Quick TakeArticle at a glance
- Streaming options in the United States, updated Sep 15, 2026.
- This one is new to streaming, which is why the guide above matters more than usual.
- Milly Alcock's Kara Zor-El turns up at the end of Superman (2025) and the same actor carries this film, so watching our Superman guide's film first gives you the handover — but the story here is a self-contained interstellar journey and it explains itself.
Film guide
- Superhero
- Action
- Stars
- Milly Alcock · Matthias Schoenaerts · Eve Ridley
Images: HBO Max
Where to watch Supergirl
Streaming options in the United States, updated Sep 15, 2026. More from hbomax.com. Service logos are trademarks of their owners.
Videos 1
Supergirl | Official TrailerDC · YouTube
Supergirl has only just reached streaming, and no, you do not need Superman first
This one is new to streaming, which is why the guide above matters more than usual. Supergirl played US cinemas from June 26, 2026, and HBO Max announced that it began streaming exclusively on the service on September 10, 2026. It runs 108 minutes, directed by Craig Gillespie and written by Ana Nogueira.
The prerequisite question has a short answer. Milly Alcock’s Kara Zor-El turns up at the end of Superman (2025) and the same actor carries this film, so watching our Superman guide’s film first gives you the handover — but the story here is a self-contained interstellar journey and it explains itself. David Corenswet and Jason Momoa appear in support; the rest of the cast above is new, and our earlier breakdown of what Supergirl means for the DCU covers the wider slate.
It is worth being honest about how it landed. Wikipedia’s release and reception section records a worldwide gross of about $126 million, a 53% Rotten Tomatoes score across 372 reviews, a Metacritic of 50 and a B− CinemaScore — a long way short of Superman. That has not changed the plan: Supergirl is set to have a major role in Man of Tomorrow in 2027, so this is the film that sets her up.
Supergirl cast 7
Milly AlcockKara Zor-El / Supergirl
Matthias SchoenaertsKrem of the Yellow Hills
Eve RidleyRuthye Marye Knoll
David KrumholtzZor-El
Emily BeechamAlura In-Ze
David CorenswetKal-El / Clark Kent / Superman
Jason MomoaLobo
- Director
- Craig Gillespie
- Writer
- Ana Nogueira
- Music
- Claudia Sarne
- Studios
- DC Studios
Photos via Wikimedia Commons. Milly Alcock: Margaret Gardiner, CC BY 4.0; Matthias Schoenaerts: Joost Pauwels, CC0; Eve Ridley: Margaret Gardiner, CC BY 4.0; David Krumholtz: Montclair Film, CC BY 2.0; Emily Beecham: Pedro J Pacheco, CC BY-SA 4.0; David Corenswet: U.S. Embassy in the Philippines, Public domain; Jason Momoa: Gage Skidmore from Peoria, AZ, United States of America, CC BY-SA 2.0.
More Supergirl coverage
ListsSupergirl Is HBO Max’s New DC Watch This Week
Comic Book CoSupergirl Actor David Krumholtz Says He Has Put His Acting Career On Hold
Movie NewsSupergirl Box Office: $125.9M Ends Run as Modern DC’s Lowest
DCSupergirl (2026): Cast, Story, and What It Means for the DCU
ComicsJames Gunn Declares Milly Alcock as Supergirl His “Best Casting Choice Ever”
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Frequently Asked Questions
Where can I watch Supergirl?
Supergirl streams on HBO Max in the US (subscription), checked September 15, 2026.
When did Supergirl come out?
June 26, 2026 in US theaters. It began streaming on HBO Max on September 10, 2026.
How long is Supergirl?
108 minutes.
Do I need to watch Superman before Supergirl?
No. Milly Alcock’s Kara appears at the end of Superman (2025), so that film gives you the handover, but Supergirl is a self-contained story.
