Northwest Airlines may not be around much longer, but they’re going out with a bang if you’re hoping to use your Worldperks miles. Northwest (unlike a number of its partners) previously had allowed you to use Worldperks miles to book a trip with little advance purchase without hitting you with a fee. No longer. Tickets booked 8-20 days prior to departure get a $75 fee, 4-7 days get a $100 fee, and 3 days or fewer get a $150 fee.
As View from the Wing points out, Northwest has added some positive features (cheap reward tickets no longer require a Saturday stay), but always sad to see a positive feature disappear.