Has anyone else had issues using these? I have regularly changed European Semi Flex flights on the day, normally on the return leg, and almost without exception, the ticket staff at outstations have no clue how to implement a change and it generally takes around 30 mins and a call to the Gold Guest List team (to which I am fortunate to have access) to get it done. Not ideal if you're hurrying to try to catch an earlier flight.

I have also previously been told by BA that you can change a return flight to come back to a different London airport and I have done that more than once from AMS going say, to LHR instead of LGW or LCY with no additional charge. Today at ARN I tried to change from my LCY flight to a LHR one going earlier with plenty of space. But I was told I could not return to another airport and would have to pay well over £100 to fly an hour earlier. So I declined, somewhat peeved that I had previously been misinformed and that I had paid for something that actually did not exist in the form it had been explained to me.

But that got me thinking: put the case you want to go to Nice. You go on BA.com and select the one flight a day to and from LCY. The next page offers you the option to upgrade to semi flex. On the dates I checked, that was an additional £172. For that you get two enhancements, listed in bold as: "Change your flight for free on the day of travel" & "choose your seat free from 48hrs before departure" (instead of 24hrs). In the small print it does say "Free changes on the day of departure provided changes are for same date/cabin/route/airport"

So BA is offering to sell you the opportunity to select your seat early by a day for £172. The other benefit of flexibility does not apply, because there is no other valid flight that day. And the seat change is worthless to Gold / Silver / Prem members. So I reckon at £172 for close to nothing, this has to be the highest cost (relative to benefit) add on that BA offers, and some might say that offering such a product in this way is at best, disingenuous.

Thoughts?