A little early to book this (I plan on going, too), as award tickets can generally be booked only 330 days out. I don't think anyone does LAX-ATH nonstop, so you're going to have to connect somewhere. You'll have all sorts of options with AA/UA (I don't know anything about the AMEX program). AA flies to Madrid from the U.S., or you could do something with a BA connection from LHR or another AA gateway. AA also has Iberia as a partner to get you into Spain. UA doesn't fly to Spain, but a UA/LH ticket could get you there. SpanAir is also a UA partner and could get you into Spain from a UA gateway in Europe.
[This message has been edited by tom911 (edited 07-10-2003).]