Originally Posted by
sometalkofme
Are there sub-buckets within a fare code? I had this one instance where I was trying to UuA from CW (Fare code I) to F and was told that my fare rules disallowed upgrading using Avios. Here I thought all CW fares paid with cash, even discounted ones, were eligible for UuA.
I class would normally allow UuA, but there are certain further conditions needed for UuA, so for example if it was a private fare, or not plated by BA (125 ticket) or there were other sectors non on BA on the ticket this may well inhibit UuA.