Originally Posted by
nyoka
I'm getting different answers from customer service. Is it true you can book a cash upgrade on the website (don't even see this option) and miles upgrade only when check in opens? Booked in economy and want to go up to premium economy or business, at least for first leg.
You can upfare for the difference in fare in advance by going through a flight change (the price will be the difference between what you paid and what a new W/J booking would be). Otherwise no upgrades for sale until check-in.