Lost Episode Count Comparison (Seasons)
How many Lost episodes per season? Compare all 6 season counts plus the 121 total, from 14 in season 4 to 25 in season 1, using official ABC episode guides.
Visual comparison
All values
Click any row to load it as Entry A.
| Name | Value | Context | Source |
|---|---|---|---|
| Full series episodes Top here at 121 episodes. | 121 episodes | Full ABC run, 2004 to 2010 | ABC episode guide: Lost 121 episodes total |
| Season 1 episodes Longest here at 25 episodes. | 25 episodes | Season 1, 2004 to 2005 | ABC episode guide: Season 1 25 episodes |
| Season 2 episodes 24 episodes. Hatch year. | 24 episodes | Season 2, 2005 to 2006 | ABC episode guide: Season 2 24 episodes |
| Season 3 episodes 23 episodes. Others arc. | 23 episodes | Season 3, 2006 to 2007 | ABC episode guide: Season 3 23 episodes |
| Season 4 episodes Lowest here at 14. Strike cut. | 14 episodes | Season 4, 2008 | ABC episode guide: Season 4 14 episodes |
| Season 5 episodes 17 episodes. Time jumps. | 17 episodes | Season 5, 2009 | ABC episode guide: Season 5 17 episodes |
| Season 6 episodes Final season at 18. | 18 episodes | Season 6, 2010 | ABC episode guide: Season 6 18 episodes |
About this converter
Lost ran 121 episodes on ABC from 2004 to 2010. Season 1 is the longest at 25, counting the double length pilot as two episodes in ABC totals. Season 4 is the shortest at 14 after the 2007 writers strike cut the year. Seasons 5 and 6 were planned short at 17 and 18 as part of the endgame deal with ABC. The recap specials never enter the rows. All values follow ABC season totals. The full 121 equals almost 9 season 4 orders. Season 1 at 25 is 11 more than season 4 at 14. Seasons 5 and 6 at 17 and 18 were planned short to close the story.
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.
The pilot aired as two hours but counts as two episodes, which sets season 1 at 25. The strike explains season 4 at 14. Enhanced encore recaps stay out because only first run episodes are counted. The epilogue New Man in Charge stays out for the same reason. The pilot counts as 2 episodes in ABC totals used here. Recap specials stay out. The epilogue New Man in Charge stays out because only first run episodes count.
FAQ
How many Lost episodes exist?
121 episodes across 6 seasons on ABC.
Which season is shortest?
Season 4 with 14 episodes, cut by the writers strike.
Why is season 1 at 25?
ABC counts the double pilot as episodes 1 and 2.
Are recap specials included?
No. Only first run season episodes are counted.
Sources
- ABC official Lost episode guide (total 121, season 1 25, season 2 24, season 3 23)
- ABC episode guide (season 4 14, season 5 17, season 6 18)
Last verified: 2026-10-09 · 7 entries
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