Use any toy airplanes you already own as table toppers, or group them together to form a centerpiece. If you have a toy airport, you can use that as well.
Make large paper airplanes, and hang them from the ceiling. To make clouds tie together eight white balloons and hanging them from the ceiling as well.
Make a baggage claim sign for the closet or gift table.
Make airport signs that say "Passengers Only", "This Way to Baggage Claim", "Customs", and "Crew Only".
Make a banner that says "Welcome to (your child's name) Airport", and hang it on the front door.
Hold silverware together with paper luggage tags.
Make airplane shaped place cards for the table.
Fill baskets with mini bags of treats like peanuts, pretzels and trail mix.
Make airplane shaped sandwiches by using an airplane shaped cookie cutter to cut them out.
Make edible airplanes. Cut a banana in half lengthwise. Place one half; cut side up, on a plate. Spread with peanut butter. Place a whole graham cracker in place for each wing, and use a quarter rectangle for the horizontal part of the tail. Put the other banana half on top. Cut a slit at the tail end of the top half, and put a rudder piece in place to finish the tail. Stick on raisin windows with little dollops of peanut butter.
To make an airplane runway cake, bake a 9 x 13 cake. Frost all but the very top corner of the cake with white frosting. Tint the remaining frosting sky blue, and use it to frost the top corner. Make a runway across the cake using crushed chocolate cookies, or chocolate sprinkles. Use green sugar on either side to make the grass. Put a toy airplane on the runway. Use whipped cream to make clouds on the sky blue portion of the cake. Place another toy airplane on the clouds.
Instead of a cake, you can make cupcakes, and frost them with icing you've tinted sky blue. Put a new, clean toy airplane on each.