How to Watch Supergirl (2026) Online in 4K

Supergirl — Craig Gillespie's origin film for Kara Zor-El as part of the new DC Universe — is released by Warner Bros. Pictures on June 26, 2026. It is in cinemas now, and InfinityTV's library of 150,000+ Movies & Series will carry it in 4K Ultra HD when it arrives on demand.

What Is Supergirl (2026)?

Supergirl is a superhero film directed by Craig Gillespie and released by Warner Bros. Pictures. Supergirl is a 2026 American superhero film directed by Craig Gillespie from a screenplay by Ana Nogueira. It is part of the new DC Universe led by James Gunn and Peter Safran and is distributed by Warner Bros. Pictures in the United States, where it was released on June 26, 2026. The film premiered in Brooklyn on June 22, 2026.

The film stars Milly Alcock as Kara Zor-El/Supergirl and introduces her as a new central character in the DC Universe — distinct from the television Supergirl played by Melissa Benoist from 2015 to 2021 and the Sasha Calle version from The Flash (2023).

The Full Cast

• Milly Alcock as Kara Zor-El / Supergirl
• Jason Momoa as Lobo
• Eve Ridley as Ruthye Marye Knoll
• Matthias Schoenaerts as Krem of the Yellow Hills
• David Krumholtz as Zor-El (Kara's father)
• Emily Beecham as Alura In-Ze (Kara's mother)
• David Corenswet as Kal-El / Clark Kent / Superman

The Source Material

The screenplay draws on the DC Comics arc Supergirl: Woman of Tomorrow (2021-2022) by Tom King, illustrated by Bilquis Evely — an eight-issue series that reimagined Supergirl as a world-weary, emotionally complex hero on a galactic road trip with a young girl named Ruthye. The story is more mature and morally complicated than traditional superhero origin films, and its visual richness made it an obvious choice for cinematic adaptation.

Milly Alcock as Supergirl

Milly Alcock — an Australian actress who came to international prominence playing young Rhaenyra Targaryen in House of the Dragon's first series — has the physical presence and emotional range the role demands. Her portrayal of Rhaenyra combined vulnerability, ambition, and barely contained power in a way that made her one of the most discussed new television performances of recent years. Those qualities translate directly to Kara Zor-El in the Woman of Tomorrow version of the character: a hero who is powerful but not invulnerable, who carries psychological weight, and who is capable of moral complexity.

Jason Momoa as Lobo

Lobo is one of DC's most distinctive characters — an intergalactic mercenary and bounty hunter, deeply amoral, deeply funny, and impossibly dangerous. The character is typically played entirely for comedic excess in the comics, and his appearance in Supergirl indicates a lighter tonal register in the film than Tom King's source material might suggest.

Jason Momoa — who built his DC career as Aquaman — brings exactly the physicality and ease with absurdist humour that the character requires. His transition from Aquaman to Lobo within the new DC Universe is one of the more interesting actor-character reassignments in franchise history.

Craig Gillespie as Director

Craig Gillespie's career features a consistent interest in stories about people navigating fame, infamy, and public perception. I, Tonya (2017) was a brilliant deconstruction of the Tonya Harding story told through conflicting unreliable narrators. Pam & Tommy (2022) brought the same fractured-perspective approach to the Pamela Anderson and Tommy Lee scandal. Cruella (2021) applied that visual energy to a superhero-adjacent origin story within Disney's IP ecosystem.

Supergirl's Woman of Tomorrow material — a Kara who is not celebrated but is doing a difficult job in a morally ambiguous universe — suits a director who is consistently drawn to complicated protagonists misunderstood by the world around them.

How to Watch Supergirl in 4K on InfinityTV

Supergirl opened in cinemas on June 26, 2026. After its theatrical run concludes, it will arrive on InfinityTV's on-demand platform. To watch it in 4K when it streams:

1. Visit InfinityTV and choose a subscription plan — all plans include the full on-demand library of 150,000+ Movies & Series.
2. Download the InfinityTV app on your Smart TV, Fire Stick, Apple TV, Android TV, iOS, or Android device.
3. Search for "Supergirl" once the film is available in the on-demand catalogue.
4. Select the 4K stream — InfinityTV's infrastructure operates at 99.9% uptime for consistent, buffer-free 4K playback.

Warner Bros. theatrical releases typically reach streaming platforms within 45-90 days of their theatrical opening, which means Supergirl should be available on demand by late summer or autumn 2026.

Watching Supergirl on Every Device

InfinityTV supports all major streaming devices:

• Amazon Fire Stick 4K and Fire TV — see the Fire Stick streaming guide for setup
• Smart TVs — Samsung, LG, Sony, and others
• Android TV / Google TV boxes
• Apple TV (App Store)
• iOS and Android phones and tablets
• Web browser — Windows and Mac

InfinityTV also provides 24/7 customer support for activation and playback questions.

Supergirl and the New DC Universe

Supergirl is part of the structured DC Universe (DCU) being built by James Gunn (as co-CEO of DC Studios) and Peter Safran. The new DCU began with Superman (2025), directed by James Gunn and starring David Corenswet as Clark Kent, and is designed as a coherent shared universe with consistent continuity — a reset from the previous DC Extended Universe.

Corenswet's Clark Kent/Superman appears in Supergirl, establishing the new Superman in his relationship with his cousin Kara. The two characters' dynamic is one of the foundations of the new DCU's tone and direction.

Creature Commandos (2024) and Superman (2025) are the primary required viewing for full context, though Supergirl is designed to be accessible as a standalone origin story.

Why Woman of Tomorrow Is the Right Supergirl Story

Tom King's Woman of Tomorrow (2021-2022) arrived at a moment when superhero origin stories had become formulaic to the point of predictability. King's approach was deliberately different: begin with a Kara who already knows who she is, already has her powers, and is already exhausted. The emotional terrain is not the discovery of power but the weight of it.

The galactic road trip with Ruthye — a young woman seeking vengeance for her father's murder — gives the film's second character a clear human motivation that grounds the cosmic-scale adventure. It is a significantly more mature emotional premise than most superhero origin films, and the quality of the source material is a genuine asset to the adaptation.

More DC and Action Films on InfinityTV

For other major action films available now, check out our Avengers: Doomsday guide for Marvel's December 2026 event film. The Odyssey offers epic action-fantasy from Christopher Nolan. For all current additions to the action and superhero library, visit new 2026 movie releases or the best 4K streaming guide.

InfinityTV's 22,000+ live TV channels include entertainment channels covering the DC Universe's rollout in real time.

Is Supergirl (2026) Connected to Previous DC Films?

The 2026 Supergirl is part of the new DC Universe (DCU) built by James Gunn and Peter Safran — a deliberate reset from the previous DC Extended Universe that ran from Man of Steel (2013) through The Flash (2023). It shares continuity with Superman (2025) and Creature Commandos (2024) but is designed to be accessible as a standalone story for viewers who have not followed the new DCU from its beginning.

The most important connection for new viewers is David Corenswet's appearance as Clark Kent/Superman. Corenswet established the new version of the character in Gunn's Superman (2025) — a version that is warmer, more optimistic, and more openly idealistic than the Zack Snyder iteration — and his relationship with Kara in this film is one of the new DCU's foundational emotional dynamics. The cousin relationship between Superman and Supergirl, and the way the two characters navigate very different relationships to their Kryptonian heritage, is part of what the new DCU is using to establish its emotional register.

For viewers who have only seen older DC films, the relevant context is minimal: Milly Alcock's Kara Zor-El is a new character, distinct from both the Melissa Benoist television Supergirl (CBS/CW, 2015-2021) and the Sasha Calle version from The Flash (2023). No prior knowledge of any previous DC film or series is required to follow the story.

Frequently asked questions

When does Supergirl (2026) come out and when will it stream? Supergirl was released by Warner Bros. Pictures in the United States on June 26, 2026. After its theatrical run — Warner Bros. releases typically arrive on streaming within 45-90 days — it will be available on InfinityTV's on-demand platform.

Who plays Supergirl in the 2026 film? Australian actress Milly Alcock plays Kara Zor-El/Supergirl. She is best known for playing young Rhaenyra Targaryen in House of the Dragon. This is her first major film leading role.

What DC Comics story is the 2026 Supergirl film based on? The film is adapted from Supergirl: Woman of Tomorrow (2021-2022), an eight-issue DC Comics series by Tom King and illustrator Bilquis Evely. The series reimagined Supergirl as a world-weary hero on a galactic journey with a young companion named Ruthye.

Who else is in the Supergirl cast? The cast includes Jason Momoa as Lobo, Eve Ridley as Ruthye Marye Knoll, Matthias Schoenaerts as Krem of the Yellow Hills, David Krumholtz as Zor-El, Emily Beecham as Alura In-Ze, and David Corenswet as Superman.

Is the 2026 Supergirl connected to the earlier DC films? The 2026 Supergirl is part of the new DC Universe created by James Gunn and Peter Safran — a fresh continuity that began with Superman (2025) and Creature Commandos (2024). It is not directly connected to the previous DC Extended Universe films or the Melissa Benoist Supergirl television series.