Charlton Heston
Capt. Henry 'Hank' O'Hara
Yvette Mimieux
Angela Thacher
James Brolin
Jerome K. Weber
Claude Akins
Sgt. Ben Puzo
Jeanne Crain
Mrs. Clara Shaw
Susan Dey
Elly Brewster
Rosey Grier
Gary Brown
Mariette Hartley
Harriet Stevens
Walter Pidgeon
Sen. Arne Lindner
Ken Swofford
John Bimonte
Leslie Uggams
Lovejoy Wells
Ross Elliott
Harold Shaw
Nicholas Hammond
Peter Lindner
Mike Henry
Sam Allen
Jayson Kane
William Reading
Leoda Richards
Passenger
Lorna Thayer
Weber's mother
Maureen Connell
Mrs. O'Hara
John Hillerman
Air flight controller
Jenifer Shaw
Cosmetic Salesgirl
Wesley Lau
Stanley Morris