And the award for most customer unfriendly airlines goes to American.
Here is one of their policy.. Even if the flight is half empty to advance you on an earlier flight costs $75/pp.
Another one.. They can change your assigned seating by their will. I had to create a scene just to get back the same seat that was printed on my ticket.
Everything has a standard answer.. "It is our company policy."
I wish I could choose to never fly AA. Ever.. But every once in awhile there are no other alternatives.. Cartel capitalism.