George Clooney

Augustine Lofthouse

Felicity Jones

Sully

David Oyelowo

Adewole

Caoilinn Springall

Iris

Kyle Chandler

Mitchell

Demián Bichir

Sanchez

Tiffany Boone

Maya

Sophie Rundle

Jean

Ethan Peck

Young Augustine

Tim Russ

Mason Mosley

Miriam Shor

Mitchell's Wife

Lilja Nótt Þórarinsdóttir

Frantic Woman - Katherine

Hanna María Karlsdóttir

Older Woman

Atli Óskar Fjalarsson

Soldier

Tia Bannon

Jasmine

Grant Crookes

Scientific Beneficiary (uncredited)