Originally Posted by
synthkeys
AFAIK, it is not possible to upgrade AA/CX codeshare tickets. I met a guy a few months ago while boarding CX841. It was his first time flying CX and was frequent AA traveler, Ex-Plat, with tons of miles. He said he tried every which way with the staff at the lounge to try and upgrade his PEY to J but no dice. I told him he should have bought an R class ticket from CX instead but still need Asia Miles to pay for the upgrade.
AMEX travel often has very good prices on AA/CX codeshare PEY tickets, many of my colleagues have been booking them lately after I stumbled on it last year. I don't remember what the fare class of the tickets (not E,R or W) but definitely can't upgrade with miles, AA or AM. A few of them have gotten op-up with that ticket though.
Interesting about the AMEX travel - is that for US cardholders only?