As of July 2026, Stargate Atlantis Season 4 aired in 2007 with 20 episodes — streaming now on Amazon Prime Video. Full episode guide and where to watch below.

Stargate Atlantis Season 4 poster

← Back to Stargate Atlantis

Stargate Atlantis Season 4

2007 20 Episodes Sci-Fi & Fantasy · Action & Adventure ⭐ 8/10

Right now you can watch Stargate Atlantis Season 4 on and — and it goes further with its ideas than most genre entertainment bothers to. The 1-season run is exactly the right length for what it is doing. 1,191 people have weighed in on TMDB, and the verdict leans heavily positive. Watch it for Joe Flanigan — the performance elevates material that could easily tip into self-seriousness. There is no real reason to keep putting it off.

Part of the current wave of titles people are actually watching, Stargate Atlantis Season 4 earns its spot. The world-building is meticulous, but it is the characters who carry Stargate Atlantis Season 4 through its more ambitious moments. With changes in leadership and new allies, the team continues to battle the Wraith and confront new existential threats. Personal dynamics shift as members struggle with loss and make significant choices that shape the fate of Atlantis and its mission in the Pegasus Galaxy. Joe Flanigan and David Hewlett lead a cast that brings real weight to the material. It was aired in 2007. The rules of Stargate Atlantis Season 4's world are consistent enough that the big swings never feel like cheating. The hit rate here is high enough that skipping ahead never feels like an option.

For late-night viewing or a proper weekend binge, Stargate Atlantis Season 4 fits the bill. If you have run out of similar titles to watch, this is a strong next pick. Best experienced as a single, sustained watch if your schedule allows. Joe Flanigan anchors it with a performance that makes the more abstract moments feel personal. If you have been burned by ambitious sci-fi before, this is the exception.

📡 Where to Watch Stargate Atlantis Season 4

🇺🇸 United States

Amazon Prime Video

Amazon Prime Video with Ads

🇬🇧 United Kingdom

MGM Plus Amazon Channel

🇨🇦 Canada

MGM Amazon Channel

🎬 Stargate Atlantis Season 4 — Episode Guide

Floating in deep space with the city's protective shield failing, the team must do all they can to keep Atlantis alive. A radical injury threatens Dr. Weir's life.

Colonel Sheppard and his team embark on a risky mission to steal a Z.P.M. power module from the Replicators -- but must rely on a compromised Dr. Weir to succeed.

When a group of Ronon's people enlist the team's help in raiding a Wraith weapons facility, Ronon reconsiders whether his future lies in Atlantis or with his friends.

During an off-world mission Colonel Sheppard unknowingly becomes host to an alien entity, which infects others in Atlantis and afflicts them with terrifying nightmares.

Colonel Sheppard is captured by the inhabitants of a generational ship and their beautiful leader, who wish to use his ability to use Ancient technology for their own ends.

When a virus causes amnesia in everyone except Teyla and Ronon, the Atlantis team must work together to find a cure before their memories fade entirely.

During a visit to New Athos, Teyla and Dr. Keller find themselves on the run from a primitive tribe of warriors.

The team meets a man with extraordinary prophetic abilities, who gives them a dark prediction about Atlantis's future. The Wraith seek a new alliance with Atlantis in their war with the Replicators.

Miller's Crossing

Rodney McKay goes in search of his sister on Earth after she is kidnapped by the head of a powerful corporation.

This Mortal Coil (1)

A mysterious drone crashes into Atlantis, indicating that the Replicators may have found the city. But when Elizabeth Weir appears, the team realizes that the probe is just a part of a bigger mystery.

Be All My Sins Remember'd (2)

With a plan to potentially extinguish the Replicator threat, the Atlantis team must seek an alliance with a fleet of Wraith ships.

The team finds their former Wraith ally's hive ship drifting in space, which leads them to a secret project that could turn the tide of a civil war.

An automated lockdown traps Atlantis personnel in various parts of the city, each of them hoping the others will come to their rescue.

Colonel Sheppard and Dr. McKay must protect a child princess on a pilgrimage before she can become queen, and learn that she has dangerous enemies threatening her life.

While on personal leave on Earth, Sheppard and Ronon learn that scientists have engineered a human-form Replicator -- who is now on the loose.

McKay, Carter, and Keller are trapped in an underground chamber while on an off-world mission, with no apparent means of escape.

Teal'c visits Atlantis to counsel a headstrong Ronon, who is up for review by the I.O.A. But the two must work together when the Wraith invade the Midway space station in order to reach Earth.

The Kindred (1)

As a mysterious new illness sweeps through the Pegasus Galaxy, Teyla is convinced by a vision that the father of her child is trying to communicate with her.

The Kindred (2)

The team is shocked when an old friend, believed to be dead, miraculously returns to them. Teyla plans an escape from Michael's captivity.

The Last Man (1)

Sheppard returns to Atlantis after a mission and finds the city abandoned, all systems dead -- and instead of ocean, sand dunes as far as the eye can see.

🎭 Cast of Stargate Atlantis Season 4

Joe Flanigan

David Hewlett

Rachel Luttrell

Rachel Luttrell

Amanda Tapping

Samantha Carter

Jason Momoa

📋 All Seasons of Stargate Atlantis

Season 1 Season 2 Season 3 Season 5

Never Lose Track of Stargate Atlantis

TV Butler Pro lets you search every streaming service in seconds, tracks what you've watched, and works completely free. No app download needed.

🎩 Try TV Butler Pro Free