Daniel Boria pulled off the potentially deadly stunt by attaching about 110 helium balloons to a lawn chair.
"A green plastic lawn chair that we purchased for about $10 at the local Walmart, I believe," said his friend, Conner Shauf.
Boria was detained Sunday night and still in custody as of early Monday morning, say Shauf.
The lawn chair pilot, who says he's a skydiver, intended to parachute himself into the Calgary Stampede.
But the weather didn't co-operate and he missed the grounds, landing uninjured a few kilometres away in an industrial field.
However, the chair and the balloons are still somewhere up in the air.
"We're in the midst of tracking that down," said Shauf, who adds that Boria had practised the stunt the day before.