The BEST episodes of Lost in Space season 3

Every episode of Lost in Space season 3, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Lost in Space season 3!

A space colony family struggles to survive when a spy/accidental stowaway throws their ship hopelessly off course.

Last Updated: 12/1/2024Network: CBSStatus: Ended
The Anti-Matter Man
star
8.08
24 votes

#1 - The Anti-Matter Man

Season 3 - Episode 15 - Aired 12/27/1967

Will and the robot try to rescue the kidnapped Prof. Robinson in a macabre world of orange grass, polka-dotted leaves, and animated rocks.

Directors: Sutton Roley
Watch Now:AmazonApple TV
Space Creature
star
7.73
33 votes

#2 - Space Creature

Season 3 - Episode 10 - Aired 11/15/1967

A blue mist causes the travelers to disappear one by one until only Will is left.

Directors: Sobey Martin
Watch Now:AmazonApple TV
Target Earth
star
7.56
36 votes

#3 - Target Earth

Season 3 - Episode 16 - Aired 1/3/1968

Will tries to brew dissension among shapeless aliens who plan to conquer Earth.

Directors: Nathan Juran
Writer: Peter Packer
Watch Now:AmazonApple TV
Visit to a Hostile Planet
star
7.44
43 votes

#4 - Visit to a Hostile Planet

Season 3 - Episode 2 - Aired 9/13/1967

A time warp transports the travelers to a hostile planet – Earth as it was in 1947.

Directors: Sobey Martin
Writer: Peter Packer
Watch Now:AmazonApple TV
Condemned of Space
star
7.39
41 votes

#5 - Condemned of Space

Season 3 - Episode 1 - Aired 9/6/1967

The Robinsons board a computer-controlled spacecraft filled with frozen men.

Directors: Nathan Juran
Writer: Peter Packer
Watch Now:AmazonApple TV
Flight into the Future
star
7.38
40 votes

#6 - Flight into the Future

Season 3 - Episode 8 - Aired 10/25/1967

The space adventurers search for reality in a world of fantastic illusions.

Directors: Sobey Martin
Writer: Peter Packer
Watch Now:AmazonApple TV
Hunter's Moon
star
7.30
27 votes

#7 - Hunter's Moon

Season 3 - Episode 4 - Aired 9/27/1967

John is captured by a maniacal humanoid and made the quarry in a sadistic big-game hunt.

Directors: Don Richardson
Writer: Jack Turley
Watch Now:AmazonApple TV
Time Merchant
star
7.26
38 votes

#8 - Time Merchant

Season 3 - Episode 18 - Aired 1/17/1968

Smith tricks a time merchant into returning him to Earth in a process that endangers the Robinsons’ lives.

Directors: Ezra Stone
Watch Now:AmazonApple TV
The Flaming Planet
star
7.26
35 votes

#9 - The Flaming Planet

Season 3 - Episode 22 - Aired 2/21/1968

The Robinsons must contend with a rapidly growing plant and missiles fired by aliens.

Directors: Don Richardson
Watch Now:AmazonApple TV
The Space Primevals
star
7.24
37 votes

#10 - The Space Primevals

Season 3 - Episode 5 - Aired 10/4/1967

In an attempt to rescue Don and Smith, the Robinsons pit their robot against a computer that rules a race of primitive aliens.

Directors: Nathan Juran
Writer: Peter Packer
Watch Now:AmazonApple TV
Collision of Planets
star
7.17
29 votes

#11 - Collision of Planets

Season 3 - Episode 9 - Aired 11/8/1967

The Robinson's come across a group of space hippies who are trying to destroy the planet the Robinson's currently inhabit.

Directors: Don Richardson
Writer: Peter Packer
Watch Now:AmazonApple TV
The Promised Planet
star
7.17
30 votes

#12 - The Promised Planet

Season 3 - Episode 19 - Aired 1/24/1968

The Robinsons get a reception on a planet populated by music-loving teenagers.

Directors: Ezra Stone
Writer: Peter Packer
Watch Now:AmazonApple TV
Fugitives in Space
star
7.12
32 votes

#13 - Fugitives in Space

Season 3 - Episode 20 - Aired 1/31/1968

Don and Smith are convicted on a false charge and sentenced to the toughest prison planet in the galaxy.

Directors: Ezra Stone
Watch Now:AmazonApple TV
Deadliest of the Species
star
7.10
31 votes

#14 - Deadliest of the Species

Season 3 - Episode 11 - Aired 11/22/1967

The Robinsons’ robot flips over a mechanical beauty programmed for pure evil. Robot: Bob May.

Directors: Sobey Martin
Watch Now:AmazonApple TV
Kidnapped in Space
star
6.97
30 votes

#15 - Kidnapped in Space

Season 3 - Episode 3 - Aired 9/20/1967

Mechanical men threaten the travelers with death unless someone can fix their robot leader.

Directors: Don Richardson
Watch Now:AmazonApple TV
Space Beauty
star
6.90
30 votes

#16 - Space Beauty

Season 3 - Episode 21 - Aired 2/14/1968

Trouble begins when Dr. Smith tricks Judy into entering an enigmatic dictator’s beauty contest.

Directors: Irving J. Moore
Watch Now:AmazonApple TV
Junkyard in Space
star
6.90
40 votes

#17 - Junkyard in Space

Season 3 - Episode 24 - Aired 3/6/1968

A galactic junkman threatens to melt down the Jupiter 2 and cannibalize the Robot.

Directors: Ezra Stone
Watch Now:AmazonApple TV
Space Destructors
star
6.89
36 votes

#18 - Space Destructors

Season 3 - Episode 6 - Aired 10/11/1967

Dr Smith activates a robot-manufacturing machine that turns out an army of obedient automatons.

Directors: Don Richardson
Watch Now:AmazonApple TV
Two Weeks in Space
star
6.83
24 votes

#19 - Two Weeks in Space

Season 3 - Episode 13 - Aired 12/13/1967

Smith turns the Jupiter 2 into a hotel for humanoids, unaware that they are fugitives from space justice.

Directors: Don Richardson
Watch Now:AmazonApple TV
The Haunted Lighthouse
star
6.78
32 votes

#20 - The Haunted Lighthouse

Season 3 - Episode 7 - Aired 10/18/1967

The Robinsons are endangered by a youngster who has put himself in control of their imaginations.

Directors: Sobey Martin
Watch Now:AmazonApple TV
The Great Vegetable Rebellion
star
6.78
36 votes

#21 - The Great Vegetable Rebellion

Season 3 - Episode 23 - Aired 2/28/1968

The Robinsons land on a planet where plants talk and seek revenge against the animal world.

Directors: Don Richardson
Writer: Peter Packer
Watch Now:AmazonApple TV
A Day at the Zoo
star
6.77
26 votes

#22 - A Day at the Zoo

Season 3 - Episode 12 - Aired 11/29/1967

The space travelers try desperately to end a day at the zoo in which they have become specimens.

Directors: Irving J. Moore
Watch Now:AmazonApple TV
Princess of Space
star
6.50
26 votes

#23 - Princess of Space

Season 3 - Episode 17 - Aired 1/10/1968

Penny agrees to impersonate a long-lost princess to help quash a computer uprising.

Directors: Don Richardson
Watch Now:AmazonApple TV
Castles in Space
star
6.43
21 votes

#24 - Castles in Space

Season 3 - Episode 14 - Aired 12/20/1967

A bandit threatens to hold Will until the Robinsons hand over a defrosted ice princess.

Directors: Sobey Martin
Writer: Peter Packer
Watch Now:AmazonApple TV