# The 18 Best Sci-Fi TV Series Finales

> Cosmic reveals, time loops and quiet goodbyes, plus a few endings fans still argue about.

*By YPB Team · Published October 20, 2026 · https://youpick.best/ranking/the-18-best-sci-fi-tv-series-finales*

---

## Current results (no votes yet)

1. **Battlestar Galactica: Daybreak** — score 1000/1000
   The 2009 finale of Battlestar Galactica that resolved the fleet's search for Earth in a sprawling three-part episode.
2. **Stranger Things: The Rightside Up** — score 591/1000
   The 2025 finale of Stranger Things that brought the Hawkins story to its close.
3. **Lost: The End** — score 542/1000
   The 2010 finale of Lost that revealed the sideways world and gathered the survivors for a last reunion.
4. **Star Trek TNG: All Good Things...** — score 542/1000
   The 1994 time-bending finale of The Next Generation that put Picard and Q on trial across three timelines.
5. **Quantum Leap: Mirror Image** — score 487/1000
   The 1993 finale of Quantum Leap, in which Sam Beckett leaps into a bar and meets a mysterious bartender.
6. **Stargate SG-1: Unending** — score 487/1000
   The 2007 tenth-season finale of Stargate SG-1, which sent the team through decades in a stasis-field time loop.
7. **Person of Interest: return 0** — score 422/1000
   The 2016 finale of Person of Interest in which the team sacrifices itself to shield the Machine.
8. **Fringe: An Enemy of Fate** — score 345/1000
   The 2013 finale of Fringe that finally launched the plan to defeat the Observers.
9. **Babylon 5: Sleeping in Light** — score 345/1000
   The quiet 1998 farewell to Babylon 5, set twenty years later around the death of John Sheridan.
10. **Star Trek: Picard: The Last Generation** — score 345/1000
   The 2023 finale of Picard that reunited the full Next Generation crew on the Enterprise-D.
11. **Futurama: Into the Wild Green Yonder** — score 345/1000
   The 2013 series wrap-up of Futurama, a feature-length run of time loops and a cosmic chase.
12. **Doctor Who: The End of Time** — score 253/1000
   The two-part 2010 story that ended David Tennant's Tenth Doctor with a tearful regeneration.
13. **Orphan Black: To Right the Wrongs** — score 253/1000
   The 2017 finale of Orphan Black that closed the clone saga on Sarah and Helena's terms.
14. **Dark: Paradise** — score 253/1000
   The 2020 finale of Dark that untangled the knot of time loops across three worlds.
15. **Star Trek Voyager: Endgame** — score 0/1000
   The 2001 Voyager finale in which an older Janeway rewrites history to bring the crew home.
16. **Star Trek DS9: What You Leave Behind** — score 0/1000
   The 1999 Deep Space Nine finale that closed the Dominion War and Sisko's journey with the Prophets.
17. **The Expanse: Babylon's Ashes** — score 0/1000
   The 2022 finale of The Expanse that wrapped up the war with Marco Inaros.
18. **Legion: Chapter 27** — score 0/1000
   The 2019 finale of Legion that rewound to the moment David's story began.

Tags: tv shows, sci-fi, finales