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
Several changes are underfoot which could be shifting the direction
Much has been written about the “death” of Microsoft’s Kin
With three boys playing baseball, I spend every evening on