For a science-fiction watch on Tubi, start with the kind of story you want: Coherence and Source Code turn reality into a puzzle; Snowpiercer uses an icy future to examine class; and Moon and Frequency put personal identity and family at the center. Tubi’s September 29, 2026, list describes these films as streaming free on the service, but several of its stated availability dates have passed. Check the title in your region before settling in.
Choose by the kind of science fiction you want
This selection ranges from speculative AI and time travel to social collapse, survival, and alien suspense. Tubi’s article puts the appeal plainly: “Science fiction gets much bigger than outer space.” The films below are grouped by viewing mood, not ranked by quality.
- For a reality-bending puzzle: Coherence or Source Code.
- For social allegory: Snowpiercer.
- For character-led drama: Moon or Frequency.
- For a more playful apocalypse: Night of the Comet.
- For classic alien suspense: The Thing From Another World.
10 standout sci-fi movies on Tubi
1. I, Robot (2004)
Runtime: 1h 55m. Rating: PG-13. Detective Del Spooner, played by Will Smith, investigates a scientist’s death in a society where robots are commonplace and are supposed to be unable to harm people. The mystery raises questions about trust in AI and how much decision-making people should hand to machines. Tubi’s September 29, 2026 article listed it as available until October 14, 2026; check the live listing for current availability.
2. Snowpiercer (2013)
Runtime: 2h 6m. Rating: R. After a climate intervention freezes Earth, the survivors live aboard a train whose cars are divided by class. Moving through the train reveals who benefits from its social order—and who pays for it. Tubi’s article listed availability through September 30, 2026, a date that has passed as of October 7, 2026, so current playability is not established here.
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3. Coherence (2013)
Runtime: 1h 28m. Rating: TV-MA. A dinner party coincides with a comet and a power outage; small inconsistencies soon turn an ordinary gathering into a disorienting reality puzzle. Its contained setting keeps the focus on people trying to make sense of what is happening. Tubi’s article said it was available “until further notice,” which is not a guarantee of present availability.
4. Moon (2009)
Runtime: 1h 37m. Rating: R. Near the end of a lunar mining contract, Sam Bell’s isolation is interrupted by an accident and a discovery that unsettles his understanding of his work, memories, and identity. This is a character-centered choice for viewers who want their science fiction to dwell on existential questions. Tubi’s article listed it through September 30, 2026; that date has passed, and current availability is unconfirmed.
5. The Man From Earth (2007)
Runtime: 1h 27m. Rating: TV-PG. A professor tells his colleagues that he has lived for roughly 14,000 years. The film works through the claim in conversation, using history, religion, biology, memory, and friendship as its terrain rather than relying on elaborate machines or flashbacks. Tubi’s article listed availability until December 31, 2050; that date is the listing reported by the article, not a guarantee that the film will remain playable in every region.
6. Frequency (2000)
Runtime: 1h 59m. Rating: PG-13. A ham radio connects a New York detective with his firefighter father thirty years in the past, giving him a chance to change a formative death. The intimate wish to speak with a lost parent becomes a thriller about consequences and altered timelines. Tubi’s article listed availability until January 1, 2036.
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7. Biosphere (2022)
Runtime: 1h 47m. Rating: TV-MA. Two men survive in a sealed biodome after a catastrophe. As their ecosystem changes, so do the questions the film asks about adaptation, friendship, and humanity. Tubi’s article listed availability until August 31, 2027.
8. Source Code (2011)
Runtime: 1h 33m. Rating: PG-13. Captain Colter Stevens repeatedly experiences the final eight minutes of a commuter train journey as he tries to identify a bomber. Repetition makes details newly meaningful, giving the movie the shape of a time-loop thriller and a puzzle. Tubi’s article listed availability through September 30, 2026, which has passed; current playability is not established.
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9. Night of the Comet (1984)
Runtime: 1h 35m. Rating: PG-13. After a comet wipes out most of humanity, two sisters navigate an emptied Los Angeles, with zombies and sinister scientists complicating their survival. The result is an unusually playful, personality-led take on the apocalypse. Tubi’s article listed it through September 30, 2026; check the current regional listing rather than assuming it remains available.
10. The Thing From Another World (1951)
Runtime: 1h 27m. Rating: TV-PG. Arctic scientists and military personnel discover an extraterrestrial visitor beneath the ice. The suspense grows from the clash between scientific curiosity and the need to survive. Tubi’s article said it was available “until further notice,” a phrase that does not confirm current availability.
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Check Tubi availability before you watch
Streaming catalogs change, and the dates in Tubi’s September 29, 2026 article are time-sensitive. As of October 7, 2026, its listed September 30 end dates for Snowpiercer, Moon, Source Code, and Night of the Comet have passed. The article also lists future end dates for some titles and uses “until further notice” for others, but those statements should not be treated as a current guarantee for every country.
Tubi’s Sci-Fi catalog is a useful starting point, but a catalog snapshot does not establish that every film in this list is currently playable. Search for the individual movie in Tubi in the region where you plan to watch. Tubi’s original list is Tubi’s September 29, 2026 article; its availability details are the source of the dates above.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
