Northwest WorldPerks members can earn up to 15,000 bonus miles on NWA/KLM nonstop flights between Calgary and Amsterdam until July 15, 2009. To earn the bonus miles, you must be a WorldPerks member residing in the U.S. or Canada. Register for the promotion prior to purchasing your ticket and no later than June 30, 2009. Flights in the following booking classes are eligible to earn bonus miles: World Business Class J/C — 15,000 bonus miles; coach Z,Y,S,B,M — 10,000 bonus miles; coach H,Q,V,L,T,K — 5,000 bonus miles. Qualifying flights include Northwest/KLM nonstop flights between Calgary and Amsterdam only. One-way flights will qualify for half the bonus miles and the bonuses will be earned in addition to the number of miles you would normally earn for the flight. The reference code is GNWP BONUSYYCAMS.