In order to become Platinum in Flying Blue (AF/KL) if you reside in France you need 90,000 miles and if you reside outside France you need 70,000 miles. In the case of LAN you can become Emerald (Comodoro) with 90,000KM or about 55,000 miles (provided you fly 6 biz class segments with LA or AA). This means that it is actually easier to become Emerald in OW than Platinum in Flying Blue's AF/KL program!

Rgs,