Season 3 title card
The third season of Lost in Space consisted of 24 episodes (the shortest season of all) and aired from September 6, 1967 through March 6, 1968. The episodes were aired wildly out of production order, as evidenced by Penny's fluctuating hair length and whether or not the Jupiter 2 was on a planet each week.
Season 3 episodes[]
| Title | Episode | Prodno. | Original Airdate |
| Condemned of Space | 3x01 / 60 of 83 | 1501 | September 6, 1967 |
| Hunter's Moon | 3x02 / 61 of 83 | 1502 | September 27, 1967 |
| The Space Primevals | 3x03 / 62 of 83 | 1503 | October 4, 1967 |
| Deadliest of the Species | 3x04 / 63 of 83 | 1504 | November 22, 1967 |
| Visit to a Hostile Planet | 3x05 / 64 of 83 | 1505 | September 13, 1967 |
| Kidnapped in Space | 3x06 / 65 of 83 | 1506 | September 20, 1967 |
| Flight Into the Future | 3x07 / 66 of 83 | 1507 | October 25, 1967 |
| Space Destructors | 3x08 / 67 of 83 | 1508 | October 11, 1967 |
| The Haunted Lighthouse | 3x09 / 68 of 83 | 1509 | October 18, 1967 |
| Collision of Planets | 3x10 / 69 of 83 | 1510 | November 8, 1967 |
| Space Creature | 3x11 / 70 of 83 | 1511 | November 15, 1967 |
| The Anti-Matter Man | 3x12 / 71 of 83 | 1512 | December 27, 1967 |
| Castles in Space | 3x13 / 72 of 83 | 1513 | December 20, 1967 |
| A Day at the Zoo | 3x14 / 73 of 83 | 1514 | November 29, 1967 |
| Two Weeks in Space | 3x15 / 74 of 83 | 1515 | December 13, 1967 |
| Target Earth | 3x16 / 75 of 83 | 1516 | January 3, 1968 |
| The Flaming Planet | 3x17 / 76 of 83 | 1517 | February 21, 1968 |
| Time Merchant | 3x18 / 77 of 83 | 1518 | January 17, 1968 |
| Princess of Space | 3x19 / 78 of 83 | 1519 | January 10, 1968 |
| The Promised Planet | 3x20 / 79 of 83 | 1520 | January 24, 1968 |
| The Great Vegetable Rebellion | 3x21 / 80 of 83 | 1521 | February 28, 1968 |
| Fugitives in Space | 3x22 / 81 of 83 | 1522 | January 31, 1968 |
| Space Beauty | 3x23 / 82 of 83 | 1523 | February 14, 1968 |
| Junkyard in Space | 3x24 / 83 of 83 | 1524 | March 6, 1968 |
The Special Effects crew preparing a miniature set.
Resetting the miniature set for another Jupiter 2 landing shot.
Background information[]
- While the action in seasons one and two usually took place on the surface of a planet, many of this season's adventures took place in space.
- The opening sequence was changed, as well as the theme music, composed by John Williams.
- A small spaceship named the Space Pod was introduced this season.
- Filming of some special effects shots took place over the broadcast break between seasons 2 and 3 as evidenced by these photos of the crew preparing a shot of the Jupiter 2 miniature landing on yet another desert planet.
- A scrapped story was to have had the Robinsons meet a character played by James Darren who related his story via flashback. This was instead turned into a short pilot for The Man from the 25th Century.