Originally Posted by
myperks
United will certainly let you select PE and E, and even C class in the same search with fare class designations.
This is new behavior, or maybe there's a limit on how many fare classes you can select at once. I'd tried it before, and I tried it when I wrote this message. In both cases, I got an error whenever there were fare classes from multiple products listed in the advanced search. Now, I do not. ^