Last Aired S04E23 on May 22, 2018
The Flash
Season 4
6.8 (3245 Ratings)
Oct 10, 2017
44 Min

Cast: N/A
Crew: N/A

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All The Flash S04 Episodes

The Flash Seasons

  1. Watch The Flash Season 4 S04
    21 of 23 Ep. Available 2017

The Flash Episodes

  1. 23 Watch The Flash S04E23 online - We Are The Flash
    Available Aired on May 22, 2018
  2. 22
    Available Aired on May 15, 2018
  3. 21
    Available Aired on May 08, 2018
  4. 20
    Available Aired on May 01, 2018
  5. 19
    Available Aired on Apr 24, 2018
  6. 18
    Available Aired on Apr 17, 2018
  7. 17
    Available Aired on Apr 10, 2018
  8. 16
    Available Aired on Mar 13, 2018
  9. 15
    Available Aired on Mar 06, 2018
  10. 14
    Available Aired on Feb 27, 2018
  11. 13
    Available Aired on Feb 06, 2018
  12. 12
    Not Available Aired on Jan 30, 2018
  13. 11
    Available Aired on Jan 23, 2018
  14. 10
    Available Aired on Jan 16, 2018
  15. 9
    Available Aired on Dec 05, 2017
  16. 8
    Available Aired on Nov 28, 2017
  17. 7
    Available Aired on Nov 21, 2017
  18. 6
    Not Available Aired on Nov 14, 2017
  19. 5
    Available Aired on Nov 07, 2017
  20. 4
    Available Aired on Oct 31, 2017
  21. 3
    Available Aired on Oct 24, 2017
  22. 2
    Available Aired on Oct 17, 2017
  23. 1
    Available Aired on Oct 10, 2017

Watch The Flash season 4 episode 23 (S04E23)

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Team Flash gets help from a surprising ally in their battle against DeVoe.

Watch The Flash season 4 episode 22 (S04E22)

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When DeVoe assaults an A.R.G.U.S. facility to complete his Enlightenment Machine, Barry realizes the only way he can stop him is if he allows Cisco and Caitlin to accompany him into the facility. Still shaken by Ralph’s death, Barry isn’t sure he wants to risk any more of his friends’ lives and considers taking on DeVoe solo.

Watch The Flash season 4 episode 21 (S04E21)

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With DeVoe's Enlightenment device nearly complete, in order to disable it The Flash and his team must put their faith in an unlikely ally – Amunet Black. Meanwhile, Harry hits an all-time low when the "Council of Wells" kicks him out but then Cisco introduces him to the "Council of Harrisons."

Watch The Flash season 4 episode 20 (S04E20)

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Barry and Team Flash team up with Gypsy to try to thwart Thinker's plan. Meanwhile, Cisco and Gypsy have a heart to heart talk about their relationship.

Watch The Flash season 4 episode 19 (S04E19)

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When Barry needs help transporting a dangerous meta, he calls on a new friend for help - Leo Snart AKA Citizen Cold. Meanwhile, Cisco becomes suspicious of Harry.

Watch The Flash season 4 episode 18 (S04E18)

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When Barry and Team Flash find a way to enter The Thinker’s lair, Ralph considers crossing a dangerous line to defeat DeVoe. Meanwhile, Joe is concerned by Harry’s recent behavior.

Watch The Flash season 4 episode 17 (S04E17)

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Barry and Ralph take different approaches to finding the remaining bus metas before DeVoe gets to them. However, Ralph's cavalier attitude frustrates Barry and the two clash over what it means to be a hero. Meanwhile, Breacher returns to ask Cisco for a favor.

Watch The Flash season 4 episode 16 (S04E16)

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Team Flash confront a new bus meta, Matthew aka Melting Pot. He has the ability to swap people’s DNA, so during a battle with Team Flash, he transfers Barry’s super speed to Iris. Now, with a new threat unleashed on Central City, Barry must act as the team leader while Iris takes on the mantle of superhero speedster in order to defeat their new foe.

Watch The Flash season 4 episode 15 (S04E15)

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When a nuclear bomb detonates in downtown Central City, Barry, Jesse Quick and Jay Garrick slow down time by entering Flashtime. As everyone in the city is frozen, the three speedsters push themselves to the breaking point to save the city and everyone in it.

Watch The Flash season 4 episode 14 (S04E14)

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Barry meets a powerful woman whose abilities could help him in his battle with DeVoe. Meanwhile, after learning that DeVoe is targeting everyone who was on the bus, Ralph decides he doesn't want to be a hero anymore, his only concern is staying alive. Harry offers to help Joe.

Watch The Flash season 4 episode 13 (S04E13)

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After hearing that Amunet has struck a deal to buy all of the metahumans in Iron Heights, Barry must decide if he should expose his powers in order to save his cellmates. After a visit from an old friend, Ralph is reminded of his shady past and wonders if he’s really a changed man.

Watch The Flash season 4 episode 12 (S04E12)

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A meta who can shrink anything he touches battles Team Flash. Cisco and Ralph get caught in his crossfire and are shrunk to miniature versions of themselves. Cecile realizes her pregnancy has caused her to have temporary powers and discovers she can hear other people’s thoughts, which unnerves Joe. Meanwhile, Barry meets someone with a mysterious connection to Henry Allen.

Watch The Flash season 4 episode 11 (S04E11)

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When a familiar villain returns to terrorize Central City, Ralph must rise up to defend the innocent while Barry is detained by his trial. Meanwhile, Barry searches for the strength to keep his optimism alive in the face of his new circumstances.

Watch The Flash season 4 episode 10 (S04E10)

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As Barry’s trial for the murder of Clifford DeVoe begins, Iris and Joe must decide how far they are willing to go to keep Barry out of prison.

Watch The Flash season 4 episode 9 (S04E09)

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Amunet kidnaps Caitlin and puts meta-dampener handcuffs on her to keep her from turning into Killer Frost. Amunet tells Caitlin she needs her to perform a tricky medical task and if Caitlin fails, Amunet will kill her. Meanwhile, The Thinker traps The Flash in a speedster-proof prison. With the clock ticking, The Team doesn't have the time or resources to track both Caitlin and Barry so Iris is forced to choose who to save.

Watch The Flash season 4 episode 8 (S04E08)

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Barry and Iris's wedding brings the gang together, but things go awry when villains from Earth-X attack the ceremony. All of the superheroes band together with help from their super friends like Citizen Cold, The Ray, Felicity Smoak, Iris West and Alex Danvers to take on their most formidable villains yet. Earth's mightiest heroes - Green Arrow, Supergirl, The Flash and White Canary - lead their teams into battle to save the world. The crossover starts on Supergirl S03E08 Crisis on Earth X (I) and Arrow S06E08 Crisis on Earth X (II). It continues on DC's Legends of Tomorrow S03E08 Crisis on Earth X (IV).

Watch The Flash season 4 episode 7 (S04E07)

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Barry comes face to face with DeVoe. Devoe's past is revealed through flashbacks. Meanwhile, Iris puts the final touches on the wedding, which is a week away.

Watch The Flash season 4 episode 6 (S04E06)

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When collectors of Native American artifacts are attacked by a meta named Mina Chayton who can bring inanimate objects to life, Barry turns to a surprising ally for help. Determined to crack the identity of The Thinker, Harry enlists Cisco's help to summon the ultimate think tank: "The Council of Wells'," a roundtable of the brightest Harrison Wells' from various Earths.

Watch The Flash season 4 episode 5 (S04E05)

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Having received an ominous threat from her old boss, Amunet, Caitlin fears that her past time as Killer Frost may be back to haunt her. Felicity comes to Central City to help the girls celebrate Iris's bachelorette party, while Cisco, Joe and the guys take Barry out for a night on the town.

Watch The Flash season 4 episode 4 (S04E04)

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Cisco is shocked when Gypsy's father, Breacher, shows up on Earth-1. Breacher takes an immediate disliking to Cisco and decides to hunt him. Meanwhile, Barry runs into his old nemesis, Ralph Dibny.

Watch The Flash season 4 episode 3 (S04E03)

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Barry and the team are hit by a string of bad luck and realize it is the handiwork of a new meta, Becky nicknamed Hazard, who has the ability to give others bad luck, while cashing in the benefits for herself. Meanwhile, Harry Wells returns to Earth-1 to give Wally a message from Jesse.

Watch The Flash season 4 episode 2 (S04E02)

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Barry has his hands full when he takes on a dangerous meta who can control technology, while also confronting an obstacle in his personal life: the ramifications of abandoning Iris for six months to balance the Speed Force. Meanwhile, Gypsy breaches in for a hot date with Cisco, but she gets annoyed when his work keeps them apart.

Watch The Flash season 4 episode 1 (S04E01)

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With Barry in the speed force, Iris, Kid Flash, Joe and Vibe have taken over protecting Central City. However, when a powerful armored villain threatens to level the city if The Flash doesn't appear, Cisco makes a risky decision to break Barry out of the speed force. However, the Barry that comes out isn't the same Barry that went in.

How to watch The Flash season 4 (S04) online without downloading

  1. Watch The Flash season 4 online only at TVZion for free. No download or registration required.
  2. The Flash season 4 started airing on Oct 10, 2017 and we have updated 21 out of 23 aired episodes and we will add more as they air.
  3. Please note that new The Flash season 4 episodes can take upto 2 days to be updated after their first airing date.
  4. To watch The Flash season 4 episodes, select the season and episodes from the list above and the proper episode information will appear on the right side (or below in case of mobile devices), click on the watch now button below the episode info to go to episode page, and watch the respective episode without downloading.

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