The Ballonatic(1923) by Buster Keaton

A young man (Keaton) has a series of encounters in an amusement area, much like Coney Island, until happening upon a group of men preparing a hot air balloon for launch. The young man assists the group by climbing atop the balloon to affix a pennant, when the balloon mistakenly takes flight with no one aboard but the young man. The young man finally downs the balloon in a wilderness area, where he encounters a young outdoorswoman and proceeds to have a series of misadventures.