# List of Ancient Aliens episodes

Ancient Aliens is an American television series that explores the pseudoscientific ancient astronauts hypothesis, as well as other pseudoscientific and pseudohistoric topics such as advanced ancient civilizations, extraterrestrial contact and ufology, and alleged conspiracy theories, in a non-critical documentary format. Episodes begin and end with rhetorical questions which frame the explored topics. The series has aired on History and other A&E Networks since 2010, and has been a target for criticism of History's channel drift, and criticism for promoting unorthodox or unproven hypotheses as fact. All episodes are narrated by Robert Clotworthy. The series is produced by Prometheus Entertainment.
The series is based on and inspired by the works of Erich von Däniken and Zecharia Sitchin, among other writers. The works of Graham Hancock, Robert Bauval, Brinsley Trench, Charles Hapgood, and Edgar Cayce are also referenced in many episodes. Producer Giorgio Tsoukalos and writer David Childress are often featured as guests.
The series began as a two-hour documentary special in 2009 and continued for three seasons as a flagship series on History. Seasons 4 to 7 aired on H2, with frequent re-airings of episodes on History and other A&E services. In 2015, the series returned to History after H2 was relaunched as Vice on TV. Season 15 premiered in 2020. The series continued with its sixteenth season in November 2020.
As of March 2025, 266 episodes of Ancient Aliens have aired.

## Series overview

| Season | Episodes | Episodes | Originally released | Originally released |
| Season | Episodes | Episodes | First released | Last released |
| Pilot | Pilot | Pilot | March 8, 2009 (2009-3-8) | March 8, 2009 (2009-3-8) |
| 1 | 5 | 5 | April 20, 2010 (2010-4-20) | May 25, 2010 (2010-5-25) |
| 2 | 10 | 10 | October 28, 2010 (2010-10-28) | December 30, 2010 (2010-12-30) |
| 3 | 16 | 16 | July 28, 2011 (2011-7-28) | November 23, 2011 (2011-11-23) |
| 4 | 10 | 10 | February 17, 2012 (2012-2-17) | May 4, 2012 (2012-5-4) |
| 5 | 12 | 12 | December 21, 2012 (2012-12-21) | April 19, 2013 (2013-4-19) |
| 6 | 11 | 11 | September 30, 2013 (2013-9-30) | December 13, 2013 (2013-12-13) |
| 7 | 8 | 8 | January 24, 2014 (2014-1-24) | March 14, 2014 (2014-3-14) |
| 8 | 9 | 9 | June 13, 2014 (2014-6-13) | August 22, 2014 (2014-8-22) |
| 9 | 12 | 12 | October 31, 2014 (2014-10-31) | May 1, 2015 (2015-5-1) |
| 10 | 10 | 10 | July 24, 2015 (2015-7-24) | October 9, 2015 (2015-10-9) |
| 11 | 15 | 15 | May 6, 2016 (2016-5-6) | September 2, 2016 (2016-9-2) |
| 12 | 16 | 16 | April 28, 2017 (2017-4-28) | September 15, 2017 (2017-9-15) |
| 13 | 15 | 15 | April 27, 2018 (2018-4-27) | January 7, 2019 (2019-1-7) |
| 14 | 22 | 22 | May 31, 2019 (2019-5-31) | November 29, 2019 (2019-11-29) |
| 15 | 12 | 12 | January 24, 2020 (2020-1-24) | April 18, 2020 (2020-4-18) |
| 16 | 10 | 10 | November 13, 2020 (2020-11-13) | March 12, 2021 (2021-3-12) |
| 17 | 7 | 7 | August 6, 2021 (2021-8-06) | October 8, 2021 (2021-10-08) |
| 18 | 20 | 20 | January 7, 2022 (2022-01-07) | September 16, 2022 (2022-9-16) |
| 19 | 20 | 20 | January 6, 2023 (2023-01-06) | September 15, 2023 (2023-09-15) |
| 20 | 20 | 20 | January 5, 2024 (2024-01-05) | September 13, 2024 (2024-09-13) |
| 21 | TBA | TBA | February 7, 2025 (2025-2-07) | TBA |

## Broadcast episodes

List of episodes broadcast using the Ancient Aliens title card. Availability of episodes is different in each broadcast market and language.

### Season 1 (2009–10)

The 2009 Ancient Aliens documentary was retitled "Chariots, Gods & Beyond" and packaged as the series pilot. All episodes, except the pilot, carry the Ancient Aliens: The Series title card.
| No. overall | No. in season | Title | Original release date |
| — | — | "Chariots, Gods & Beyond" | March 8, 2009 (2009-3-8) |
| 1 | 1 | "The Evidence" | April 20, 2010 (2010-4-20) |
| 2 | 2 | "The Visitors" | April 27, 2010 (2010-4-27) |
| 3 | 3 | "The Mission" | May 4, 2010 (2010-5-4) |
| 4 | 4 | "Closer Encounters" | May 18, 2010 (2010-5-18) |
| 5 | 5 | "The Return" | May 25, 2010 (2010-5-25) |

### Season 2 (2010)

| No. overall | No. in season | Title | Original release date |
| 6 | 1 | "Mysterious Places" | October 28, 2010 (2010-10-28) |
| 7 | 2 | "Gods and Aliens" | November 4, 2010 (2010-11-4) |
| 8 | 3 | "Underwater Worlds" | November 11, 2010 (2010-11-11) |
| 9 | 4 | "Underground Aliens" | November 18, 2010 (2010-11-18) |
| 10 | 5 | "Aliens and the Third Reich" | November 25, 2010 (2010-11-25) |
| 11 | 6 | "Alien Tech" | December 2, 2010 (2010-12-2) |
| 12 | 7 | "Angels and Aliens" | December 9, 2010 (2010-12-9) |
| 13 | 8 | "Unexplained Structures" | December 16, 2010 (2010-12-16) |
| 14 | 9 | "Alien Devastations" | December 23, 2010 (2010-12-23) |
| 15 | 10 | "Alien Contacts" | December 30, 2010 (2010-12-30) |

### Season 3 (2011)

| No. overall | No. in season | Title | Original release date |
| 16 | 1 | "Aliens and the Old West" | July 28, 2011 (2011-7-28) |
| 17 | 2 | "Aliens and Monsters" | August 4, 2011 (2011-8-4) |
| 18 | 3 | "Aliens and Sacred Places" | August 11, 2011 (2011-8-11) |
| 19 | 4 | "Aliens and Temples of Gold" | August 18, 2011 (2011-8-18) |
| 20 | 5 | "Aliens and Mysterious Rituals" | August 25, 2011 (2011-8-25) |
| 21 | 6 | "Aliens and Ancient Engineers" | September 1, 2011 (2011-9-1) |
| 22 | 7 | "Aliens, Plagues and Epidemics" | September 8, 2011 (2011-9-8) |
| 23 | 8 | "Aliens and Lost Worlds" | September 15, 2011 (2011-9-15) |
| 24 | 9 | "Aliens and Deadly Weapons" | September 22, 2011 (2011-9-22) |
| 25 | 10 | "Aliens and Evil Places" | September 28, 2011 (2011-9-28) |
| 26 | 11 | "Aliens and the Founding Fathers" | October 5, 2011 (2011-10-5) |
| 27 | 12 | "Aliens and Deadly Cults" | October 12, 2011 (2011-10-12) |
| 28 | 13 | "Aliens and the Secret Code" | October 19, 2011 (2011-10-19) |
| 29 | 14 | "Aliens and the Undead" | October 26, 2011 (2011-10-26) |
| 30 | 15 | "Aliens, Gods and Heroes" | November 16, 2011 (2011-11-16) |
| 31 | 16 | "Aliens and the Creation of Man" | November 23, 2011 (2011-11-23) |

### Season 4 (2012)

| No. overall | No. in season | Title | Original release date |
| 32 | 1 | "The Mayan Conspiracy" | February 17, 2012 (2012-2-17) |
| 33 | 2 | "The Doomsday Prophecies" | February 17, 2012 (2012-2-17) |
| 34 | 3 | "The Greys" | February 24, 2012 (2012-2-24) |
| 35 | 4 | "Aliens and Mega-Disasters" | March 2, 2012 (2012-3-2) |
| 36 | 5 | "The NASA Connection" | March 9, 2012 (2012-3-9) |
| 37 | 6 | "The Mystery of Puma Punku" | March 16, 2012 (2012-3-16) |
| 38 | 7 | "Aliens and Bigfoot" | March 23, 2012 (2012-3-23) |
| 39 | 8 | "The Da Vinci Conspiracy" | April 6, 2012 (2012-4-06) |
| 40 | 9 | "The Time Travellers" | April 27, 2012 (2012-4-27) |
| 41 | 10 | "Aliens and Dinosaurs" | May 4, 2012 (2012-5-4) |

### Season 5 (2012–13)

| No. overall | No. in season | Title | Original release date |
| 42 | 1 | "Secrets of the Pyramids" | December 21, 2012 (2012-12-21) |
| 43 | 2 | "Aliens and Cover Ups" | December 28, 2012 (2012-12-28) |
| 44 | 3 | "Alien Power Plants" | January 4, 2013 (2013-1-4) |
| 45 | 4 | "Destination Orion" | January 11, 2013 (2013-1-11) |
| 46 | 5 | "The Einstein Factor" | January 18, 2013 (2013-1-18) |
| 47 | 6 | "Secrets of the Tombs" | January 25, 2013 (2013-1-25) |
| 48 | 7 | "Prophets and Prophecies" | February 8, 2013 (2013-2-8) |
| 49 | 8 | "Beyond Nazca" | February 15, 2013 (2013-2-15) |
| 50 | 9 | "Strange Abductions" | February 22, 2013 (2013-2-22) |
| 51 | 10 | "The Von Daniken Legacy" | April 5, 2013 (2013-4-5) |
| 52 | 11 | "The Viking Gods" | April 12, 2013 (2013-4-12) |
| 53 | 12 | "The Monoliths" | April 19, 2013 (2013-4-19) |

### Season 6 (2013)

| No. overall | No. in season | Title | Original release date |
| 54 | 1 | "The Power of Three" | September 30, 2013 (2013-9-30) |
| 55 | 2 | "The Crystal Skulls" | October 7, 2013 (2013-10-7) |
| 56 | 3 | "The Anunnaki Connection" | October 14, 2013 (2013-10-14) |
| 57 | 4 | "Magic of the Gods" | October 21, 2013 (2013-10-21) |
| 58 | 5 | "The Satan Conspiracy" | October 28, 2013 (2013-10-28) |
| 59 | 6 | "Alien Operations" | November 1, 2013 (2013-11-01) |
| 60 | 7 | "Emperors, Kings and Pharaohs" | November 8, 2013 (2013-11-08) |
| 61 | 8 | "Mysterious Relics" | November 15, 2013 (2013-11-15) |
| 62 | 9 | "Aliens and Forbidden Islands" | November 29, 2013 (2013-11-29) |
| 63 | 10 | "Aliens and the Lost Ark" | December 6, 2013 (2013-12-6) |
| 64 | 11 | "Aliens and Mysterious Mountains" | December 13, 2013 (2013-12-13) |

### Season 7 (2014)

| No. overall | No. in season | Title | Original release date |
| 65 | 1 | "Aliens and Stargates" | January 24, 2014 (2014-01-24) |
| 66 | 2 | "Aliens in America" | January 31, 2014 (2014-01-31) |
| 67 | 3 | "The Star Children" | February 7, 2014 (2014-02-07) |
| 68 | 4 | "Treasures of the Gods" | February 14, 2014 (2014-2-14) |
| 69 | 5 | "Aliens and the Red Planet" | February 21, 2014 (2014-2-21) |
| 70 | 6 | "The Shamans" | February 28, 2014 (2014-2-28) |
| 71 | 7 | "Aliens and Insects" | March 7, 2014 (2014-3-07) |
| 72 | 8 | "Alien Breeders" | March 14, 2014 (2014-3-14) |

### Season 8 (2014)

| No. overall | No. in season | Title | Original release date |
| 73 | 1 | "Alien Transports" | June 13, 2014 (2014-6-13) |
| 74 | 2 | "Mysterious Structures" | June 20, 2014 (2014-6-20) |
| 75 | 3 | "Mysterious Devices" | June 27, 2014 (2014-6-27) |
| 76 | 4 | "Faces of the Gods" | July 25, 2014 (2014-7-25) |
| 77 | 5 | "The Reptilians" | July 25, 2014 (2014-7-25) |
| 78 | 6 | "The Tesla Experiment" | August 1, 2014 (2014-8-01) |
| 79 | 7 | "The God Particle" | August 8, 2014 (2014-8-08) |
| 80 | 8 | "Alien Encounters" | August 15, 2014 (2014-8-15) |
| 81 | 9 | "Aliens and Superheroes" | August 22, 2014 (2014-8-22) |

### Season 9 (2014–15)

| No. overall | No. in season | Title | Original release date |
| 82 | 1 | "Forbidden Caves" | October 31, 2014 (2014-10-31) |
| 83 | 2 | "Mysteries of the Sphinx" | November 7, 2014 (2014-11-7) |
| 84 | 3 | "Aliens Among Us" | November 14, 2014 (2014-11-14) |
| 85 | 4 | "The Genius Factor" | November 21, 2014 (2014-11-21) |
| 86 | 5 | "Secrets of the Mummies" | November 28, 2014 (2014-11-28) |
| 87 | 6 | "Alien Resurrections" | December 5, 2014 (2014-12-5) |
| 88 | 7 | "Alien Messages" | December 19, 2014 (2014-12-19) |
| 89 | 8 | "The Great Flood" | December 23, 2014 (2014-12-23) |
| 90 | 9 | "Aliens and the Civil War" | April 10, 2015 (2015-4-10) |
| 91 | 10 | "Hidden Pyramids" | April 17, 2015 (2015-4-17) |
| 92 | 11 | "The Vanishings" | April 24, 2015 (2015-4-24) |
| 93 | 12 | "The Alien Agenda" | May 1, 2015 (2015-5-1) |

### Season 10 (2015)

| No. overall | No. in season | Title | Original release date |
| 94 | 1 | "Aliens B.C." | July 24, 2015 (2015-7-24) |
| 95 | 2 | "NASA's Secret Agenda" | July 31, 2015 (2015-7-31) |
| 96 | 3 | "Aliens and Robots" | August 7, 2015 (2015-8-7) |
| 97 | 4 | "Dark Forces" | August 14, 2015 (2015-8-14) |
| 98 | 5 | "The Alien Evolution" | August 21, 2015 (2015-8-21) |
| 99 | 6 | "The Other Earth" | August 28, 2015 (2015-8-28) |
| 100 | 7 | "Creatures of the Deep" | September 4, 2015 (2015-9-04) |
| 101 | 8 | "Circles from the Sky" | September 18, 2015 (2015-9-18) |
| 102 | 9 | "The Alien Wars" | October 2, 2015 (2015-10-2) |
| 103 | 10 | "The Forbidden Zones" | October 9, 2015 (2015-10-9) |

### Season 11 (2016)

| No. overall | No. in season | Title | Original release date |
| 104 | 1 | "Pyramids of Antarctica" | May 6, 2016 (2016-5-6) |
| 105 | 2 | "Destination Mars" | May 13, 2016 (2016-5-13) |
| 106 | 3 | "The Next Humans" | May 20, 2016 (2016-5-20) |
| 107 | 4 | "The New Evidence" | May 27, 2016 (2016-5-27) |
| 108 | 5 | "The Visionaries" | June 10, 2016 (2016-6-10) |
| 109 | 6 | "Decoding the Cosmic Egg" | June 17, 2016 (2016-6-17) |
| 110 | 7 | "The Wisdom Keepers" | June 24, 2016 (2016-6-24) |
| 111 | 8 | "The Mysterious Nine" | July 8, 2016 (2016-7-8) |
| 112 | 9 | "The Hidden Empire" | July 15, 2016 (2016-7-15) |
| 113 | 10 | "The Prototypes" | July 22, 2016 (2016-7-22) |
| 114 | 11 | "Space Station Moon" | July 29, 2016 (2016-7-29) |
| 115 | 12 | "Russia's Secret Files" | August 12, 2016 (2016-8-12) |
| 116 | 13 | "Beyond Roswell" | August 19, 2016 (2016-8-19) |
| 117 | 14 | "The Returned" | August 26, 2016 (2016-8-26) |
| 118 | 15 | "Shiva the Destroyer" | September 2, 2016 (2016-9-2) |

### Season 12 (2017)

| No. overall | No. in season | Title | Original release date |
| 119 | 1 | "The Alien Hunters" | April 28, 2017 (2017-4-28) |
| 120 | 2 | "Forged by the Gods" | May 5, 2017 (2017-5-5) |
| 121 | 3 | "The Mystery of Rudloe Manor" | May 12, 2017 (2017-5-12) |
| 122 | 4 | "The Alien Architects" | May 19, 2017 (2017-5-19) |
| 123 | 5 | "The Pharaohs' Curse" | May 26, 2017 (2017-5-26) |
| 124 | 6 | "The Science Wars" | June 2, 2017 (2017-6-02) |
| 125 | 7 | "City of the Gods" | June 9, 2017 (2017-6-09) |
| 126 | 8 | "The Alien Frequency" | June 16, 2017 (2017-6-16) |
| 127 | 9 | "The Majestic Twelve" | July 7, 2017 (2017-7-7) |
| 128 | 10 | "The Akashic Record" | July 14, 2017 (2017-7-14) |
| 129 | 11 | "Voices of the Gods" | July 21, 2017 (2017-7-21) |
| 130 | 12 | "The Animal Agenda" | July 28, 2017 (2017-7-28) |
| 131 | 13 | "The Replicants" | August 4, 2017 (2017-8-4) |
| 132 | 14 | "A Spaceship Made of Stone" | August 11, 2017 (2017-8-11) |
| 133 | 15 | "The Alien Disks" | September 8, 2017 (2017-9-8) |
| 134 | 16 | "Return to Göbekli Tepe" | September 15, 2017 (2017-9-15) |

### Season 13 (2018–19)

| No. overall | No. in season | Title | Original release date |
| 135 | 1 | "The UFO Conspiracy" | April 27, 2018 (2018-4-27) |
| 136 | 2 | "Da Vinci's Forbidden Codes" | May 4, 2018 (2018-5-4) |
| 137 | 3 | "The Alien Protocols" | May 11, 2018 (2018-5-11) |
| 138 | 4 | "Earth's Black Holes" | May 18, 2018 (2018-5-18) |
| 139 | 5 | "The Desert Codes" | May 25, 2018 (2018-5-25) |
| 140 | 6 | "Area 52" | June 1, 2018 (2018-6-1) |
| 141 | 7 | "Earth Station Egypt" | July 20, 2018 (2018-7-20) |
| 142 | 8 | "Island of the Giants" | July 27, 2018 (2018-7-27) |
| 143 | 9 | "The Taken" | August 3, 2018 (2018-8-3) |
| 144 | 10 | "The Sentinels" | August 10, 2018 (2018-8-10) |
| 145 | 11 | "Russia Declassified" | August 17, 2018 (2018-8-17) |
| 146 | 12 | "They Came from the Sky" | August 24, 2018 (2018-8-24) |
| 147 | 13 | "The Artificial Human" | August 31, 2018 (2018-8-31) |
| 148 | 14 | "The Alien Phenomenon" | January 4, 2019 (2019-1-4) |
| 149 | 15 | "Return to Mars" | January 7, 2019 (2019-1-7) |

### Season 14 (2019)

| No. overall | No. in season | Title | Original release date |
| 150 | 1 | "Return to Antarctica" | May 31, 2019 (2019-5-31) |
| 151 | 2 | "The Badland's Guardian" | June 7, 2019 (2019-6-7) |
| 152 | 3 | "Element 115" | June 14, 2019 (2019-6-14) |
| 153 | 4 | "The Star Gods of Sirius" | June 21, 2019 (2019-6-21) |
| 154 | 5 | "They Came from the Sea" | June 28, 2019 (2019-6-28) |
| 155 | 6 | "Secrets of the Maya" | July 5, 2019 (2019-7-5) |
| 156 | 7 | "The Druid Connection" | July 19, 2019 (2019-7-19) |
| 157 | 8 | "The Reptilian Agenda" | July 26, 2019 (2019-7-26) |
| 158 | 9 | "The Alien Infection" | August 2, 2019 (2019-8-2) |
| 159 | 10 | "Project Hybrid" | August 9, 2019 (2019-8-9) |
| 160 | 11 | "The Trans-Dimensionals" | August 16, 2019 (2019-8-16) |
| 161 | 12 | "Islands of Fire" | August 23, 2019 (2019-8-23) |
| 162 | 13 | "The Constellation Code" | August 30, 2019 (2019-8-30) |
| 163 | 14 | "The Nuclear Agenda" | September 6, 2019 (2019-9-6) |
| 164 | 15 | "The Alien Mountain" | October 4, 2019 (2019-10-4) |
| 165 | 16 | "The Alien Brain" | October 11, 2019 (2019-10-11) |
| 166 | 17 | "The Secrets of Stonehenge" | October 18, 2019 (2019-10-18) |
| 167 | 18 | "Food of the Gods" | November 1, 2019 (2019-11-01) |
| 168 | 19 | "Human Hieroglyphs" | November 8, 2019 (2019-11-08) |
| 169 | 20 | "The Storming of Area 51" | November 15, 2019 (2019-11-15) |
| 170 | 21 | "Countdown to Disclosure" | November 22, 2019 (2019-11-22) |
| 171 | 22 | "Secrets of the Exoplanets" | November 29, 2019 (2019-11-29) |

### Season 15 (2020)

| No. overall | No. in season | Title | Original release date |
| 172 | 1 | "The Mystery of Nan Madol" | January 25, 2020 (2020-1-25) |
| 173 | 2 | "The Relics of Roswell" | February 1, 2020 (2020-2-1) |
| 174 | 3 | "Destination Chile" | February 8, 2020 (2020-2-8) |
| 175 | 4 | "The Real Men in Black" | February 15, 2020 (2020-2-15) |
| 176 | 5 | "The Mystery of the Stone Giants" | February 22, 2020 (2020-2-22) |
| 177 | 6 | "The World Before Time" | February 29, 2020 (2020-2-29) |
| 178 | 7 | "They Came from the Pleiades" | March 7, 2020 (2020-3-7) |
| 179 | 8 | "The Immortality Machine" | March 14, 2020 (2020-3-14) |
| 180 | 9 | "The Shapeshifters" | March 21, 2020 (2020-3-21) |
| 181 | 10 | "The Mystery of Skinwalker Ranch" | March 28, 2020 (2020-3-28) |
| 182 | 11 | "The Ultimate Guide to UFOs" | April 11, 2020 (2020-4-11) |
| 183 | 12 | "Aliens and the Presidents" | April 18, 2020 (2020-4-18) |

### Season 16 (2020–21)

| No. overall | No. in season | Title | Original release date | U.S. viewers (millions) |
| 184 | 1 | "The Divine Number" | November 13, 2020 (2020-11-13) | 1.14 |
| 185 | 2 | "The Lost Kingdom" | November 20, 2020 (2020-11-20) | 0.96 |
| 186 | 3 | "The Galactic Keyhole" | December 4, 2020 (2020-12-04) | 0.99 |
| 187 | 4 | "Giants of the Mediterranean" | December 11, 2020 (2020-12-11) | 0.93 |
| 188 | 5 | "The Forbidden Bible" | December 18, 2020 (2020-12-18) | 1.02 |
| 189 | 6 | "William Shatner Meets Ancient Aliens" | February 12, 2021 (2021-02-12) | 0.95 |
| 190 | 7 | "Impossible Artifacts" | February 19, 2021 (2021-02-19) | 1.00 |
| 191 | 8 | "The Space Travellers" | February 26, 2021 (2021-02-26) | 0.94 |
| 192 | 9 | "The UFO Pioneers" | March 5, 2021 (2021-03-05) | 0.91 |
| 193 | 10 | "The Harmonic Code" | March 12, 2021 (2021-03-12) | 0.83 |

### Season 17 (2021)

| No. overall | No. in season | Title | Original release date |
| 194 | 1 | "The Lost City of Peru" | August 6, 2021 (2021-08-06) |
| 195 | 2 | "Top Ten Mysterious Sites" | August 13, 2021 (2021-08-13) |
| 196 | 3 | "Top Ten Alien Cover-Ups" | August 20, 2021 (2021-08-20) |
| 197 | 4 | "The Mystery of Mount Shasta" | September 17, 2021 (2021-9-17) |
| 198 | 5 | "The Human Experiment" | September 24, 2021 (2021-9-24) |
| 199 | 6 | "Top Ten Alien Encounters" | October 1, 2021 (2021-10-01) |
| 200 | 7 | "Top Ten Alien Artifacts" | October 8, 2021 (2021-10-08) |

### Season 18 (2022)

Six episodes were broadcast as Ancient Aliens on Location. The special episodes include highlights from previously broadcast episodes as well as on-location segments.
| No. overall | No. in season | Title | Original release date |
| 201 | 1 | "The Disclosure Event" | January 7, 2022 (2022-1-07) |
| 202 | 2 | "Mystery of the Standing Stones" | January 14, 2022 (2022-1-14) |
| 203 | 3 | "Beneath the Sacred Temples" | January 21, 2022 (2022-1-21) |
| 204 | 4 | "The World on Alert" | January 28, 2022 (2022-1-28) |
| 205 | 5 | "Recovering the Ark of the Covenant" | February 11, 2022 (2022-2-11) |
| 206 | 6 | "Secrets of the Star Ancestors" | February 18, 2022 (2022-2-18) |
| 207 | 7 | "Alien Air Force" | February 25, 2022 (2022-2-25) |
| 208 | 8 | "The Shadow People" | March 4, 2022 (2022-3-04) |
| 209 | 9 | "Decoding the Dragon Gods" | March 11, 2022 (2022-3-11) |
| 210 | 10 | "The Time Benders" | March 18, 2022 (2022-3-18) |
| Ancient Aliens on Location ||||
| 211 | 11 | "Incredible Structures" | July 8, 2022 (2022-7-08) |
| 212 | 12 | "Extraordinary Encounters" | July 15, 2022 (2022-7-15) |
| 213 | 13 | "Decoding the Alien Glyphs" | July 22, 2022 (2022-7-22) |
| 214 | 14 | "The UFO Investigations" | July 29, 2022 (2022-7-29) |
| 215 | 15 | "Mysterious Artifacts" | August 5, 2022 (2022-8-5) |
| 216 | 16 | "Evidence of Alien Life" | August 12, 2022 (2022-8-12) |
| Title ||||
| 217 | 17 | "The Shining Ones" | August 19, 2022 (2022-8-19) |
| 218 | 18 | "Journey to Immortality" | August 26, 2022 (2022-8-26) |
| 219 | 19 | "Secrets of Inner Earth" | September 9, 2022 (2022-9-9) |
| 220 | 20 | "Return of the Egyptian Gods" | September 16, 2022 (2022-9-16) |

### Season 19 (2023)

| No. overall | No. in season | Title | Original release date | U.S. viewers (millions) |
| 221 | 1 | "The Hotspots Connection" | January 6, 2023 (2023-1-06) | 0.80 |
| 222 | 2 | "The Crop Circle Code" | January 13, 2023 (2023-1-13) |
| 223 | 3 | "Mystery of the Lost Civilization" | January 20, 2023 (2023-1-20) |
| 224 | 4 | "The Power of the Obelisks" | February 3, 2023 (2023-2-3) |
| 225 | 5 | "The MUFON Files" | February 10, 2023 (2023-2-10) |
| 226 | 6 | "Cosmic Impacts" | February 17, 2023 (2023-2-17) |
| 227 | 7 | "Close Encounters of the Fifth Kind" | February 24, 2023 (2023-2-24) |
| 228 | 8 | "The Mysteries of Alaska" | March 3, 2023 (2023-3-3) |
| 229 | 9 | "Aliens in our Airspace" | March 10, 2023 (2023-3-10) |
| 230 | 10 | "The Giants of Malta" | March 17, 2023 (2023-3-17) |
| 231 | 11 | "The Top Ten Pyramid Sites" | June 30, 2023 (2023-6-30) |
| 232 | 12 | "The Top Ten Mysterious Devices" | July 7, 2023 (2023-7-7) |
| 233 | 13 | "The Top Ten Mysterious Islands" | July 14, 2023 (2023-7-14) |
| 234 | 14 | "The Top Ten Alien Craft" | July 21, 2023 (2023-7-21) |
| 235 | 15 | "Edgar Cayce: The Sleeping Prophet" | August 4, 2023 (2023-8-4) |
| 236 | 16 | "The Gods of Greece" | August 11, 2023 (2023-8-11) |
| 237 | 17 | "The New UFO Hunters" | August 18, 2023 (2023-8-18) |
| 238 | 18 | "The Power of the Talisman" | August 25, 2023 (2023-8-25) |
| 239 | 19 | "The Top Ten Mysteries of the Deep" | September 8, 2023 (2023-9-8) |
| 240 | 20 | "The Top Ten Alien Petroglyphs" | September 15, 2023 (2023-9-15) |

### Season 20 (2024)

| No. overall | No. in season | Title | Original release date | U.S. viewers (millions) |
| 241 | 1 | "The Top Ten Alien Influencers" | January 5, 2024 (2024-1-5) | 0.72 |
| 242 | 2 | "The Top Ten Extraordinary Creatures" | January 12, 2024 (2024-1-12) | 0.66 |
| 243 | 3 | "The Top Ten Hidden Alien Bases" | January 19, 2024 (2024-1-19) | 0.69 |
| 244 | 4 | "The Top Ten Scariest Encounters" | February 2, 2024 (2024-2-2) | 0.73 |
| 245 | 5 | "The Top Ten Alien Codes" | February 9, 2024 (2024-2-9) | 0.70 |
| 246 | 6 | "The Top Ten Alien Disasters" | February 16, 2024 (2024-2-16) | 0.63 |
| 247 | 7 | "Secrets of the Sumerians" | February 23, 2024 (2024-2-23) | 0.82 |
| 248 | 8 | "The UFO Superhighway" | March 1, 2024 (2024-3-1) | 0.69 |
| 249 | 9 | "Mysteries of Scotland" | March 8, 2024 (2024-3-8) | ? |
| 250 | 10 | "Mystery of the Stone Spheres" | March 15, 2024 (2024-3-15) | ? |
| 251 | 11 | "Mysteries of the Maya" | June 28, 2024 (2024-6-28) | ? |
| 252 | 12 | "Unlocking the Stargates" | July 5, 2024 (2024-7-5) | ? |
| 253 | 13 | "The Whistleblowers" | July 12, 2024 (2024-7-12) | ? |
| 254 | 14 | "The Search for Extraterrestrial Intelligence" | July 19, 2024 (2024-7-19) | ? |
| 255 | 15 | "Jacques Vallée: UFO Pioneer" | August 9, 2024 (2024-8-9) | ? |
| 256 | 16 | "The Teachers" | August 16, 2024 (2024-8-16) | ? |
| 257 | 17 | "Egypt's Giant Tombs" | August 23, 2024 (2024-8-23) | ? |
| 258 | 18 | "The Linda Moulton Howe Files" | August 30, 2024 (2024-8-30) | ? |
| 259 | 19 | "The Chosen" | September 6, 2024 (2024-9-6) | ? |
| 260 | 20 | "Resurrecting Puma Punku" | September 13, 2024 (2024-9-13) | ? |

### Season 21 (2025)

| No. overall | No. in season | Title | Original release date |
| 261 | 1 | "The Top Ten Extraordinary Discoveries" | February 7, 2025 (2025-2-7) |
| 262 | 2 | "The Top Ten Mysterious Monoliths" | February 14, 2025 (2025-2-14) |
| 263 | 3 | "The Top Ten UFO Crashes" | February 21, 2025 (2025-2-21) |
| 264 | 4 | "The Top Ten Unexplained Technology" | February 28, 2025 (2025-2-28) |
| 265 | 5 | "The Top Ten Secret Projects" | March 7, 2025 (2025-3-7) |
| 266 | 6 | "The Top Ten Mysterious Mountains" | March 14, 2025 (2025-3-14) |
| 267 | 7 | "Mysteries of the Aztecs" | March 21, 2025 (2025-3-21) |

## Special episodes

Special episodes which include new footage in addition to selections from previously broadcast episodes. Availability of special episodes depends on the broadcast market and language.

### Special Edition (2014)

Ancient Aliens: Special Edition features highlights from previously broadcast episodes. The episodes include extended interviews with guests and some new effects. The episodes were originally broadcast as part of Season 8.
| No. in season | Title | Original release date |
| 1 | "Alien Transports" | June 13, 2014 (2014-6-13) |
| 2 | "Mysterious Structures" | June 20, 2014 (2014-6-20) |
| 3 | "Mysterious Devices" | June 27, 2014 (2014-6-27) |
| 4 | "Faces of the Gods" | July 25, 2014 (2014-7-25) |

### The Ultimate Evidence (2015)

Ancient Aliens: The Ultimate Evidence is a repackage of previously broadcast episodes presented by Giorgio Tsoukalos. In some markets the series was broadcast as Ancient Aliens Ultimate Evidence. The episodes are bundled with Season 9.
| No. in season | Title | Original release date |
| 1 | "Beyond Nazca" | May 15, 2015 (2015-5-15) |
| 2 | "The Monoliths" | May 22, 2015 (2015-5-22) |
| 3 | "The Tesla Experiment" | May 29, 2015 (2015-5-29) |
| 4 | "Alien Power Plants" | June 5, 2015 (2015-6-5) |
| 5 | "The Mystery of Puma Punku" | June 12, 2015 (2015-6-12) |
| 6 | "Alien Messages" | June 19, 2015 (2015-6-19) |
| 7 | "Aliens and the Lost Ark" | June 26, 2015 (2015-6-26) |
| 8 | "Aliens and the Creation of Man" | July 3, 2015 (2015-7-3) |

### Special Presentation (2022–2024)

Ancient Aliens: Special Presentation features highlights from previously broadcast episodes in a 90-minute format. Many segments from older episodes are presented in high-definition for the first time, in addition to new interview footage and special effects.

#### Season 1 (2022–23)

| No. overall | No. in season | Title | Original release date |
| 1 | 1 | "Aliens and Human Evolution" | September 26, 2022 (2022-9-26) |
| 2 | 2 | "Aliens and Strange Creatures" | October 3, 2022 (2022-10-3) |
| 3 | 3 | "Aliens and Unexplained Engineering" | October 10, 2022 (2022-10-10) |
| 4 | 4 | "Aliens and Lost Civilizations" | October 17, 2022 (2022-10-17) |
| 5 | 5 | "Aliens and the United States" | October 24, 2022 (2022-10-24) |
| 6 | 6 | "Mysteries of the Outer Realms" | October 31, 2022 (2022-10-31) |
| 7 | 7 | "Alien Codes and Messages" | November 7, 2022 (2022-11-7) |
| 8 | 8 | "Energy Lines and Hot Spots" | November 21, 2022 (2022-11-21) |
| 9 | 9 | "Aliens and the Superhuman Mind" | November 28, 2022 (2022-11-28) |
| 10 | 10 | "Gone without a Trace" | December 12, 2022 (2022-12-12) |
| 11 | 11 | "Mission to Outer Space" | December 19, 2022 (2022-12-19) |
| 12 | 12 | "The Global Connection" | December 26, 2022 (2022-12-26) |
| 13 | 13 | "Strange Visitors" | January 2, 2023 (2023-1-2) |

#### Season 2 (2023–24)

| No. overall | No. in season | Title | Original release date |
| 14 | 1 | "Unidentified Aerial Phenomena" | October 2, 2023 (2023-10-02) |
| 15 | 2 | "Extraterrestrial Informants" | October 9, 2023 (2023-10-9) |
| 16 | 3 | "Interstellar Fallout" | October 16, 2023 (2023-10-16) |
| 17 | 4 | "Extraterrestrial Close Encounters" | October 23, 2023 (2023-10-23) |
| 18 | 5 | "Aliens and the Buried Past" | October 30, 2023 (2023-10-30) |
| 19 | 6 | "Mysteries Beneath the Ice" | November 13, 2023 (2023-11-13) |
| 20 | 7 | "Alien Outposts" | November 27, 2023 (2023-11-27) |
| 21 | 8 | "Aliens and Mysterious Texts" | December 4, 2023 (2023-12-4) |
| 22 | 9 | "Aliens and World Leaders" | December 11, 2023 (2023-12-11) |
| 23 | 10 | "Alien Effigies" | December 18, 2023 (2023-12-18) |
| 24 | 11 | "Extraterrestrial Pyramids" | January 1, 2024 (2024-1-1) |
| 25 | 12 | "Aliens and the Unseen" | January 18, 2024 (2024-1-18) |

### Origins (2024–25)

Ancient Aliens: Origins is a repackage of previously broadcast episodes in a 90-minute format, in addition to new on-location segments and interviews. The series is similar to Ancient Aliens: Special Presentation.
| No. in season | Title | Original release date |
| 1 | "Extraordinary Engineering" | October 7, 2024 (2024-10-7) |
| 2 | "Unidentified Flying Objects" | October 14, 2024 (2024-10-14) |
| 3 | "Sky Gods And Star Beings" | October 21, 2024 (2024-10-21) |
| 4 | "Human Genesis" | October 28, 2024 (2024-10-28) |
| 5 | "Mysterious Underground Worlds" | November 4, 2024 (2024-11-4) |
| 6 | "Alien Arsenal" | November 18, 2024 (2024-11-18) |
| 7 | "Mystery of the Pyramids" | November 25, 2024 (2024-11-25) |
| 8 | "Alien Observatories" | December 2, 2024 (2024-12-2) |
| 9 | "Extraterrestrial Devices" | December 9, 2024 (2024-12-9) |
| 10 | "Submerged Evidence Airs" | December 16, 2024 (2024-12-16) |
| 11 | "Alien Beacons" | December 30, 2024 (2024-12-30) |
| 12 | "Alien Messengers" | January 5, 2025 (2025-1-5) |
| 13 | "Strange Underground Structures" | January 25, 2025 (2025-1-25) |