TV Series
Where to Watch Ancient Aliens Season 21
You can watch season 21 of Ancient Aliens on Netflix, Hulu, Prime Video, Philo, HISTORY Vault, Pure Flix, and History in the United States. It is also free on Pluto TV, hoopla, Spectrum On Demand, The Roku Channel, Tubi TV, and History. You can also rent or buy it on Prime Video, Fandango at Home, and Apple TV Store. Verified Sep 25, 2026.
Watch free
Verified Sep 25, 2026.
Episodes
- S21E01 — The Top Ten Extraordinary Discoveries2025-02-07
- S21E02 — The Top Ten Mysterious Monoliths2025-02-14
- S21E03 — The Top Ten UFO Crashes2025-02-21
- S21E04 — The Top Ten Unexplained Technologies2025-02-28
- S21E05 — The Top Ten Secret Projects2025-03-07
- S21E06 — The Top Ten Mysterious Mountains2025-03-14
- S21E07 — Mysteries of the Aztecs2025-03-21
- S21E08 — The Glowing Orb Phenomenon2025-03-28
- S21E09 — The Legacy of J. Allen Hynek2025-08-29
- S21E10 — The Volcano Factor2025-09-05
- S21E11 — The Birdman Mystery2025-09-12
- S21E12 — The Abduction Files2025-09-19
- S21E13 — The Giants2025-10-02
- S21E17 — Secrets of Japan2025-11-06
Seasons and episodes
Watch links for each season and episode are the same services that carry Ancient Aliens.
- Season 16 episodes
- Season 210 episodes
- Season 316 episodes
- Season 410 episodes
- Season 512 episodes
- Season 611 episodes
- Season 78 episodes
- Season 88 episodes
- Season 912 episodes
- Season 109 episodes
- Season 1115 episodes
- Season 1215 episodes
- Season 1315 episodes
- Season 1417 episodes
- Season 1512 episodes
- Season 1610 episodes
- Season 177 episodes
- Season 1810 episodes
- Season 1920 episodes
- Season 2020 episodes
- Season 2114 episodes
- Season 222 episodes
Where to Watch Ancient Aliens Season 21 — common questions
- Where to watch Ancient Aliens Season 21?
- You can watch season 21 of Ancient Aliens on Netflix, Hulu, Prime Video, Philo, HISTORY Vault, Pure Flix, and History in the United States. It is also free on Pluto TV, hoopla, Spectrum On Demand, The Roku Channel, Tubi TV, and History. You can also rent or buy it on Prime Video, Fandango at Home, and Apple TV Store.
- Where can I watch Ancient Aliens Season 21?
- You can watch season 21 of Ancient Aliens on Netflix, Hulu, Prime Video, Philo, HISTORY Vault, Pure Flix, and History in the United States. It is also free on Pluto TV, hoopla, Spectrum On Demand, The Roku Channel, Tubi TV, and History. You can also rent or buy it on Prime Video, Fandango at Home, and Apple TV Store.