DramaSci-Fi & FantasyThe CW

The Best Episodes of The Flash Season 9

Every episode of The Flash Season 9 ranked from best to worst. Discover the Best Episodes of The Flash Season 9!

Binge this in 9h 15m·Peaking at 8.6/10
BestEpisodes
WorstEpisodes
BestSeasons
AllEpisodes

Seasons9

All123456789

Episode Rankings

  1. #1 Fan Favorite
    The Flash Season 9 Episode 10 - A New World (1)
    8.6/10(2649 votes)

    S9:E10

    As Iris receives word of a career milestone, Barry is suddenly nowhere to be found. In trying to get back home, Barry runs across many familiar faces. Khione continues to figure out her powers, and Chester works on a suit for Allegra.

    Director:Eric Wallace
    Writers:Thomas Pound, Eric Wallace

    Be the first to start the conversation for this episode

  2. The Flash Season 9 Episode 9 - It's My Party and I'll Die If I Want To
    8.5/10(2655 votes)

    S9:E9

    Team Flash throws a surprise birthday party for Barry, but things go terribly awry when Ramsey Rosso crashes the festivities.

    Director:Danielle Panabaker
    Writers:Sam Chalsen, Emily Palizzi

    Be the first to start the conversation for this episode

  3. The Flash Season 9 Episode 1 - Wednesday Ever After
    6.7/10(2005 votes)

    S9:E1

    Barry creates a map book to guide him and Iris throughout their future in order to keep her safe, but the results are not what he expected, and instead, they relive the same day over and over again. Joe has a heart-to-heart with Cecile. A new big bad is introduced to Team Flash and friends and foes, old and new, begin to descend upon Central City.

    Director:Vanessa Parise
    Writer:Unknown

    Be the first to start the conversation for this episode

  4. The Flash Season 9 Episode 11 - A New World (2)
    6.3/10(1674 votes)

    S9:E11

    Iris is alarmed by Barry's disappearance and Cecile assures her everything will be ok, but does she know that for certain? Team Flash is affected by a mysterious substance and Khione develops a better understanding of what she can and cannot control.

    Director:Kayla Compton
    Writer:Unknown

    Be the first to start the conversation for this episode

  5. The Flash Season 9 Episode 12 - A New World (3)
    6.3/10(1624 votes)

    S9:E12

    Team Flash works together to figure out how to protect Barry, all while being very careful who they trust. Cecile is skeptical of the plan after an unsuccessful attempt. Khione's confidence in Chester enables him to convince Cecile to try one more time.

    Director:Stefan Pleszczynski
    Writers:Jonathan Butler, Sarah Tarkoff

    Be the first to start the conversation for this episode

  6. The Flash Season 9 Episode 3 - Rogues of War
    6.0/10(1716 votes)

    S9:E3

    Barry and Iris start to put together the pieces of what's happening in Central City and believe they know what the Rogues are after. Team Flash works together and recruits some unlikely allies to help, and the plan does not go as Team Flash expects. Meanwhile, Allegra does her best to avoid having a conversation with Chester.

    Director:Brenton Spencer
    Writer:Unknown

    Be the first to start the conversation for this episode

    7. Trending NowTRENDING NOW

    The 20 BEST Episodes of The Flash

    READ
  7. The Flash Season 9 Episode 4 - Mask of the Red Death (1)
    5.8/10(1686 votes)

    S9:E4

    The Flash is forced to make an impossible choice. With the power out in the city, Team Flash calls upon the Rogue Squad to help as Iris is visited by an old friend. Joe and Cecile work on finding a balance.

    Director:Menhaj Huda
    Writers:Joshua V. Gilbert, Emily Palizzi

    Be the first to start the conversation for this episode

  8. The Flash Season 9 Episode 2 - Hear No Evil
    5.5/10(1756 votes)

    S9:E2

    Barry feels guilty for what happened to Caitlin, and Mark comes up with a plan that makes everyone skeptical. Meanwhile, Red Death looms in Central City and commands that failure is not an option. Joe asks Cecile to make a choice that leads Cecile to think about the greater good. Allegra and Chester take a step in a new direction. Lastly, old friends pay an unexpected visit to S.T.A.R. Labs.

    Director:Eric Wallace
    Writers:Jonathan Butler, Kristen Kim

    Be the first to start the conversation for this episode

  9. The Flash Season 9 Episode 5 - Mask of the Red Death (2)
    5.5/10(1668 votes)

    S9:E5

    As the Red Death wreaks havoc on Central City, Barry and Iris come up with a plan and turn to Cecile for help. Barry is faced with what he thinks was his greatest mistake and the Red Death's greatest success. Khione wants to help Team Flash, but Barry can't risk losing her. Joe gives Barry a much-needed pep talk.

    Director:Rachel Talalay
    Writer:Unknown

    Be the first to start the conversation for this episode

  10. The Flash Season 9 Episode 8 - Partners in Time
    5.4/10(1596 votes)

    S9:E8

    A seemingly simple mold inspection at S.T.A.R. Labs leads to unexpected time anomalies. Barry and Iris try to make sense of the confusion - and figure out how to get back to their reality. Chester admits a secret to Allegra, which makes things awkward between the two, and Allegra relies on Cecile to act as a buffer. Meanwhile, Khione meets with an old friend of Team Flash.

    Director:Ed Fraiman
    Writers:Joshua V. Gilbert, Sarah Tarkoff

    Be the first to start the conversation for this episode

  11. The Flash Season 9 Episode 13 - A New World (4)
    5.2/10(2997 votes)

    S9:E13

    The Flash, the fastest man alive, is tasked with his greatest challenge yet, to save the timeline and save existence. Friends old and new gather for an epic battle to save Central City, one last time.

    Director:Vanessa Parise
    Writers:Sam Chalsen, Eric Wallace

    Be the first to start the conversation for this episode

  12. The Flash Season 9 Episode 7 - Wildest Dreams
    4.6/10(1800 votes)

    S9:E7

    Iris is visited by Nia Nal, as she needs Iris' help. When Iris and Nia fall into a fever dream and explore different possibilities for their lives, Barry, Chester, Allegra, and Cecile desperately try to help them. Meanwhile, Mark entertains Khione, but they have different ideas of what is fun, leaving Khione to feel that Mark is trying to make her something she is not.

    Director:Jesse Warn
    Writers:Jeff Hersh, Kristen Kim

    Be the first to start the conversation for this episode

  13. The Flash Season 9 Episode 6 - The Good, the Bad and the Lucky
    3.8/10(2153 votes)

    S9:E6

    As Barry and Iris prepare for their new life, luck changes for those in Central City. Cecile takes on a case with Allegra's help, involving a string of unfortunate – and highly unexpected – events. Meanwhile, Chester and the team work with Khione to figure out her abilities.

    Director:Chad Lowe
    Writers:Thomas Pound, Jess Carson

    Be the first to start the conversation for this episode

Season 9 Ratings Summary

"A New World (1)" is the best rated episode of The Flash season 9. It scored 8.6/10 from 2,649 votes. Directed by Eric Wallace and written by Thomas Pound, Eric Wallace, it aired on May 3, 2023. This episode is rated 0.1 points higher than the second-best, "It's My Party and I'll Die If I Want To".