Pfaelzer

I am non-elite on CO, but I still have some 31k miles hanging around on my account.

I have to fly from South America (GRU/EZE) to Guatemala on Easter Sunday, and all flights seem to be pretty full. CO from GRU would be a possibility, on Expertflyer 92 GRU-IAH looks like this:

J9 D9 Z9 R5 Y9 H9 K9 M9 N9 B0 O9 V0 U9 Q0 I9 S0 W9 T0 X9 L0

I could purchase H Class. Can anyone give me a hint if I will be able (as non-elite) to score an upgrade on this flight and how much will it cost. That means, is H considered full fare or just any economy class?

Thanks a lot.