Currently available on 2 streaming services.

Supergirl - watch online: streaming, buy or rent

Currently you are able to watch "Supergirl" streaming on Netflix, HBO Go.

Cast

Melissa Benoist
Kara Danvers / Supergirl / Kara Zor-El
Chyler Leigh
Alex Danvers / Sentinel
David Harewood
J'onn J'onzz / Martian Manhunter
Katie McGrath
Lena Luthor
Jesse Rath
Querl 'Brainy' Dox / Brainiac-5
Nicole Maines
Nia Nal / Dreamer
Azie Tesfai
Kelly Olsen / Guardian
Julie Gonzalo
Andrea Rojas / Acrata
Staz Nair
William Dey
Peta Sergeant
Nyxlygsptlnz / 'Nyxly'