Making an airport, complete with hangars and a control tower.
Airplane coloring pages: here, here, and here.
A lesson in how airplanes fly and making the shape of airplane wings out of clay.
Dot-to-dot and maze. Rohan loved the maze and kept asking for more.
Falling paper experiment. A ball of paper falls faster than a flat piece that catches more air.
But a parachute slows the ball of paper down.
Paper wing experiment.
Airplane rhymes and fingerplay.
Playing with paper airplanes.
And a paper helicopter.
Windsocks made of toilet paper tubes and streamers.
Playing mechanic and pilot.
I used google maps to show the kids how long it takes to get to different cities by walking, driving or flying.
And we read plenty of books on airplanes. I especially liked The Little Airplane by Lois Lenski. It is geared toward young children but the text isn't babyfied. It's full of information in a story format and would be good for preschool on up through elementary.