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Season guide

Lost: Season 3

23 episodes Premiered Oct 4, 2006 Updated Oct 1, 2026

Lost Season 3 continues the overarching saga across twenty-three episodes. The television series, which is an American science fiction adventure drama created by Jeffrey Lieber, J.J. Abrams, and Damon Lindelof, originally aired on the ABC network. The overarching series follows the survivors of a horrific plane crash who are stripped of everything and must work together. The production features a cast including Navee

Previously on Lost

Season 3 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Lost is an American science fiction adventure drama television series created by Jeffrey Lieber, J.J. Abrams, and Damon Lindelof.
  • ⚡ The series originally aired on the ABC network from September 22, 2004, to May 23, 2010.
  • ⚡ The overarching narrative involves survivors of a horrific plane crash who are stripped of everything and must work together.
  • ⚡ The cast includes actors such as Naveen Andrews, Matthew Fox, Jorge Garcia, and Josh Holloway.
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Season overview

Lost Season 3 continues the overarching saga across twenty-three episodes. The television series, which is an American science fiction adventure drama created by Jeffrey Lieber, J.J. Abrams, and Damon Lindelof, originally aired on the ABC network. The overarching series follows the survivors of a horrific plane crash who are stripped of everything and must work together. The production features a cast including Naveen Andrews, Matthew Fox, Jorge Garcia, and Josh Holloway. The television show ran for a total of one hundred twenty-one episodes over six seasons from September 22, 2004, to May 23, 2010. During its run, the series received hundreds of industry award nominations and won numerous awards. The narrative details continue to unfold within the context of these overarching elements established across the multiple seasons of the broadcast run.

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Season 3 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 3 Progress Shield

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Binge Efficiency Engine

Season 3: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

Time Saved 0.7h Skipping 1 filler episode
13%
83%
Mytharc (3): Crucial lore & season climaxes
Core (19): Character development & subplots
Side Quest (1): Standalone / filler
S3·E1 Mytharc

A Tale of Two Cities

Oct 4, 2006 · 43 min

Jack, Kate, and Sawyer are prisoners of the mysterious "Others." After their captors drug them and take blood samples, they are held in separate areas. The camp leaders--Ben (Henry

S3·E2 Core

The Glass Ballerina

Oct 11, 2006 · 43 min

Sun and Jin's lives are put in danger when Sayid tries to locate Jack and the other missing castaways. Sayid also creates a plan in order to get the attention of the "Others" on th

S3·E3 Core

Further Instructions

Oct 18, 2006 · 42 min

Locke, Eko and Desmond are found scattered about the island after the implosion of the hatch. Locke receives a message from the Island asking him to fix the situation he caused. H

S3·E4 Core

Every Man for Himself

Oct 25, 2006 · 43 min

The Others prevent Sawyer and Kate from escaping, leaving Sawyer perplexed by the extent of the measures taken to keep them imprisoned. Jack is asked to use his medical training to

S3·E5 Core

The Cost of Living

Nov 1, 2006 · 43 min

A delirious Eko wrestles with past demons; some of the castaways go to the Pearl station to find a computer they can use to locate Jack, Kate and Sawyer; Jack does not know who to

S3·E6 Core

I Do

Nov 8, 2006 · 43 min

Jack makes a decision regarding Ben's offer. Sawyer's life is placed in danger when Pickett decides to make good on his threat. Locke discovers a hidden message that may help unloc

S3·E7 Core

Not in Portland

Feb 7, 2007 · 43 min

Jack has the Others in a desperate situation as he holds Ben's life in his hands. Meanwhile, Kate and Sawyer try to escape from their captors. Flashbacks reveal Juliet's past as a

S3·E8 Core

Flashes Before Your Eyes

Feb 14, 2007 · 43 min

After Desmond rescues Claire from drowning, Charlie gets Hurley to help him find out why Desmond has seemed able to predict the future. Desmond recalls exactly what took place in t

S3·E9 Core

Stranger in a Strange Land

Feb 21, 2007 · 43 min

As Kate and Sawyer journey back to the main island with Karl, who is exhibiting effects of the brainwashing video, they argue over whether to go back and save Jack. On Hydra island

S3·E10 Core

Tricia Tanaka Is Dead

Feb 28, 2007 · 43 min

Kate is still struggling over their decision to leave Jack in the hands of the Others as she and Sawyer return to their camp. Meanwhile, Hurley finds an old van in the jungle and

S3·E11 Core

Enter 77

Mar 7, 2007 · 44 min

On their mission to rescue Jack, Kate, Sayid, and Locke stumble upon a mysterious structure surrounded by farm animals and meet its strange inhabitant. Back at the camp, in order t

S3·E12 Core

Par Avion

Mar 14, 2007 · 44 min

Claire has an idea to send a message to the outside world. Charlie, however, is resistant to the idea, and Desmond tries to sabotage the plan. As Claire tries to get the truth behi

S3·E13 Core

The Man from Tallahassee

Mar 21, 2007 · 43 min

When Kate and Locke arrive at the Others' camp, Ben promises to tell Locke the island's secrets as long as he stops his destructive plan, and Kate's reunion with Jack doesn't go ve

S3·E14 Core

Exposé

Mar 28, 2007 · 42 min

As the truth about Sun's kidnapping by "the Others" comes to her attention, Hurley becomes suspicious of Sawyer's attempt to reveal the mystery behind two fellow survivors, Nikki a

S3·E15 Filler

Left Behind

Apr 4, 2007 · 43 min

Kate and Juliet are stranded in the jungle after Kate learns that there is a traitor in the survivor's midst. Meanwhile, Sawyer's poor attitude and selfish ways towards the beach c

S3·E16 Core

One of Us

Apr 11, 2007 · 43 min

The celebration of Jack's return is cut short when he arrives at the beach with an Other, Juliet, whose flashbacks pick up from where they left off, showing us how she got onto the

S3·E17 Core

Catch-22

Apr 18, 2007 · 42 min

Desmond convinces Hurley, Jin, and Charlie to follow him on a trek through the jungle after he receives a series of visions. Flashbacks reveal the time that Desmond spent with a cl

S3·E18 Core

D.O.C.

Apr 25, 2007 · 43 min

Sun allows Juliet to examine her when she learns that all of "The Others" pregnant woman died before they gave birth on the island. Meanwhile, Desmond and an unlikely nemesis colla

S3·E19 Core

The Brig

May 2, 2007 · 43 min

After abandoning the Others, Locke takes Sawyer on a trek through the jungle to help him eliminate a common enemy. Meanwhile, back at the beach, the parachutist Naomi has crucial i

S3·E20 Core

The Man Behind the Curtain

May 9, 2007 · 43 min

Ben unwillingly divulges information to Locke about the island, taking him on a journey to various locations including strange monuments and the mysterious Jacob. Back at the beach

S3·E21 Core

Greatest Hits

May 16, 2007 · 43 min

While Jack devises a plan to do away with "The Others" once and for all, Sayid uncovers a flaw in "The Others'" system that could lead to everyone's rescue. But it requires Charlie

S3·E22 Mytharc

Through the Looking Glass (1)

May 23, 2007 · 43 min

The season 3 finale finds the castaways preparing for an invasion by the slightly less mysterious Others, while Charlie and Desmond find more than they were looking for in the unde

S3·E23 Mytharc

Through the Looking Glass (2)

May 23, 2007 · 43 min

The season 3 finale finds the castaways preparing for an invasion by the slightly less mysterious Others, while Charlie and Desmond find more than they were looking for in the unde

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