Lost Episode Ratings Heatmap
2004 · 5 Seasons · 101 Episodes · Overall Score: 8.2/10 (24 rated)
Season 1 holds the highest collective average score across the series.
Season 1 Details →Lowest score variance (σ = 0.33), maintaining an average of 8.2.
Complete Episode Rating Matrix
Interactive score chart by season and episode number. Darker green indicates higher ratings; amber and red denote lower reception.
| Episode | Season 1 | Season 2 | Season 3 | Season 4 | Season 5 |
|---|---|---|---|---|---|
| Ep 1 | 8.6 | – | – | – | – |
| Ep 2 | 8.7 | – | – | – | – |
| Ep 3 | 8.0 | – | – | – | – |
| Ep 4 | 8.5 | – | – | – | – |
| Ep 5 | 8.0 | – | – | – | – |
| Ep 6 | 7.9 | – | – | – | – |
| Ep 7 | 8.0 | – | – | – | – |
| Ep 8 | 8.1 | – | – | – | – |
| Ep 9 | 8.2 | – | – | – | – |
| Ep 10 | 8.1 | – | – | – | – |
| Ep 11 | 8.4 | – | – | – | – |
| Ep 12 | 7.7 | – | – | – | – |
| Ep 13 | 7.9 | – | – | – | – |
| Ep 14 | 7.7 | – | – | – | – |
| Ep 15 | 8.0 | – | – | – | – |
| Ep 16 | 8.3 | – | – | – | – |
| Ep 17 | 8.1 | – | – | – | – |
| Ep 18 | 8.5 | – | – | – | – |
| Ep 19 | 8.8 | – | – | – | – |
| Ep 20 | 8.4 | – | – | – | – |
| Ep 21 | 8.0 | – | – | – | – |
| Ep 22 | 7.8 | – | – | – | – |
| Ep 23 | 8.5 | – | – | – | – |
| Ep 24 | 8.8 | – | – | – | – |
| Season Avg | 8.2 | – | – | – | – |
Ratings Analysis & Trajectory
Across 5 seasons and 101 episodes, Lost has earned an overall series rating of 8.2 out of 10. The series displays remarkable consistency across its narrative arc, maintaining reliable ratings from premiere to conclusion.
The single highest-rated hour of television in the series is Season 1, Episode 19 ("Deus Ex Machina"), rated at an extraordinary 8.8/10 with 76 ratings. Conversely, the lowest-rated installment is Season 1, Episode 14 ("Special"), landing at 7.7/10.
The most precipitous single-episode shift occurred in Season 1 between Episode 2 ("Pilot (2)", 8.7) and Episode 3 ("Tabula Rasa", 8), a swing of 0.7 points.
Top 10 Highest Rated Episodes of Lost
| Rank | Episode | Title | Score | Votes | Air Date |
|---|---|---|---|---|---|
| #1 | Season 1, Ep 19 | Deus Ex Machina | 8.8 | 76 | Mar 30, 2005 |
| #2 | Season 1, Ep 24 | Exodus (2) | 8.8 | 73 | May 25, 2005 |
| #3 | Season 1, Ep 2 | Pilot (2) | 8.7 | 94 | Sep 29, 2004 |
| #4 | Season 1, Ep 1 | Pilot (1) | 8.6 | 113 | Sep 22, 2004 |
| #5 | Season 1, Ep 4 | Walkabout | 8.5 | 90 | Oct 13, 2004 |
| #6 | Season 1, Ep 18 | Numbers | 8.5 | 77 | Mar 2, 2005 |
| #7 | Season 1, Ep 23 | Exodus (1) | 8.5 | 74 | May 18, 2005 |
| #8 | Season 1, Ep 11 | All the Best Cowboys Have Daddy Issues | 8.4 | 78 | Dec 8, 2004 |
| #9 | Season 1, Ep 20 | Do No Harm | 8.4 | 76 | Apr 6, 2005 |
| #10 | Season 1, Ep 16 | Outlaws | 8.3 | 76 | Feb 16, 2005 |