Project Hail Mary is expected to start streaming on Prime Video in early to mid-June 2026 , but there’s no official date yet. Current estimates from entertainment outlets cluster around June 3, June 5, or June 12, 2026 , based on typical theatrical-to-streaming windows and Amazon MGM’s release pattern.

What’s known

  • The film was released in theaters on March 20, 2026.
  • It will stream exclusively on Prime Video once it leaves theaters.
  • A common estimate is a 45-75 day window to digital/PVOD first, followed by streaming a few weeks later.

Best guess

  • Earliest plausible streaming date: June 3, 2026.
  • Most likely rough window: June 5-12, 2026.

If you want, I can also give you the likely digital rental date vs. streaming date split.