959 thanks for your reply.
I know how long it is - I do this hop quite a bit (actually it is home for me although I live Stateside now).
I believe that C is booked to 80+ which even my UA insiders thought was odd since F was also booked solid so there is very little space to play with op-ups from C to F.
I too would be very interested in a FT UA insider's feedback on this one.
Lurker