As of July 2026, Lost in Space is a Sci-Fi & Fantasy series that aired since 1965 with 3 seasons. Find out where to watch it below.
Lost in Space poster

Lost in Space

1965–1968 3 Seasons 83 Episodes Sci-Fi & Fantasy TV-PG ⭐ 7 / 10

Lost in Space has quietly become one of the more dependable comedies currently available. 3 seasons in, and the quality has not slipped. 130 people have weighed in on TMDB, and the verdict leans heavily positive. Guy Williams's performance alone is worth the time investment. There is no real reason to keep putting it off.

Lost in Space is not trying to be everything to everyone, and that focus is exactly what makes it work. Sharp writing and a well-matched ensemble are what separate Lost in Space from the crowd. The space family Robinson is sent on a five-year mission to find a new planet to colonise. The voyage is sabotaged time and again by an inept stowaway, Dr. Zachary Smith. Guy Williams and June Lockhart lead a cast that never overplays a joke. Across 3 seasons (1965–1968), it never lost the thread that made it worth starting. The real test of any comedy is whether it is still funny once you know all the jokes, and Lost in Space holds up on rewatch in a way that separates it from one-off curiosities. There is real craft here, even in the moments that do not fully land.

Lost in Space is the kind of thing you put on in the background and end up fully watching. If you have already watched Futurama, Lost in Space is a natural next step. It is a manageable watch, easy to fit into a single week. Guy Williams's comic timing carries it through its weaker moments. The kind of comedy you recommend to someone who claims they do not watch much.

Lost in Space wrapped up in 1968, created by Irwin Allen — and 3 seasons are available to watch from start to finish. Find exactly where it's streaming below, and TV Butler Pro makes it effortless to track your progress as you go. Just search the name, and Butler finds it instantly, tells you which service has it, and remembers exactly where you left off.

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📺 Where to Watch Lost in Space

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🎭 Cast of Lost in Space

Guy Williams
Guy Williams
Dr. John Robinson
June Lockhart
June Lockhart
Dr. Maureen Robinson
Mark Goddard
Mark Goddard
Major Don West
Marta Kristen
Marta Kristen
Judy Robinson
Angela Cartwright
Angela Cartwright
Penny Robinson
Bill Mumy
Bill Mumy
Will Robinson
Jonathan Harris
Jonathan Harris
Dr. Zachary Smith
Dick Tufeld
Dick Tufeld
Robot B-9

🗂️ All Seasons of Lost in Space

1
Season 1
29 Episodes · 1965
2
Season 2
30 Episodes · 1966
3
Season 3
24 Episodes · 1967

📋 If You Like Lost in Space, Try These

Futurama
1999
Wander Over Yonder
2013
Mork & Mindy
1978
Star Trek: Prodigy
2021
ALF
1986
Red Dwarf
1988

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