Northwest WorldPerks members can redeem miles for e-certificates that can be applied toward the cost of NWA WorldVacations travel packages. Members can redeem 7,500 miles for a $75 e-certificate, 15,000 miles for a $150 e-certificate and 25,000 miles for a $250 e-certificate. E-certificates can be used on vacation packages purchased by June 23, 2010 for travel through June 30, 2010 that include airfare, hotel and rental car; air and hotel; air and car rental or hotel only for any WorldVacations destination. WorldPerks members must reside in the U.S. or Canada to be eligible to redeem miles for e-certificates and restrictions apply. E-certificates are not valid with ski packages, other discounts or special fares and for groups of 20 or more. Only one e-certificate can be used per booking. Move fast on these deals, with the Delta merger, we cannot say that this award option will continue.