William Gargan
— 'Trip' Hammer
Edmund Lowe
— Captain Rockcliffe 'Lucky Rocky' Ames
Peggy Moran
— Kitty Randall
Frank Albertson
— Bob Ames
Frankie Thomas
— Newton R. Adams / Ames
Riley Hill
— Cadet Barnes
Charles Williams
— Mr. Prim / Primmie, Bookkeeper
John Maxwell
— 'Pinkie' Taylor, FAA inspector
George Melford
— Train Conductor
Arch Hendricks
— Army Colonel
Louise Lorimer
— Mary Adams / Ames