Originally Posted by andrewjsl
Thanks for the info. The reason I'm asking is we have a family situation and my insurance is paying for an economy ticket, so I was thinking if I get a full fare economy, I may be eligible for an upgrade. So if I fly a US-based airline like United, I might be eligiible for an upgrade?
Ask your travel agent to give you two invoices: one for full fare Y (to be handed in to the insurance) and a second invoice for the difference between Y and J (and pay this one yourself).
I have often done this when customers only want to pay for Y travel but I fancy J... The difference between full fare Y and discounted J is often negligable (sometimes J is even cheaper..)