On her birthday, Kara Zor-El’s galactic joyride turns into a violent interstellar quest for justice when a young warrior named Ruthye crosses her path. Read more below!
Supergirl (2026): At a Glance
| Release Date | June 26, 2026 (US); June 25, 2026 (Australia and select markets) |
| Directors | Craig Gillespie |
| Writers | Ana Nogueira |
| Main Cast | Milly Alcock, Eve Ridley, Jason Momoa, Matthias Schoenaerts, David Corenswet |
| Rating | PG-13 |
| Runtime | 1 hour 50 minutes |
| Genre | Superhero, Action, Adventure, Drama, Sci-Fi |
| Where to watch | Theaters June 26; HBO Max to follow |
| Summary | On her birthday, Kara Zor-El’s galactic joyride turns into a violent interstellar quest for justice when a young warrior named Ruthye crosses her path. |
She survived the destruction of Krypton, crashed the Fortress of Solitude, and stole the spotlight from Superman in his very own movie. Now, with the “Supergirl” movie hitting theaters in June, Kara Zor-El is finally ready for her solo moment. Directed by Craig Gillespie and starring Milly Alcock, this DCU solo debut takes the Girl of Steel far from Earth and into the deep reaches of the universe, when her birthday celebrations turn into a quest for justice. Fans exploded with excitement during Alcock’s scene-stealing cameo in “Superman” (2025), and anticipation has only grown!
At StreamSafely, we couldn’t be more excited to see this Supergirl movie unfold on the big screen. But as always, our mission has been to make sure fans can find their favorite films and shows on trustworthy platforms because a great movie deserves a great viewing experience, free from the risks that come with known illegal streaming sites and unauthorized distributors. Whether you’re watching at home or heading to the theater, we’ve got everything you need to know before Supergirl takes flight.
Everything You Should Know Before Seeing Supergirl (2026)
Supergirl — Kara Zor-El, Superman’s Kryptonian cousin — has been a cornerstone of DC Comics lore since her debut in 1959’s Action Comics #252. Over the decades, her character has appeared in animated series, comic book runs, and feature films, perhaps most famously in the 1984 theatrical release “Supergirl” starring Helen Slater.
Nowadays, Supergirl is synonymous with the long-running live-action television series “Supergirl” that aired from 2015 to 2021. The TV show — not to be confused with the 2026 film — starred Melissa Benoist as Kara Danvers and began its run on CBS before moving to The CW, where it ran for six seasons and crossed over with the Arrowverse. The series and the 2026 film are entirely separate productions set in different universes, so viewers new to the character don’t need to watch the show before heading to theaters this summer.
How The Supergirl (2026) Movie Came To Be
The 2026 film was born out of James Gunn and Peter Safran’s sweeping reboot of the DC Universe. At the DC slate reveal in January 2023, Gunn announced the project would adapt Tom King’s 2021–22 comic book miniseries “Supergirl: Woman of Tomorrow” that reimagines Kara as a flawed, complex character rather than a squeaky-clean hero. “I love his take on these characters,” Gunn said. “He just turns them slightly to be something very unique.”
Writer Ana Nogueira was hired to pen the screenplay back in November 2023, and Australian director Craig Gillespie was in talks to direct in April 2024.
Milly Alcock had already been confirmed as Kara Zor-El in January 2024, and appeared briefly — just 12 seconds — at the end of “Superman” (2025). The film is the second entry in the DCU’s cinematic slate of Chapter One: Gods and Monsters, which also includes the 2025 “Superman” film starring David Corenswet.
All About Supergirl (2026)
She didn’t come to save the day. She came to party.
On her birthday, Kara Zor-El — a Kryptonian who survived the death of her planet — sets off on a galactic joyride with her dog, Krypto. But when fate drops a young warrior named Ruthye into her path, Kara Zor-El finds herself on a violent interstellar quest for revenge across the cosmos.
Director: Craig Gillespie
Craig Gillespie was born in Sydney, Australia, and studied illustration and advertising at the School of Visual Arts in New York City.
His breakthrough in narrative film came with the dramedy “Lars and the Real Girl” (2007), starring Ryan Gosling. From there, Gillespie built an impressive roster that includes “Fright Night” (2011), “The Finest Hours” (2016), and most notably “I, Tonya” (2017), which garnered an Oscar win for Allison Janney for her role as LaVona and a nomination for Margot Robbie, who played the titular Tonya.
Cast & Crew
Milly Alcock stars as Supergirl. The Australian actress first captured global attention as the young Princess Rhaenyra Targaryen in HBO’s “House of the Dragon” (2022-present), for which she was nominated for Best Supporting Actress in a Drama Series by the Critics’ Choice Television Awards. She has since been seen opposite Meghann Fahy and Julianne Moore in Netflix’s limited series “Sirens” (2025).
Alongside her, British actress Eve Ridley plays Ruthye Marye Knoll. At just 14 years old, Ridley is already a remarkable screen presence, having appeared in Netflix’s “3 Body Problem” (2024-present), the fourth season of “The Witcher” (2025), and numerous voice roles, including in “Peppa Pig” (2204-present) and the animated series “Isadora Moon” (2023-present).
Perhaps most intriguingly, Jason Momoa makes his debut as Lobo — a wildly different character from the Aquaman he played in the old DC Extended Universe. Lobo and Aquaman exist in entirely separate fictional universes: Momoa’s Arthur Curry was part of the Zack Snyder-era DCEU, which has since been rebooted, while this Lobo is a brand-new portrayal within James Gunn’s DCU, with no connection whatsoever to Atlantis or the sea.
Read below to see other members of this epic cast:
- Milly Alcock: Kara Zor-El / Supergirl
- Eve Ridley: Ruthye Marye Knoll
- Jason Momoa: Lobo
- Matthias Schoenaerts: Krem of the Yellow Hills
- David Corenswet: Kal-El / Superman
- David Krumholtz: Zor-El
- Emily Beecham: Alura In-Ze
- Diarmaid Murtagh: Drom Baxton
- Ferdinand Kingsley: Elias Knoll
- Alice Hewkin: Sklarian Raider
- Wil Coban: Brute
The crew includes:
- Director: Craig Gillespie
- Writers: Ana Nogueira
- Producers: Nigel Gostelow, Chantal Nong Vo, Lars P. Winther, James Gunn, Peter Safran
- Composers: Claudia Sarne
- Production Companies: Warner Bros. Pictures, DC Studios, Troll Court Entertainment, The Safran Company
Genre
Like its 2025 counterpart, “Superman,” “Supergirl” is tagged on IMDb as Superhero, Adventure, and Sci-Fi, with the added categories of Action, Drama, and Space Sci-Fi.
Runtime
The Supergirl movie is slated to run 1 hour and 50 minutes, 19 minutes shorter than “Superman” (2025).
Rating
“Supergirl” has been rated PG-13 by the Motion Picture Association for Violence, Action, and Language, and Smoking.
Theatrical Release Date
“Supergirl” is scheduled for a wide theatrical release in the United States on June 26, 2026, with select international markets, including Australia, receiving it a day earlier on June 25.
Official Supergirl Trailer
She may be a mess, but she’s about to take on the entire cosmos. Get ready to fly alongside Supergirl through the alien worlds of outer space in DC and Warner Brothers’ official teaser trailer.
How To Stream Supergirl (2026)
“Supergirl” arrives in theaters in June 2026, and if “Superman” (2025) is any indication, it won’t be long before it makes its way to HBO Max. Between the theatrical run and the home streaming debut, fans should be careful about where they look and steer clear of unfamiliar sites. Illegal streaming sites often appear legitimate and can dupe viewers, but the pirated content carries risks of malware and data theft.
StreamSafely exists to guide viewers to legitimate, high-quality platforms where they can watch “Supergirl” as it was meant to be seen. Once the film is available to stream, our online movie database will be updated with the full list of legal options.
Few films this year have generated the kind of excitement that “Supergirl” has, and every sign points to this being one of the defining superhero films of the decade. We’ll be there opening weekend, and we hope you will be too!
