In order to book an upgradable fare on United you have to buy a ticket in fare class W or higher. Here are the fare classes above W.
V
Q
H
U
E
M
B
Y
Only airlines could convolute something so simple as the ordering of the alphabet.
Related
I’m an avid hiker, camper, and general outdoorsman. I think
This week Square introduced preorder and pick-up services. On the
