Smiles is the frequent flyer program for the Brazilian GOL and Varig airlines. Smiles miles can be used to travel to destinations of these two airlines as well as to destinations of their partner airlines:

Air France
American Airlines
Delta Air Lines

Required miles for award flights are calculated by zones.
The rates in the calculator are the standard Smiles rates; for GOL and Varig routes there is an any day rate, which is double the standard rate.

Max Your Milez

Reward Seat Availability
Air Transport World (ATW) has published a report on global reward seat availability. The report is based on over 6,700 bookings made with 24 frequent flyer programs during March and April 2011 for travel in June-October 2011. The report can be purchased here:

The top five programs for seat availability were:

  1. GOL Smiles
  2. Southwest Rapid Rewards
  3. air berlin topbonus
  4. Virgin Australia Velocity rewards
  5. Singapore Airlines KrisFlyer