A paper airplane that is easy to make and flies really good. First instructable, so it might not be that great.
you need: a single piece of paper.
Step 1: Step One: Start Folding
First, turn the paper sideways to where it's longer left to right. Then take the top right & top left corners and fold to the middle.
Step 2: Step 2: More Folding.
Note: I turned the plane upside down, because it is easier to see the folds.
After you fold in the first step, fold the tip down down to about the middle of the paper. Next, make sure you fold it like in the pictures! Fold the top left & top right corners again, but leave some space in between where the two folds meet. See picture for example.
Step 3: Even More Folding!!
Now, fold the paper up, but inside out to where the folds are on the outside.
Fold the tips of the wings down, see pic.
and last but not least, fold both wings down to their sides to where the base of the plane (where you hold it to throw) is in between a half inch and an inch.
then straighten out, and you're done!