Hi All,

Apologies if this has been answered, I tried searching. I made a mistake a booked a flight in Premium Economy from LAX-HEL-LHR, the LAX-HEL operated by Finnair but with a BA flight number. As a result they are saying I can't upgrade to Business in advance. Clarifying with the experts, is that assumption correct? If so, is there any other workarounds or does Finnair offer upgrades for $$$ at check-in if available.

Thanks!