Joseph Crehan

Jim Horn

Joe King

Mr. Pierson

Addison Richards

Mr. B.C. Hill

Ruth Robinson

Mother Brunn

Henry B. Walthall

Dad Brunn

Carlyle Moore Jr.

Radio Operator on Clipper

Lyle Moraine

Co-Pilot on Clipper

Dennis Moore

Engineer on Clipper

Wayne Morris

Navigator on Clipper

Alexander Cross

Bill Andrews

William Wright

Pilot

Kenneth Harlan

Department of Commerce Inspector

Anne Nagel

Secretary

Marjorie Weaver

Secretary

Milburn Stone

Radio Operator

Owen King

Radio Operator

Irving Bacon

Charlie - the Janitor (uncredited)

George Beranger

Waiter (uncredited)

John Butler

Second Commerce Inspector (uncredited)

Glen Cavender

Pan American Union Waiter (uncredited)

Joe Cunningham

Jack - a Weatherman (uncredited)

Hal K. Dawson

Airplane Designer (uncredited)

Ralph Dunn

Plane Announcer at Miami Airport (uncredited)

Bill Elliott

Pilot (uncredited)

Frank Faylen

Weatherman (uncredited)

Jonathan Hale

State Department Official (uncredited)

Jack Hatfield

Reporter (uncredited)

Milton Kibbee

Mechanic (uncredited)

Shirley Lloyd

Eadie - Horn's Secretary (uncredited)

John Marston

Airplane Designer (uncredited)

Walter Miller

Instructor (uncredited)

Thomas Pogue

Key West Speaker (uncredited)

Georges Renavent

Pan American Union Speaker (uncredited)

John Graham Spacey

Australian Broadcaster (uncredited)

Edwin Stanley

Airplane Designer (uncredited)

Houseley Stevenson

Doctor (uncredited)

Harland Tucker

Airplane Designer (uncredited)

Guy Usher

State Department Official (uncredited)

Emmett Vogan

Airplane Designer (uncredited)

Pierre Watkin

Secretary of State (uncredited)