550 co-pay required
15,000 Y
20,000 B
20,000 M, E, U $300 co-pay required
20,000 H, Q $425 co-pay required
20,000 V $475 co-pay required
20,000 W, S, T, K, L, G, N $550 co-pay required