Able to fly through the air (as a bird)(adjective)
WordNet. Princeton University. 2010.
Use "free-flying" in a sentence
"Migdalia Figueroa of Hoboken; and Shiva Maraj of Belleville, all employees of PNC Bank, held a line as the PNC American Flag balloon, the world's largest free-flying American flag, was inflated in Hoboken, N.J., Tuesday in celebration of Flag Day."
"The world's largest free-flying American flag, the world's largest matzo, and more from across Greater New York."
"And our practice on the Lunar Module Simulator and in the free-flying Lunar Landing Training Vehicle had given us high confidence in our piloting ability."