Stargate Atlantis Episode Count Comparison
How many Stargate Atlantis episodes per season? Compare all 5 season counts plus the 100 total, with 20 episodes each year from 2004 to 2009, using Syfy guides.
Visual comparison
All values
Click any row to load it as Entry A.
| Name | Value | Context | Source |
|---|---|---|---|
| Full series episodes Top here at 100 episodes. | 100 episodes | Full Syfy run, 2004 to 2009 | Syfy episode guide: Stargate Atlantis 100 episodes total |
| Season 1 episodes 20 episodes. Opener year. | 20 episodes | Season 1, 2004 to 2005 | Syfy guide: Season 1 20 episodes |
| Season 2 episodes 20 episodes. | 20 episodes | Season 2, 2005 to 2006 | Syfy guide: Season 2 20 episodes |
| Season 3 episodes 20 episodes. | 20 episodes | Season 3, 2006 to 2007 | Syfy guide: Season 3 20 episodes |
| Season 4 episodes 20 episodes. | 20 episodes | Season 4, 2007 to 2008 | Syfy guide: Season 4 20 episodes |
| Season 5 episodes Final season at 20. | 20 episodes | Season 5, 2008 to 2009 | Syfy guide: Season 5 20 episodes |
About this converter
Stargate Atlantis ran 100 episodes on Syfy from 2004 to 2009. Every season holds 20 episodes with no breaks in pattern. That flat order matches SG-1 era cable standards. The full 100 equals 5 season orders exactly. Each year covers a Pegasus galaxy arc for Sheppard team. The finale aired January 9 2009. SG-1 crossovers stay in their own totals. All values are Syfy broadcast counts. The steady 20 per year never changed. The full 100 equals 5 season orders exactly. Any season equals any other season in this table. The Wraith arc lives inside normal season totals.
How to use it
Pick two entries and a unit in the top row. The three boxes below stay linked. Change any box and the other two update. One box holds a count of the first entry, one holds the matching count of the second, one holds total episodes. Try the full series against the shortest season.
Syfy used a fixed 20 episode order each year, so the flat pattern is correct. The Rising pilot counts as listed in season 1 totals used here. No webisodes enter the rows. Only Syfy broadcast season episodes are counted. SG-1 stays separate and never enters these rows. The Siege parts live inside season totals. Crossover episodes stay in their own series totals and do not double count here.
FAQ
How many Atlantis episodes exist?
100 episodes across 5 seasons on Syfy.
Did any season differ?
No. All 5 seasons hold 20 episodes each.
Is SG-1 included?
No. Only Atlantis season episodes are counted.
When did Atlantis end?
Season 5 aired in 2008 to 2009 with 20 episodes.
Sources
- Syfy official Stargate Atlantis episode guide (total 100, seasons 1 to 3 at 20 each)
- Syfy episode guide (season 4 20, season 5 20)
Last verified: 2026-10-09 · 6 entries
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