BirthdayExpress Airplane Adventure Party 18" Foil Balloon Have a high flying party with this Airplane Adventure detail! Includes (1) Airplane Adventure 18" Foil Balloon. Includes (1) Airplane Adventure 18" Foil Balloon. Add matching tableware, favors, accessories, or a party kit bundle to complete your Airplane Adventure birthday party! Great for childrens birthday parties, kids school parties, a pizza party, or a theme party.