Using Avios to upgrade from PE to CW
Hi,
Mrs ML and I are planning a visit to Moscow this Summer (not sure when). We were intending to book PE then use Avios to upgrade to CW. To cut a long story short for us the BA0235 and 0234 are the most convenient flights for us. Only thing is PE is not offered on neither of these flights.
So I was thinking, If I were to book the PE seats on the BA0233 and 0232, would I be able to then get an upgrade using Avios to CW on the BA0235 and 0234?
I'm guessing if this is possible, then I would have to pay some kind of admin fee for changing the flights!!
Any wisdom offered greatly appreciated.
Thanks
ML