Charlton Heston as Alan Murdock

Karen Black as Nancy Pryor

George Kennedy as Joe Patroni

Efrem Zimbalist Jr. as Captain Stacy

Susan Clark as Helen Patroni

Helen Reddy as Sister Ruth

Linda Blair as Janice Abbott

Dana Andrews as Scott Freeman

Roy Thinnes as Urias

Sid Caesar as Barney

Myrna Loy as Mrs. Devaney

Ed Nelson as Major John Alexander

Nancy Olson as Mrs. Abbott

Larry Storch as Glenn Purcell

Martha Scott as Sister Beatrice

Jerry Stiller as Sam

Norman Fell as Bill

Conrad Janis as Arnie

Beverly Garland as Mrs. Scott Freeman

Linda Harrison as Winnie

Guy Stockwell as Colonel Moss

Erik Estrada as Julio

Kip Niven as Lt. Thatcher

Charles White as Fat Man

Brian Morrison as Joseph Patroni, Jr.

Amy Farrell as Amy

Irene Tsu as Carol

Ken Sansom as Gary

Alan Fudge as Danton

Christopher Norris as Bette

Austin Stoker as Air Force Sergeant

John Lupton as Oringer

Gene Dynarski as 1st. Friend

Aldine King as Aldine

Sharon Gless as Sharon

Laurette Spang as Arlene

Gloria Swanson as Gloria Swanson

Mary Margaret Amato as Diane (uncredited)

Selma Archerd as Passenger (uncredited)

David Baker as Rev. Bob Herron (uncredited)

Barbara Baldavin as Passenger (uncredited)

Rochelle Balin as Passenger (uncredited)

Ray Ballard as Passenger (uncredited)

Billy Beck as Funeral Director (uncredited)

Marjorie Bennett as 50th Anniversary Celebrant (uncredited)

Carol Brooks as Passenger (uncredited)

David Carlile as Fred Fuller (uncredited)

Jolivett Cato as Passenger (uncredited)

Diana Chesney as Diana (uncredited)

Ed Connelly as Pilot (uncredited)

Edwin Cook as Rock Singer (uncredited)

Natalie Core as Fern (uncredited)

Joan Crosby as Passenger (uncredited)

Wade Crosby as Andy Birdson (uncredited)

Joyce Cunning as Needlepoint Woman Passenger (uncredited)

Tom Curtis as Passenger (uncredited)

Maria Diane as Denise (uncredited)

Jim Drum as Passenger (uncredited)

Lou Fant as Needlepoint Woman's Husband (uncredited)

Cay Forester as Mary Chilcutt (uncredited)

Susan French as Violet (uncredited)

John Furlong as Mr. Taylor (uncredited)

James W. Gavin as Corporate Jet Pilot (uncredited)

Ted Gehring as Mechanic (uncredited)

Redmond Gleeson as Passenger (uncredited)

Virginia Gregg as Lily (uncredited)

Bob Hastings as Freeman's Friend at Airport (uncredited)

Monika Henreid as Nini Martin (uncredited)

Pitt Herbert as Passenger (uncredited)

Tad Horino as Passenger (uncredited)

Robert Ito as Passenger (uncredited)

Jeanne Joe as Passenger (uncredited)

Virginia Vincent as Gina Arriba - Passenger (uncredited)

Lloyd Kino as Passenger (uncredited)

Charles Seel as 50th Anniversary Celebrant - Passenger (uncredited)

George Wyner as Harry - Passenger That Sees the Oil Leak (uncredited)

Robert Lussier as Harleigh