DC Studios’ “Supergirl,” starring Milly Alcock, is set for its global streaming debut on HBO Max on Thursday, September 10, 2026. HBO also schedules the film to air later on HBO’s linear channel on Saturday, September 12 at 8 p.m. ET.
HBO Max exclusivity for the streaming release is emphasized across outlets, with coverage aligning on both the September 10 start date and the September 12 linear premiere. Deadline and ComingSoon note that an American Sign Language (ASL) version will also stream on HBO Max the same day as the main debut.
Polygon likewise reports the official streaming date, describing the HBO Max rollout as beginning the following week relative to its publication. ComingSoon additionally frames its update as including promotional material and references to the film’s broader home viewing options, reflecting a more audience-facing angle rather than changes to the release schedule.
