From Fold'NFly:
Paper Airplane Designs
Hard
     7
          acrobatic 
 
This is a very fun plane to fly.
If you throw it the right way, it will spin into the air.
    Hard
     14
          distance
    
 
The Bird is a fast flying plane because if its short wings.
Throw it hard to see how fast it can go.
Expert
     17
          distance, duration
  
This plane will glide through the air because of its lifted tail.
All it needs is a slight push and you’ll see it go.
And 33 more, four levels of difficulty