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The film opens with the following written acknowledgment: "The producers gratefully acknowledge the cooperation of the Royal Air Force without which the film could not have been made." The opening and closing cast credits differ in order. The opening credits read: "and introducing Sean Kelly, January Brooks." Although the film's copyright lists its running time as 102 minutes, the Daily Variety review for the London opening lists it as 95 minutes and the Hollywood Variety review lists it as 83 minutes. The viewed print ran 95 minutes.
Although a Hollywood Reporter production chart places Duncan Lamont in the cast, his appearance in the released film has not been confirmed. A September 1956 Los Angeles Times news item notes that Alan Ladd was initially sought to star. The Variety review states that the film's 2d unit filmed the air scenes under the direction of Max Varnel, Anthony Squire and Bernard Mainwaring. An April 1957 Hollywood Reporter news item notes that eighteen days of location shooting were filmed at the Cranwell RAF Training Base in Lincolnshire, England. Interiors were filmed at the Elstree Studio in London. High Flight marked the American screen debut of January Brooks.