Jamie Lee Curtis as Kelly Foster

William Baldwin as Steve Baker

Donald Sutherland as Captain Robert Everton

Joanna Pacula as Nadia Vinogradova

Marshall Bell as J.W. Woods Jr.

Sherman Augustus as Richie

Cliff Curtis as Hiko

Julio Oscar Mechoso as Squeaky

Levan Uchaneishvili as Captain Alexi

Yuri Chervotkin as Colonel Kominski

Keith Flippen as Captain Lonya Rostov

Olga Rzhepetskaya-Retchin as Cosmonaut

David Eggby as Norfolk Captain