Watch The 100 Season 3 full episodes online, free and paid options via our partners and affiliates.

Inside the City of Light - The 100 Season 3 Episode 16
Watch The 100 Season 3 Episode 16
"Perverse Instantiation - Part Two"
Original Air Date:

On The 100 Season 3 Episode 16, the season's epic and mind-bending conclusion, our heroes begin to face the reality of their tragic situation. Everyone prepares for a final showdown.

Bound Roan - The 100 Season 3 Episode 15
Watch The 100 Season 3 Episode 15
"Perverse Instantiation - Part One"
Original Air Date:

On the first part of The 100 Season 3 Finale, Clarke finds hope in the most unlikely place. Meanwhile, ALIE's master plan comes together.

Convincing Luna - The 100 Season 3 Episode 14
Watch The 100 Season 3 Episode 14
"Red Sky at Morning"
Original Air Date:

On The 100 Season 3 Episode 14, Clarke, Bellamy, Octavia and Jasper hit a tragic roadblock. Meanwhile, Raven and Monty make an important discovery.

Looking For Luna - The 100 Season 3 Episode 13
Watch The 100 Season 3 Episode 13
"Join or Die"
Original Air Date:

On The 100 Season 3 Episode 13, Clarke is on a mission that could change everything. Meanwhile, Murphy gains insight that might help ensure his survival and Kane reaches a breaking point.

The Group Returns to Arkadia - The 100 Season 3 Episode 12
Watch The 100 Season 3 Episode 12
"Demons"
Original Air Date:

On The 100 Season 3 Episode 12, Jaha returns to Polis, and Murphy has a surprise encounter. Meanwhile, Octavia uncovers a clue back at Arkadia.

Bellamy vs. Niylah? - The 100 Season 3 Episode 11
Watch The 100 Season 3 Episode 11
"Nevermore"
Original Air Date:

On The 100 Season 3 Episode 11, ALIE forces Raven's dark side out, while Jasper’s anger continues to grow. Meanwhile, Octavia wrestles with her place in the world, and Monty is forced to make a split second decision.

The Hostage - The 100 Season 3 Episode 10
Watch The 100 Season 3 Episode 10
"Fallen"
Original Air Date:

On The 100 Season 3 Episode 10, Jaha attempts to convince Abby to join his cause, while Bellamy is hit with a hard truth. Meanwhile, Monty is in a precarious situation, and Jasper rushes to save one of his own.

A Kabby Moment - The 100 Season 3 Episode 9
Watch The 100 Season 3 Episode 9
"Stealing Fire"
Original Air Date:

On The 100 Season 3 Episode 9, Roan and Ontari arrive at Polis where Lexa's funeral is taking place, while Kane awaits execution back at Arkadia.

Face Off - The 100 Season 3 Episode 8
Watch The 100 Season 3 Episode 8
"Terms and Conditions"
Original Air Date:

On The 100 Season 3 Episode 8, Kane searches for a peaceful resolution but may need to resort to drastic measures, while Pike suspects there may be a mole and Raven enlists Jasper's help.

Commander on the Throne - The 100 Season 3 Episode 7
Watch The 100 Season 3 Episode 7
"Thirteen"
Original Air Date:

On The 100 Season 3 Episode 7, Lexa tries to maintain peace and Clarke uncovers a game-changing truth. Meanwhile, a flashback shows us a darker chapter of humanity's past.

Clarke and Lexa Meet With Titus - The 100 Season 3 Episode 6
Watch The 100 Season 3 Episode 6
"Bitter Harvest"
Original Air Date:

On The 100 Season 3 Episode 6, Clarke is torn between vengeance and mercy, while Kane and Octavia work together to avert a disaster and Abby worries about Raven.

Clarke and Abby Face A Threat - The 100 Season 3 Episode 5
Watch The 100 Season 3 Episode 5
"Hakeldama"
Original Air Date:

On The 100 Season 3 Episode 5, Clarke's hopes for peace are crushed by a new threat. Raven becomes a target. Meanwhile, Murphy is running a dangerous con.

Ice Queen on Her Throne - The 100 Season 3 Episode 4
Watch The 100 Season 3 Episode 4
"Watch the Thrones"
Original Air Date:

On The 100 Season 3 Episode 4, Clarke discovers a mastermind with a devious plan, while Kane attempts to keep the peace and Jasper’s grief drives him to act recklessly.

Not a Nice Greeting - The 100 Season 3 Episode 3
Watch The 100 Season 3 Episode 3
"Ye Who Enter Here"
Original Air Date:

On The 100 Season 3 Episode 3, Clarke struggles with a decision, as Bellamy finds out that something isn't what it appears to be and Murphy plots to betray former Chancellor Jaha.

Clarke Held Captive - The 100 Season 3 Episode 2
Watch The 100 Season 3 Episode 2
"Wanheda: Part Two"
Original Air Date:

On The 100 Season 3 Episode 2, Bellamy and Kane risk their lives to rescue Clarke, as Abby considers a new use for Mount Weather, and Murphy plots against Jaha.

Clarke's New Look - The 100 Season 3 Episode 1
Watch The 100 Season 3 Episode 1
"Wanheda: Part One"
Original Air Date:

On The 100 Season 3 Premiere, we rejoin a drastically altered Clarke months after the Mount Weather Massacre, as she is on the run from everyone.

The 100 Season 3 Quotes

Lexa: My fight is over.
Clarke: No, I won't accept that.
Lexa: You were right, Clarke. Life is about more than just surviving.
Clarke: In peace may you leave the shore. In love may you find the next. Safe passage on your travels until our final journey on the ground... May we meet again.

Jaha: No pain, no hate, no envy.
Murphy: No thanks.
Jaha: John...
Murphy: No. Pain, hate, envy. Those are the ABCs of me. You get rid of them and there's nothing left, so why don't you get that thing out of my face?