Airbending
All airbenders of any skill level are capable of moving currents of air in close proximity to their bodies. Unlike other bending cultures, the intense ascetic lifestyle of the Air Nomads means that each and every child born to them learns to bend. At 1st level, Airbenders receive the Airbending class feature and may choose 1 heroic tier Airbending Trick. You may take additional tricks at 3rd, 6th and at 9th level.

Airbending           Airbender Class Feature
Your studies of the wind and air around you allow you to move it and compress it into a nearly solid state.
At-Will * Elemental
Minor Action      Ranged 2
Effect: You create a gust of wind. The force of this technique is sufficient to push  objects weighing less than a pound, clear a square of gas or smoke or snuff out a candle. You may also use it to dry an object of up to medium size.

Breath Deep            Heroic Airbending Trick
You can use your airbending to supplement your lungs, allowing you to hold your breath for longer.
At-Will * Elemental
Minor Action      Personal
Effect: You gain a +3 bonus to the next endurance check made to hold your breath made before the end of your next turn.

Light as Air             Heroic Airbending Trick
Using upward currents of air, you make an object seem light than it is.
At-Will * Elemental
Minor Action      Range 2
Effect: One object within range is considered to 25 lbs. lighter until the end of your next turn.

Wind at Your Heels  Heroic Airbending Trick
The wind pushes at the backs of you and your allies, helping you walk long distances.
Benefit:  When calculating overland speed, the party uses your speed, rather than the slowest character’s.

Suck It Up                 Heroic Airbending Trick
You have learned to pull the air from a nearby area and create a controlled vacuum.
At-Will * Elemental
Minor Action   Range 2
Effect: You create a vacuum which pulls air into it. This vacuum isn’t strong enough to lift objects or completely remove air from any area, but it can be used to starve a fire or create suction sufficient to move a gallon of water through a closed system. 

These are some basic tricks I thought of. It's a simple system that is designed to be homebrew compatible. Basically, you can creat gusts of wind, they aren't very strong, but you can eventually take tricks that let them be powerful in certain respects. My goal is to have a handful of tricks ranging from niche to generally powerful, none of which have particularly complicated abilities.

Wind at Your Heels is cleary as powerful as a feat... so... I think that might just be a feat. What do people think? What are some other utility things an Airbender ought to be able to do? 

Airbending           Airbender Class Feature
Your studies of the wind and air around you allow you to move it and compress it into a nearly solid state.
At-Will * Elemental
Minor Action      Ranged 2
Effect: You take control of the air and wind around you, performing any number of techniques as per your personal style of airbending. This ability is very open ended and you should feel encouraged to think of novel ways of utilizing your bending abilities outside of combat. Regardless of how you use it, this ability cannot be used to inflict damage or move an unwilling creature.

The effects of this ability can be generally divided into two categories:
Force: You may use air to create up to 5 pounds of force. The maximum possible force increases to 15 pounds at 11^th and 35 pounds at 21^st level. 
Summoning: You may summon air or wind into an area 1 within range. This increases to area 3 at 11^th level and area 5 at 21^st level.
The range at which you can use this ablity is increased to 4 at 11^th level and 6 at 21^st level.