• The freedom of PerkPassSM Awards:
  PerkPass Awards allow you to bypass restrictions associated with PerkSaverSM Awards. Although the PerkPass option requires a higher number of miles, you will find greater seat availability and will not be subject to the Saturday night stay restriction. PerkPass Awards are available on Northwest, KLM and Continental flights.
• The savings of PerkSaver Awards:
  PerkSaver Awards offer you a savings on award travel prices. These awards let you travel for the lowest number of miles but are limited and subject to availability and restrictions. As a result, you may not be able to use the PerkSaver option on some flights. Travel to prime destinations during peak periods may require the PerkPass option to secure seats.
• Mix and match award level
  The SkyMiles flexible award travel program lets you maximize the use of your SkyMiles mileage. You can choose a different travel option for each direction of travel. For example, if there are no PerkSaver award seats available on one of your travel dates, you can use your miles at the PerkPass level on this date and save miles by using the PerkSaver level in the other direction. The same applies for the class of service in which you travel. Our flexible system will average the two mileage levels you use for your outbound and return trip.
• Upgrade to BusinessElite^® or First Class using miles: Purchase a qualifying Coach fare, and redeem miles for one-way or roundtrip upgrades to BusinessElite or First Class. Mileage may be redeemed for one-class upgrades from full fares or select fares, when traveling on Northwest, KLM and Continental flights.
• For further details, see the SkyMiles Award Chart.

*For travel in BusinessElite, PerkPass must be booked in "C" class rather than "J" class. For travel in Domestic First Class, PerkPass is booked in "P" class rather than "F" class.