Antoinette Concello was a member of the famous "Flying Concello" aerial troupe, a family of flying trapeze artists. In the 20th Century multi-ring circus, the flying trapeze was the main attraction in the center ring of the "Big Top." The Flying Concellos were the premier troupe of aerialists in the 1920s, and Antoinette became known as the "greatest woman flyer of all time" because she was the only woman to complete the fabled "triple" (see Carol Reed's 1956 film "Trapeze" for background about this legendary stunt). A triple means that the aerialist completes three full somersaults while "flying" through the air after leaving their bar and being caught by a "catcher" hanging upside down on the opposite bar. It is a dangerous stunt.

Antoinette appeared with the troupe as one of the acts in Cecil B. DeMille's 1952 Best Picture Oscar-winning movie "The Greatest Show on Earth," which uses Ringling Brothers, Barnum & Baily Circus as a backdrop. The red-coated Ringling ringmaster Fred Brandna would introduce her act by announcing that Antionette was the first and only woman to achieve the triple, and added that she did it with "incomparable grace". The legendary flyer did not disappoint her audience, performing the fabled triple at every performance.

Antoinette Concello was inducted into the Circus Hall of Fame in 1963.