Is Supergirl on HBO Max? It Has Been Streaming Since Sept. 10 — Runtime, Cast and the ASL Version

Short version — Supergirl is on HBO Max now. It arrived Thursday, Sept. 10, 2026, exclusively and worldwide, and the HBO channel premiere followed on Saturday, Sept. 12. Nothing left to wait for: open HBO Max and search the title.

Key takeaways

• Supergirl has been streaming on HBO Max since Thursday, Sept. 10, 2026 — exclusively, worldwide. No other service carries it.
• Runtime is 108 minutes, and an American Sign Language edition sits alongside it as a separate title in the app.
• The 8 p.m. ET time still circulating belonged to the HBO channel premiere on Sept. 12, not the streaming release. Both dates are behind us.

Is Supergirl on HBO Max yet?

Yes. Warner Bros. Discovery announced Sept. 10 as the streaming date and that date has passed, so the film is in the catalogue for every HBO Max tier, the ad-supported plan included.

If it is not showing on your home screen, that is a row-refresh problem rather than a release problem — search the title directly, or close and reopen the app. The rows repopulate on their own schedule, which is not the same as the title going live.

For the record, here is the clock the release ran on. Warner Bros. Discovery never published an hour; HBO Max opens its films at midnight Pacific as a matter of habit, the same pattern Superman followed a year earlier.

Why the whole industry lands on a Los Angeles midnight is explained in our release-times guide. If you are deciding what to keep subscribed to this autumn, the weekly-versus-complete chart is the faster read.

Is there an ASL version?

Yes, and it goes up the same day on HBO Max — an American Sign Language edition performed by Catalene Sacchetti and directed by Jonaz McMillan. It is a separate title in the app rather than an audio track, so search for it directly.

How long is Supergirl, and who is in it?

108 minutes. Craig Gillespie directed from a script by Ana Nogueira, with Milly Alcock as Kara Zor-El, Matthias Schoenaerts, Eve Ridley, David Krumholtz, Emily Beecham, David Corenswet and Jason Momoa.

How fast did it get to streaming?

Seventy-six days from cinema to couch. That is the whole story of the 2026 window in one number — and it is worth seeing next to the film's theatrical run.

Where can you watch Supergirl?

HBO Max, and only HBO Max on streaming — it is a Warner Bros. film on a Warner Bros. service, so there is no Netflix or Prime Video version to wait for. Every tier carries it; the ad-supported plan included. Current pricing for all three tiers is in our plans and prices rundown.

👉 The Saturday HBO airing has been and gone, so streaming is now the only route — and the only one that carries the ASL edition.

FAQ

Do I need a particular HBO Max plan? No. Every tier carries it, including the ad-supported one.

Is Supergirl on Netflix or Prime Video? No. It is a Warner Bros. film on a Warner Bros. service, so HBO Max is the only streaming home.

How long is it? 108 minutes.

What else landed that day? A crowded slate: three complete seasons and a live NFL game. The Sept. 10 rundown has all of it. For what is arriving now, see the week of Sept. 21.

Are other big titles dropping whole or weekly this fall? Both, and the split is tracked in our weekly-versus-binge guide. Recent examples sit on the Crew Girl and The Paper pages.

Where do you keep these? Every timing page lives under Release Times, and HBO Max news sits with Hulu, Max and Peacock.

Sources

• Warner Bros. Discovery announcement — streaming date, HBO premiere, ASL version
• Screen Rant — Supergirl HBO Max release details
• MovieWeb — runtime, window and box office

By the Streaming On Air desk · Updated 5:05 a.m. ET