Hello,
Welcome to FT!
You can not use AA-miles for upgrades on LX-planes, but you can get an upgrade ORD-ZRH against cash on board, which costs about 1500CHF (C to F, should be the same amount for Y to C). Ask the maître de cabine for that.
I heard, but never experienced myself, that they offer sometimes cheaper upgrades at the gate, when C is not fully booked. So it's surely worth for asking.
Enjoy your flight!
Patrick
Last edited by rorschi; Dec 23, 2004 at 2:13 pm