I declined an OLCI check-in from ZRH-DXB for 950 GBP/1100 EUR. Slightly annoyed at myself since this was more than the price differential between J and F when I booked the ticket and I was wavering on whether to take F over J at that point. The difference was approx 500 GBP / 575 EUR and then on MMB immediately after booking the price to upgrade was approx 1500 GBP / 1750 EUR (bonkers - this was almost as much as a whole F ticket was selling for on Swiss.com for the same flight!)

Anyway, question is what is the likelihood that airport upgrade will be cheaper? Also, how do I go about it? I am flying into ZRH on Edelweiss on a connecting flight, I presume that I will not get an upgrade offer at the outstation?