From Galaxy Quest to Minority Report, Tubi has science fiction movies of every flavor — and they're all free to stream.

One of the most critically-acclaimed sci-fi movies ever is a decade old in 2026, but time is running out to watch it for free ...

If you’re looking for some good sci-fi to watch without spending any money, Prime Video has a few solid options available for free. From dark thrillers to time-bending stories set in the future, these ...