TV episodes The Best Episodes of The Flash  

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There are so many good episodes of The Flash, but which ones really stand out? Do you like "Fash Enough" the best, or is "Flash vs. Arrow" your favorite episode of The Flash? To determine once and for all what the best episodes of The Flash are, let's rank every episode of The Flash from best to worst.

The Flash on CW is a superhero TV series based on the DC Comics character Barry Allen aka Flash. Starring Grant Gustin as the eponymous hero, The Flash was conceived as a spinoff of Arrow (Green Arrow). The series premiered on October 7, 2014 and has had crossover episodes with both Arrow and Supergirl. The series is critically acclaimed, with the second season having a perfect 100% score on Rotten Tomatoes.

Vote up your favorite episodes of The Flash, and downvote any bad episodes that you really didn't enjoy, despite how much you love the series as a whole. It can be painful to put one The Flash episode over the other when there are so many good ones, which is why you can vote on however many episodes you like.

1
9 0
Fast Enough is listed (or ranked) 1 on the list The Best Episodes of The Flash
Fast Enough Season 1 Episode 23: In the season one finale, Wells presents Barry with a life-altering choice, while Dr. Martin Stein and Ronnie Raymond (aka Firestorm) return to help the S.T.A.R. Labs team.

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2
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Welcome to Earth-2 is listed (or ranked) 2 on the list The Best Episodes of The Flash
Welcome to Earth-2 Season 2 Episode 14: Barry, Wells & Cisco journey to Earth-2 to rescue Wells' daughter, Jesse, and Barry's stunned when he meets Killer Frost (DANIELLE PANABAKER) and Deathstorm (ROBBIE AMELL).

3
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Flash vs. Arrow is listed (or ranked) 3 on the list The Best Episodes of The Flash
Flash vs. Arrow Season 1 Episode 8: In the first part of the epic crossover event with The Flash and Arrow, Barry is thrilled when Oliver, Felicity and Diggle join him in Central City to help stop a meta-human.

4
7 0
The Trap is listed (or ranked) 4 on the list The Best Episodes of The Flash
The Trap Season 1 Episode 20: Barry, Caitlin, Cisco & Joe set a trap for Wells - using Cisco as bait. Meanwhile, Eddie makes a decision regarding Iris that leaves him unsettled.

5
6 0
Invasion! is listed (or ranked) 5 on the list The Best Episodes of The Flash
Invasion! Season 3 Episode 8: When aliens called the Dominators attack Central City, Barry asks for help from the Green Arrow, the Legends of Tomorrow and Supergirl in the first part of the epic crossover event.

6
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I Know Who You Are is listed (or ranked) 6 on the list The Best Episodes of The Flash
I Know Who You Are Season 3 Episode 20: Barry and the team meet Tracy Brand (ANNE DUDEK), a scientist, who may be the key to stopping Savitar. Unfortunately, Killer Frost is also after Tracy.

7
5 0
The Man Who Saved Central City is listed (or ranked) 7 on the list The Best Episodes of The Flash
The Man Who Saved Central City Season 2 Episode 1: In the season premiere, Barry Allen (GRANT GUSTIN) has chosen to protect the city on his own - until a meta-human named Atom Smasher (ADAM COPELAND) attacks.

8
5 0
All Star Team Up is listed (or ranked) 8 on the list The Best Episodes of The Flash
All Star Team Up Season 1 Episode 18: Barry is surprised when Felicity arrives in Central City with Ray Palmer who needs help from STAR Labs with his ATOM suit, while Barry needs help vs. a metahuman named Brie Larvan.

9
6 1
Out of Time is listed (or ranked) 9 on the list The Best Episodes of The Flash
Out of Time Season 1 Episode 15: Mark Mardon aka The Weather Wizard appears in Central City to avenge his brother's death at the hands of Joe. And Cisco realizes that Dr. Wells is hiding something.

10
7 2
Infantino Street is listed (or ranked) 10 on the list The Best Episodes of The Flash
Infantino Street Season 3 Episode 22: With only 24 hours left to save Iris from Savitar, Barry decides to use any means necessary and turns to Captain Cold (WENTWORTH MILLER) for help.

11
4 0
The Man in the Yellow Suit is listed (or ranked) 11 on the list The Best Episodes of The Flash
The Man in the Yellow Suit Season 1 Episode 9: When Barry finds himself face to face with his nemesis, the Man in the Yellow Suit (aka Reverse Flash), who killed his mother, he turns to Dr. Tina McGee (AMANDA PAYS) for help.

12
4 0
Grodd Lives is listed (or ranked) 12 on the list The Best Episodes of The Flash
Grodd Lives Season 1 Episode 21: While Barry deals with the Reverse Flash's latest threat to a member of the group, Dr. Wells unleashes Grodd on the city in order to distract Barry and the team.

13
4 0
Family of Rogues is listed (or ranked) 13 on the list The Best Episodes of The Flash
Family of Rogues Season 2 Episode 3: When Barry and the team find out Captain Cold (WENTWORTH MILLER) has been kidnapped, they form an uneasy alliance with his sister, Lisa (PEYTON LIST).

14
4 0
Enter Zoom is listed (or ranked) 14 on the list The Best Episodes of The Flash
Enter Zoom Season 2 Episode 6: Barry comes up with a dangerous plan to defeat Zoom. Although Caitlin sides with Jay and deems it too dangerous, Iris shows her support with a surprising ally.

15
5 2
Tricksters is listed (or ranked) 15 on the list The Best Episodes of The Flash
Tricksters Season 1 Episode 17: MARK HAMILL (Star Wars) reprises his role as James Jesse aka The Trickster, when a copycat killer (DEVON GRAYE) starts setting bombs off in Central City.

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16
5 2
Rogue Air is listed (or ranked) 16 on the list The Best Episodes of The Flash
Rogue Air Season 1 Episode 22: As Wells once again gets the upper hand on the S.T.A.R. Labs team, Barry reaches out to an old foe, Captain Cold, and friends, the Arrow and Firestorm, for help.

17
5 2
Legends of Today is listed (or ranked) 17 on the list The Best Episodes of The Flash
Legends of Today Season 2 Episode 8: Vandal Savage (CASPER CRUMB) sets his sights on Kendra Saunders, forcing Barry to hide Kendra in Star City with Oliver and the Arrow team in part one of the epic crossover.

18
5 2
Dead or Alive is listed (or ranked) 18 on the list The Best Episodes of The Flash
Dead or Alive Season 3 Episode 11: H.R.’s past catches up with him when a bounty hunter with vibe powers named Gypsy (JESSICA CAMACHO) arrives in Central City to bring him back to Earth-19 to stand trial for a crime.

19
5 2
Invincible is listed (or ranked) 19 on the list The Best Episodes of The Flash
Invincible Season 2 Episode 23: After Zoom unleashes an army of meta-humans on Central City, Barry is shaken when he sees their leader is the Black Canary's Earth-2 doppelganger, the Black Siren (KATIE CASSIDY).

20
4 1
Cause and Effect is listed (or ranked) 20 on the list The Best Episodes of The Flash
Cause and Effect Season 3 Episode 21: Barry takes drastic measures to stop Savitar. Meanwhile, H.R. continues to push Tracy Brand to design the trap for Savitar; and Killer Frost returns with an interesting proposal.

21
3 0
Killer Frost is listed (or ranked) 21 on the list The Best Episodes of The Flash
Killer Frost Season 3 Episode 7: In order to save Barry, Caitlin uses her powers, but the effort unleashes her inner Killer Frost, who ends up battling both The Flash and Vibe. Kevin Smith directs.

22
3 0
Flash Back is listed (or ranked) 22 on the list The Best Episodes of The Flash
Flash Back Season 2 Episode 18: Determined to stop Zoom forever by increasing his speed, Barry travels back in time to consult his former mentor/nemesis Harrison Wells/Eobard Thawne.

23
3 0
Pilot is listed (or ranked) 23 on the list The Best Episodes of The Flash
Pilot Season 1 Episode 1: In the series premiere, Central City forensic scientist Barry Allen (GRANT GUSTIN) is accidentally given the power of super speed in a freak particle accelerator accident.

24
3 0
The Once and Future Flash is listed (or ranked) 24 on the list The Best Episodes of The Flash
The Once and Future Flash Season 3 Episode 19: Barry travels to the future to find out Savitar’s identity in hopes of finding Iris, but in 2024, he encounters future versions of Team Flash who are very different people.

25
4 2
Power Outage is listed (or ranked) 25 on the list The Best Episodes of The Flash
Power Outage Season 1 Episode 7: When The Flash goes up against Farooq aka Blackout, a meta-human who can harness electricity, he zaps The Flash and siphons all his electricity, leaving him without his speed.

26
4 2
Versus Zoom is listed (or ranked) 26 on the list The Best Episodes of The Flash
Versus Zoom Season 2 Episode 19: Equipped with the tachyon device, Barry believes he is fast enough to stop Zoom (TEDDY SEARS) and convinces Wells and Cisco to open the breaches to catch him.

27
2 0
Revenge of the Rogues is listed (or ranked) 27 on the list The Best Episodes of The Flash
Revenge of the Rogues Season 1 Episode 10: When Captain Cold (WENTWORTH MILLER) returns to Central City with a hotheaded partner - Mick Rory aka Heat Wave (DOMINIC PURCELL) - they challenge The Flash to an epic battle.

28
2 0
Untouchable is listed (or ranked) 28 on the list The Best Episodes of The Flash
Untouchable Season 3 Episode 12: Barry and the S.T.A.R. Labs team work to bring down Clive Yorkin (MATTHEW KEVIN ANDERSON) a meta-human who causes people to decompose at an accelerated rate.

29
2 0
Therefore I Am is listed (or ranked) 29 on the list The Best Episodes of The Flash
Therefore I Am Season 4 Episode 7: Barry comes face to face with DeVoe (NEIL SANDILANDS), whose past is revealed through flashbacks. Meanwhile, Iris puts the final touches on the wedding, which is a week away.

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30
2 0
Abra Kadabra is listed (or ranked) 30 on the list The Best Episodes of The Flash
Abra Kadabra Season 3 Episode 18: The Flash battles Earth-19 villain Abra Kadabra (guest star DAVID DASTMALCHIAN) who offers up Savitar’s true identity in exchange for his release.

31
2 0
The Fury of Firestorm is listed (or ranked) 31 on the list The Best Episodes of The Flash
The Fury of Firestorm Season 2 Episode 4: Barry and the team look for another Firestorm match for Dr. Stein (VICTOR GARBER), but when they meet Jefferson "Jax" Jackson (FRANZ DRAMEH), Caitlin has her reservations.

32
3 2
Shade is listed (or ranked) 32 on the list The Best Episodes of The Flash
Shade Season 3 Episode 6: When Wally starts having dreams about being Kid Flash, Barry realizes he has to tell Wally, Iris and Joe about what happened to Wally in Flashpoint in order to keep him safe.

33
3 2
The Race of His Life is listed (or ranked) 33 on the list The Best Episodes of The Flash
The Race of His Life Season 2 Episode 24: In the Season Two finale, Zoom reveals his true plan and Barry vows to do whatever it takes to stop him.

34
3 2
Fast Lane is listed (or ranked) 34 on the list The Best Episodes of The Flash
Fast Lane Season 2 Episode 13: Barry teams up with Wells to figure out how to close the breaches, while Iris, concerned for Wally's safety, makes a bold move that puts her in danger.

35
3 2
Potential Energy is listed (or ranked) 35 on the list The Best Episodes of The Flash
Potential Energy Season 2 Episode 11: While Joe (JESSE L. MARTIN) and Iris get to know Wally, Barry considers telling Patty that he's The Flash. And the team hunts down a metahuman who can slow time itself.

36
3 2
Attack on Central City is listed (or ranked) 36 on the list The Best Episodes of The Flash
Attack on Central City Season 3 Episode 14: When Grodd (voiced by DAVID SOBOLOV) and his army of gorillas bring the battle to Earth-1, The Flash and team must find a way to stop them before they destroy Central City.

37
3 2
The Darkness and the Light is listed (or ranked) 37 on the list The Best Episodes of The Flash
The Darkness and the Light Season 2 Episode 5: When Dr. Light comes through the portal, Barry sets off to capture her. During a fight with The Flash, however, she blinds him and drops some shocking news about Zoom.

38
2 1
Fastest Man Alive is listed (or ranked) 38 on the list The Best Episodes of The Flash
Fastest Man Alive Season 1 Episode 2: Much to Joe's disapproval, Barry has fun with his new powers, but a setback makes him question his ability to be a hero. Iris (CANDICE PATTON) is intrigued by the "red streak."

39
1 0
Elongated Journey Into Night is listed (or ranked) 39 on the list The Best Episodes of The Flash
Elongated Journey Into Night Season 4 Episode 4: Cisco is shocked when Gypsy (JESSICA CAMACHO) and her father, Breacher (DANNY TREJO) show up on Earth-1. And Breacher really dislikes him!

40
1 0
Duet is listed (or ranked) 40 on the list The Best Episodes of The Flash
Duet Season 3 Episode 17: DARREN CRISS guest stars as The Music Meister in The Flash and Supergirl Musical Crossover.

41
1 0
Flashpoint is listed (or ranked) 41 on the list The Best Episodes of The Flash
Flashpoint Season 3 Episode 1: In the season premiere, Barry Allen (GRANT GUSTIN) is living the life he always wanted. But there are serious repercussions to living in this alternate Flashpoint universe.

42
1 0
Attack on Gorilla City is listed (or ranked) 42 on the list The Best Episodes of The Flash
Attack on Gorilla City Season 3 Episode 13: When Jesse Quick informs the team that her father has been abducted, Barry, Caitlin, Cisco and Julian voyage to Earth-2 on a rescue mission to save Harry from Gorilla City.

43
1 0
When Harry Met Harry… is listed (or ranked) 43 on the list The Best Episodes of The Flash
When Harry Met Harry… Season 4 Episode 6: Determined to crack the identity of The Thinker, Harry enlists Cisco’s help to summon the ultimate think tank – a roundtable of the brightest Harrison Wells’ from various Earths.

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44
1 0
Into the Speed Force is listed (or ranked) 44 on the list The Best Episodes of The Flash
Into the Speed Force Season 3 Episode 16: Desperate to stop Savitar and save his friends, Barry turns to the speed force for answers. Meanwhile, H.R. gives Jesse some advice.

45
1 0
The Runaway Dinosaur is listed (or ranked) 45 on the list The Best Episodes of The Flash
The Runaway Dinosaur Season 2 Episode 22: With Barry gone, the team must figure out a way to handle the return of an old enemy - Girder (GREG FINLEY), by trying to trap him in S.T. A. R. Labs.

46
1 0
Legends of Yesterday is listed (or ranked) 46 on the list The Best Episodes of The Flash
Legends of Yesterday Season 2 Episode 9: In Part Two of the epic Flash crossover event, Oliver and Barry hide Kendra Saunders and Carter Hall in a remote location while they figure out how to defeat Vandal Savage.

47
1 0
Flash of Two Worlds is listed (or ranked) 47 on the list The Best Episodes of The Flash
Flash of Two Worlds Season 2 Episode 2: Jay Garrick (TEDDY SEARS), a mysterious man from Earth-2, appears at S.T.A.R. Labs with a dire warning about an evil speedster named Zoom, who is set on destroying The Flash.

48
1 0
The Reverse-Flash Returns is listed (or ranked) 48 on the list The Best Episodes of The Flash
The Reverse-Flash Returns Season 2 Episode 12: When Cisco gets a vibe of Eobard Thawne, Barry and the team don't believe it. But, after an attack at Mercury Labs, Christina McGee confirms that the Reverse-Flash is back.

49
1 0
Plastique is listed (or ranked) 49 on the list The Best Episodes of The Flash
Plastique Season 1 Episode 5: After a bomb goes off downtown, Barry, Joe and the team from STAR Labs encounter Plastique, one of the army's supersoldiers who can detonate things by touching them.

50
1 0
The Sound and the Fury is listed (or ranked) 50 on the list The Best Episodes of The Flash
The Sound and the Fury Season 1 Episode 11: Dr. Wells' former protégée, Hartley Rathaway (ANDY MIENTUS), returns to seek revenge on his mentor after being affected by the particle accelerator explosion.