Skip to content
Compare TV
The Flash S06E19, Success Is AssuredS06E19

The Flash · Season 6

The Flash season 6 episode 19: Success Is Assured

Aired 12 May 202042 minRated TV-PG

6.2TMDB · 12 votesMark watched

Where to watch The Flash Season 6 in Australia

The Flash season 6 is streaming in Australia on Prime Video (subscription), HBO Max (subscription) and Stan (subscription), and free on 9Now. You can also buy it on Apple TV from $29.99, Fetch TV from $44.99 and Prime Video Store from $29.99.

We may earn a commission when you sign up through our links. How we make money.

Stream (subscription)

Free

Buy or rent

Availability checked 16 November 2026.

What happens in “Success Is Assured”

Barry considers a risky plan to save Iris from the Mirrorverse. Ralph attempts to stop Sue from making a grave mistake that could destroy her life.

Episode summary: TMDB.

Before you watch

  • It is the season finale of season 6, so watch episodes 1 to 18 first.
  • It runs about 42 minutes.
  • Directed by Phil Chipera, written by Kelly Wheeler and Lauren Barnett.
  • TMDB users rate it 6.2 out of 10 (12 votes).

The Flash trailer

The official trailer for the series (no preview of this episode has been published).

The Flash trailerPlay video: The Flash trailer

Cast and crew of this episode

Director
Phil Chipera
Writers
Kelly WheelerLauren Barnett
Guest stars
Kayla Compton as Allegra GarciaEric Nenninger as Joseph CarverMark Brandon as Richard DearbonVictoria Park as Kamilla HwangEfrat Dor as Eva McCulloch / Mirror MonarchNancy Hillis as Penelope DearbonAndrew J. Hampton as MauriceDarcy Hinds as McCulloch Guard

Credits: TMDB.

More from The Flash Season 6

Previous · S06E18Pay the Piper5 May 2020
  1. E01
  2. E02
  3. E03
  4. E04
  5. E05
  6. E06
  7. E07
  8. E08
  9. E09
  10. E10
  11. E11
  12. E12
  13. E13
  14. E14
  15. E15
  16. E16
  17. E17
  18. E18
  19. E19

Every episode of Season 6The Flash episode guide

Episode names, air dates, runtimes, stills and ratings: TMDB. Air dates are the first broadcast anywhere; where it streams is our daily Australian check.