| Title | Season Episode | Airdate | Stardate | Year | Rating | |
| Affliction | 4 x 15 | 91 | 18 Feb 2005 | Unknown | 2154 |  |
| Awakening | 4 x 08 | 84 | 26 Nov 2004 | Unknown | 2154 |  |
| Babel One | 4 x 12 | 88 | 28 Jan 2005 | Unknown | 2154 | |
| Borderland | 4 x 04 | 80 | 29 Oct 2004 | 17 May 2154 | 2154 |  |
| Bound | 4 x 17 | 93 | 15 Apr 2005 | 27 Dec 2154 | 2154 | |
| Cold Station 12 | 4 x 05 | 81 | 5 Nov 2004 | Unknown | 2154 | |
| Daedalus | 4 x 10 | 86 | 14 Jan 2005 | Unknown | 2154 |  |
| Demons | 4 x 20 | 96 | 6 May 2005 | 19th Jan 2155 | 2155 | |
| Divergence | 4 x 16 | 92 | 25 Feb 2005 | Unknown | 2154 | |
| Home | 4 x 03 | 79 | 22 Oct 2004 | Unknown | 2154 | |
| In A Mirror, Darkly | 4 x 18 | 94 | 22 Apr 2005 | 13 Jan 2155 | 2155 |  |
| In A Mirror, Darkly, Part 2 | 4 x 19 | 95 | 29 Apr 2005 | 18 Jan 2155 | 2155 | |
| Kir'Shara | 4 x 09 | 85 | 3 Dec 2004 | Unknown | 2154 | |
| Observer Effect | 4 x 11 | 87 | 21 Jan 2005 | Unknown | 2154 | |
| Storm Front, Part 1 | 4 x 01 | 77 | 8 Oct 2004 | 1944 | 2154 | |
| Storm Front, Part 2 | 4 x 02 | 78 | 15 Oct 2004 | 1944 | 2154 | |
| Terra Prime | 4 x 21 | 97 | 13 May 2005 | Unknown | 2155 | |
| The Aenar | 4 x 14 | 90 | 11 Feb 2005 | Unknown | 2154 | |
| The Augments | 4 x 06 | 82 | 12 Nov 2004 | 27 May 2154 | 2154 | |
| The Forge | 4 x 07 | 83 | 19 Nov 2004 | Unknown | 2154 | |
| These Are The Voyages... | 4 x 22 | 98 | 13 May 2005 | Unknown | 2370 |  |
| United | 4 x 13 | 89 | 4 Feb 2005 | Unknown | 2154 | |
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