As of July 2026, Stargate Atlantis Season 1 aired in 2004 with 20 episodes — streaming now on Amazon Prime Video. Full episode guide and where to watch below.
Stargate Atlantis Season 1 poster
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Stargate Atlantis Season 1

2004 20 Episodes Sci-Fi & Fantasy · Action & Adventure ⭐ 8/10

Stargate Atlantis Season 1 has built a real following on and among viewers who want their sci-fi to think as hard as it looks. A compact run that never overstays its welcome. 1,191 people have weighed in on TMDB, and the verdict leans heavily positive. Joe Flanigan leads a cast that never lets the concept overwhelm the characters. There is no real reason to keep putting it off.

There is a reason Stargate Atlantis Season 1 keeps coming up in conversation. Stargate Atlantis Season 1 uses its genre premise as cover for asking bigger questions. The Atlantis expedition team, led by Dr. Elizabeth Weir, arrives in the Pegasus Galaxy and discovers the lost city of Atlantis. They encounter a powerful new enemy, the Wraith, and face various challenges to protect their new home while exploring the galaxy and seeking new allies. Joe Flanigan and David Hewlett lead a cast that brings real weight to the material. It was aired in 2004. The world-building is meticulous enough to sustain multiple rewatches, with details early on that only make sense later. The consistency throughout is what elevates it — not every moment is the best, but none of them are a reason to stop watching.

Viewers burned by ambitious sci-fi that could not sustain its premise should give Stargate Atlantis Season 1 a chance. It has built its own audience without needing a direct comparison. A contained run means every episode is doing real work. Joe Flanigan's performance is the anchor the more ambitious moments need. The world-building pays off in ways you will not anticipate on a first watch.

📡 Where to Watch Stargate Atlantis Season 1

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🇬🇧 United Kingdom
🇨🇦 Canada
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🎬 Stargate Atlantis Season 1 — Episode Guide

E1
Rising (1)
2004-07-15
A new Stargate team embarks on a dangerous mission to a distant galaxy, where they discover a mythical lost city -- and a deadly new enemy.
E2
Rising (2)
2004-07-15
Sheppard tries to convince Weir to mount a rescue mission to free Colonel Sumner, Teyla, and the others captured by the Wraith.
E3
Hide and Seek
2004-07-23
The Atlantis base is threatened when the team discovers that an alien entity is in the city. McKay's experiment with alien technology goes awry.
E4
Thirty Eight Minutes
2004-07-30
The team finds themselves in mortal danger when their Puddle Jumper ship becomes lodged in the Stargate.
E5
Suspicion
2004-08-06
After a series of run-ins with the Wraith, the team begins to suspect their Athosian allies of having a spy in their midst.
E6
Childhood's End
2004-08-13
Sheppard and the team visit a world where no one is over 24 years old -- because of a ritual suicide practice they believe keeps the Wraith at bay.
E7
Poisoning the Well
2004-08-20
The team finds a world whose people are on the brink of a discovery that may make them immune to the Wraith feeding.
E8
Underground
2004-08-27
Efforts to open trade relations with a species called the Genii turn sour when the team discovers their new "allies" have ulterior motives.
E9
Home
2004-09-10
McKay's efforts to harness the energy of an alien planet's atmosphere allows for a return trip to Earth -- but the team may not be able to return to Atlantis.
E10
The Storm (1)
2004-09-17
When a massive storm threatens the city, Atlantis is evacuated, only to be taken over by the team's newest enemy.
E11
The Eye (2)
2004-11-08
Major Sheppard plays a dangerous game of cat and mouse with soldiers who have seized control of Atlantis and taken Weir and McKay hostage.
E12
The Defiant One
2004-11-15
Sheppard's team investigates a downed Wraith ship, and find themselves stuck on a planet with a lone Wraith survivor.
E13
Hot Zone
2004-11-22
Nearly a third of Atlantis's residents are infected with a deadly virus that causes hallucinations and death, forcing a lockdown of the city.
E14
Sanctuary
2004-11-29
The team finds a paradise world that would make an ideal sanctuary for those fleeing from the Wraith, but the local inhabitants believe their goddess will not permit it.
E15
Before I Sleep
2004-12-06
A woman is found in suspended animation in Atlantis, and the team is shocked to see that it is Dr. Weir herself, who tells them of her trip 10,000 years into the city's past.
E16
The Brotherhood
2005-01-03
The team searches for a valuable Zero Point Module rumored to be hidden on the planet Dagan. But their new allies have motives of their own.
E17
Letters From Pegasus
2005-01-10
Given a brief opportunity to send a data transmission to Earth, members of the Atlantis expedition compose video messages home to their loved ones.
E18
The Gift
2005-01-17
Plagued by terrifying nightmares, Teyla begins to recall a time when she and her father were captured by the Wraith and subjected to disturbing experiments.
E19
The Siege (1)
2005-01-24
With a group of Wraith hive ships on the way to Atlantis, the team searches for a place to flee and a way to destroy the city. McKay leads a team to try and activate the Ancients' orbital weapons platform.
E20
The Siege (2)
2005-01-31
All hope seems lost, until Colonel Everett arrives suddenly from Earth. He is determined to defend the city until the arrival of a ZPM, brought by a new ship.

🎭 Cast of Stargate Atlantis Season 1

Joe Flanigan
Joe Flanigan
John Sheppard
David Hewlett
David Hewlett
Rodney McKay
Rachel Luttrell
Rachel Luttrell
Teyla Emmagan
Torri Higginson
Torri Higginson
Elizabeth Weir
Rainbow Sun Francks
Rainbow Sun Francks
Aiden Ford

📋 All Seasons of Stargate Atlantis

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