| S1 EP1 | Pilot | 2014-10-07 | 7.2 |
| S1 EP2 | Fastest Man Alive | 2014-10-14 | 7.1 |
| S1 EP3 | Things You Can't Outrun | 2014-10-21 | 7 |
| S1 EP4 | Going Rogue | 2014-10-28 | 7 |
| S1 EP5 | Plastique | 2014-11-11 | 7.2 |
| S1 EP6 | The Flash Is Born | 2014-11-18 | 7.2 |
| S1 EP7 | Power Outage | 2014-11-25 | 6.9 |
| S1 EP8 | Flash vs. Arrow | 2014-12-02 | 7.3 |
| S1 EP9 | The Man in the Yellow Suit | 2014-12-09 | 7.4 |
| S1 EP10 | Revenge of the Rogues | 2015-01-20 | 6.8 |
| S1 EP11 | The Sound and the Fury | 2015-01-27 | 6.6 |
| S1 EP12 | Crazy for You | 2015-02-03 | 7.1 |
| S1 EP13 | The Nuclear Man | 2015-02-10 | 7 |
| S1 EP14 | Fallout | 2015-02-17 | 7 |
| S1 EP15 | Out of Time | 2015-03-17 | 7.3 |
| S1 EP16 | Rogue Time | 2015-03-24 | 6.8 |
| S1 EP17 | Tricksters | 2015-03-31 | 7.2 |
| S1 EP18 | All Star Team Up | 2015-04-14 | 7.2 |
| S1 EP19 | Who Is Harrison Wells? | 2015-04-21 | 7.4 |
| S1 EP20 | The Trap | 2015-04-28 | 7.3 |
| S1 EP21 | Grodd Lives | 2015-05-05 | 7 |
| S1 EP22 | Rogue Air | 2015-05-12 | 7.1 |
| S1 EP23 | Fast Enough | 2015-05-19 | 7.7 |
| S2 EP1 | The Man Who Saved Central City | 2015-10-06 | 7.1 |
| S2 EP2 | Flash of Two Worlds | 2015-10-13 | 7.6 |
| S2 EP3 | Family of Rogues | 2015-10-20 | 7.4 |
| S2 EP4 | The Fury of Firestorm | 2015-10-27 | 7.1 |
| S2 EP5 | The Darkness and the Light | 2015-11-03 | 7.3 |
| S2 EP6 | Enter Zoom | 2015-11-10 | 7.8 |
| S2 EP7 | Gorilla Warfare | 2015-11-17 | 7.4 |
| S2 EP8 | Legends of Today | 2015-12-01 | 7.9 |
| S2 EP9 | Running to Stand Still | 2015-12-08 | 7.3 |
| S2 EP10 | Potential Energy | 2016-01-19 | 7 |
| S2 EP11 | The Reverse-Flash Returns | 2016-01-26 | 7.4 |
| S2 EP12 | Fast Lane | 2016-02-02 | 7.2 |
| S2 EP13 | Welcome to Earth-2 | 2016-02-09 | 7.6 |
| S2 EP14 | Escape from Earth-2 | 2016-02-16 | 7.2 |
| S2 EP15 | King Shark | 2016-02-23 | 7.3 |
| S2 EP16 | Trajectory | 2016-03-22 | 6.9 |
| S2 EP17 | Flash Back | 2016-03-29 | 7.2 |
| S2 EP18 | Versus Zoom | 2016-04-19 | 7.1 |
| S2 EP19 | Back to Normal | 2016-04-26 | 6.9 |
| S2 EP20 | Rupture | 2016-05-03 | 7.1 |
| S2 EP21 | The Runaway Dinosaur | 2016-05-10 | 7 |
| S2 EP22 | Invincible | 2016-05-17 | 7.6 |
| S2 EP23 | The Race of His Life | 2016-05-24 | 7.6 |
| S3 EP1 | Flashpoint | 2016-10-04 | 6.8 |
| S3 EP2 | Paradox | 2016-10-11 | 6.8 |
| S3 EP3 | Magenta | 2016-10-18 | 6.8 |
| S3 EP4 | The New Rogues | 2016-10-25 | 7.5 |
| S3 EP5 | Monster | 2016-11-01 | 7 |
| S3 EP6 | Shade | 2016-11-15 | 7.1 |
| S3 EP7 | Killer Frost | 2016-11-22 | 7.1 |
| S3 EP8 | Invasion! | 2016-11-29 | 7.7 |
| S3 EP9 | The Present | 2016-12-06 | 7.6 |
| S3 EP10 | Borrowing Problems from the Future | 2017-01-24 | 7.1 |
| S3 EP11 | Dead or Alive | 2017-01-31 | 7.1 |
| S3 EP12 | Untouchable | 2017-02-07 | 7 |
| S3 EP13 | Attack on Gorilla City | 2017-02-21 | 7.1 |
| S3 EP14 | Attack on Central City | 2017-02-28 | 6.9 |
| S3 EP15 | The Wrath of Savitar | 2017-03-07 | 7.4 |
| S3 EP16 | Into the Speed Force | 2017-03-14 | 6.9 |
| S3 EP17 | Duet | 2017-03-21 | 6.6 |
| S3 EP18 | Abra Kadabra | 2017-03-28 | 7.2 |
| S3 EP19 | The Once and Future Flash | 2017-04-25 | 7.3 |
| S3 EP20 | I Know Who You Are | 2017-05-02 | 7.5 |
| S3 EP21 | Cause and Effect | 2017-05-09 | 7.5 |
| S3 EP22 | Infantino Street | 2017-05-16 | 7.2 |
| S3 EP23 | Finish Line | 2017-05-23 | 6.8 |
| S4 EP1 | The Flash Reborn | 2017-10-10 | 6.2 |
| S4 EP2 | Mixed Signals | 2017-10-17 | 6.4 |
| S4 EP3 | Luck Be a Lady | 2017-10-24 | 6.9 |
| S4 EP4 | Elongated Journey Into Night | 2017-10-31 | 7.3 |
| S4 EP5 | Girls Night Out | 2017-11-07 | 6.7 |
| S4 EP6 | When Harry Met Harry… | 2017-11-14 | 7.1 |
| S4 EP7 | Therefore I Am | 2017-11-21 | 6.7 |
| S4 EP8 | Crisis on Earth-X, Part 3 | 2017-11-28 | 7.3 |
| S4 EP9 | Don't Run | 2017-12-05 | 7.4 |
| S4 EP10 | The Trial of the Flash | 2018-01-16 | 6.9 |
| S4 EP11 | The Elongated Knight Rises | 2018-01-23 | 6.9 |
| S4 EP12 | Honey, I Shrunk Team Flash | 2018-01-30 | 7 |
| S4 EP13 | True Colors | 2018-02-06 | 7 |
| S4 EP14 | Subject 9 | 2018-02-27 | 6.5 |
| S4 EP15 | Enter Flashtime | 2018-03-06 | 7.1 |
| S4 EP16 | Run, Iris, Run | 2018-03-13 | 6.4 |
| S4 EP17 | Null and Annoyed | 2018-04-10 | 6.8 |
| S4 EP18 | Lose Yourself | 2018-04-17 | 6.8 |
| S4 EP19 | Fury Rogue | 2018-04-24 | 7.2 |
| S4 EP20 | Therefore She Is | 2018-05-01 | 7 |
| S4 EP21 | Harry and the Harrisons | 2018-05-08 | 6.7 |
| S4 EP22 | Think Fast | 2018-05-15 | 7 |
| S4 EP23 | We Are the Flash | 2018-05-22 | 7.5 |
| S5 EP1 | Nora | 2018-10-09 | 7.4 |
| S5 EP2 | Blocked | 2018-10-16 | 7 |
| S5 EP3 | The Death of Vibe | 2018-10-23 | 7.3 |
| S5 EP4 | News Flash | 2018-10-30 | 7.2 |
| S5 EP5 | All Doll'd Up | 2018-11-13 | 7.2 |
| S5 EP6 | The Icicle Cometh | 2018-11-20 | 6.9 |
| S5 EP7 | O Come, All Ye Thankful | 2018-11-27 | 7 |
| S5 EP8 | What's Past Is Prologue | 2018-12-04 | 7.6 |
| S5 EP9 | Elseworlds, Part 1 | 2018-12-09 | 7.9 |
| S5 EP10 | The Flash & The Furious | 2019-01-15 | 6.7 |
| S5 EP11 | Seeing Red | 2019-01-22 | 7.1 |
| S5 EP12 | Memorabilia | 2019-01-29 | 7.1 |
| S5 EP13 | Goldfaced | 2019-02-05 | 6.9 |
| S5 EP14 | Cause and XS | 2019-02-12 | 7 |
| S5 EP15 | King Shark vs. Gorilla Grodd | 2019-03-05 | 7.2 |
| S5 EP16 | Failure Is an Orphan | 2019-03-12 | 7.4 |
| S5 EP17 | Time Bomb | 2019-03-19 | 7.5 |
| S5 EP18 | Godspeed | 2019-04-16 | 7.6 |
| S5 EP19 | Snow Pack | 2019-04-23 | 7.2 |
| S5 EP20 | Gone Rogue | 2019-04-30 | 7.1 |
| S5 EP21 | The Girl with the Red Lightning | 2019-05-07 | 7.3 |
| S5 EP22 | Legacy | 2019-05-14 | 7.6 |
| S6 EP1 | Into the Void | 2019-10-08 | 7.3 |
| S6 EP2 | A Flash of the Lightning | 2019-10-15 | 7.3 |
| S6 EP3 | Dead Man Running | 2019-10-22 | 7.2 |
| S6 EP4 | There Will Be Blood | 2019-10-29 | 7.1 |
| S6 EP5 | Kiss Kiss Breach Breach | 2019-11-05 | 7.2 |
| S6 EP6 | License to Elongate | 2019-11-19 | 7.4 |
| S6 EP7 | The Last Temptation of Barry Allen, Part 1 | 2019-11-26 | 7.5 |
| S6 EP8 | The Last Temptation of Barry Allen, Part 2 | 2019-12-03 | 7.5 |
| S6 EP9 | Crisis on Infinite Earths: Part Three | 2019-12-10 | 7.3 |
| S6 EP10 | Marathon | 2020-02-04 | 7.2 |
| S6 EP11 | Love Is a Battlefield | 2020-02-11 | 6.9 |
| S6 EP12 | A Girl Named Sue | 2020-02-18 | 7 |
| S6 EP13 | Grodd Friended Me | 2020-02-25 | 7.1 |
| S6 EP14 | Death of the Speed Force | 2020-03-10 | 7 |
| S6 EP15 | The Exorcism of Nash Wells | 2020-03-17 | 7.2 |
| S6 EP16 | So Long and Goodnight | 2020-04-21 | 6.7 |
| S6 EP17 | Liberation | 2020-04-28 | 7.4 |
| S6 EP18 | Pay the Piper | 2020-05-05 | 6.6 |
| S6 EP19 | Success Is Assured | 2020-05-12 | 7 |
| S7 EP1 | All's Well That Ends Wells | 2021-03-02 | 6.7 |
| S7 EP2 | The Speed of Thought | 2021-03-09 | 7.3 |
| S7 EP3 | Mother | 2021-03-16 | 6.5 |
| S7 EP4 | Central City Strong | 2021-03-23 | 7.1 |
| S7 EP5 | Fear Me | 2021-03-30 | 6.7 |
| S7 EP6 | The One with the Nineties | 2021-04-06 | 7.2 |
| S7 EP7 | Growing Pains | 2021-04-13 | 7 |
| S7 EP8 | The People v. Killer Frost | 2021-05-04 | 6.8 |
| S7 EP9 | Timeless | 2021-05-11 | 6.6 |
| S7 EP10 | Family Matters, Part 1 | 2021-05-18 | 6.9 |
| S7 EP11 | Family Matters, Part 2 | 2021-05-25 | 6.8 |
| S7 EP12 | Good-Bye Vibrations | 2021-06-08 | 6.7 |
| S7 EP13 | Masquerade | 2021-06-15 | 6.9 |
| S7 EP14 | Rayo de Luz | 2021-06-22 | 6.5 |
| S7 EP15 | Enemy at the Gates | 2021-06-29 | 7.2 |
| S7 EP16 | P.O.W. | 2021-07-06 | 7.1 |
| S7 EP17 | Heart of the Matter, Part 1 | 2021-07-13 | 7 |
| S7 EP18 | Heart of the Matter, Part 2 | 2021-07-20 | 7 |
| S8 EP1 | Armageddon, Part 1 | 2021-11-16 | 6.6 |
| S8 EP2 | Armageddon, Part 2 | 2021-11-23 | 6.9 |
| S8 EP3 | Armageddon, Part 3 | 2021-11-30 | 7.2 |
| S8 EP4 | Armageddon, Part 4 | 2021-12-07 | 7 |
| S8 EP5 | Armageddon, Part 5 | 2021-12-14 | 6.7 |
| S8 EP6 | Impulsive Excessive Disorder | 2022-03-09 | 6.2 |
| S8 EP7 | Lockdown | 2022-03-16 | 6.7 |
| S8 EP8 | The Fire Next Time | 2022-03-23 | 6.2 |
| S8 EP9 | Phantoms | 2022-03-30 | 6.6 |
| S8 EP10 | Reckless | 2022-04-06 | 6.6 |
| S8 EP11 | Resurrection | 2022-04-13 | 6.4 |
| S8 EP12 | Death Rises | 2022-04-27 | 6.4 |
| S8 EP13 | Death Falls | 2022-05-04 | 6.3 |
| S8 EP14 | Funeral for a Friend | 2022-05-11 | 5.8 |
| S8 EP15 | Into the Still Force | 2022-05-18 | 6.2 |
| S8 EP16 | The Curious Case of Bartholomew Allen | 2022-05-25 | 6.7 |
| S8 EP17 | Keep It Dark | 2022-06-08 | 5.9 |
| S8 EP18 | The Man in the Yellow Tie | 2022-06-15 | 6.5 |
| S8 EP19 | Negative, Part One | 2022-06-22 | 6.4 |
| S8 EP20 | Negative, Part Two | 2022-06-29 | 6.6 |
| S9 EP1 | Wednesday Ever After | 2023-02-08 | 6.4 |
| S9 EP2 | Hear No Evil | 2023-02-15 | 6 |
| S9 EP3 | Rogues of War | 2023-02-22 | 6.3 |
| S9 EP4 | The Mask of the Red Death, Part One | 2023-03-01 | 6.5 |
| S9 EP5 | The Mask of the Red Death, Part Two | 2023-03-08 | 5.8 |
| S9 EP6 | The Good, the Bad, and the Lucky | 2023-03-15 | 5.5 |
| S9 EP7 | Wildest Dreams | 2023-03-29 | 5.5 |
| S9 EP8 | Partners in Time | 2023-04-05 | 5.8 |
| S9 EP9 | It's My Party and I'll Die If I Want To | 2023-04-26 | 6.8 |
| S9 EP10 | A New World, Part 1: Reunions | 2023-05-03 | 6.5 |
| S9 EP11 | A New World, Part 2: The Blues | 2023-05-10 | 6.1 |
| S9 EP12 | A New World, Part 3: Changes | 2023-05-17 | 6.3 |
| S9 EP13 | A New World, Part 4: Finale | 2023-05-24 | 6.3 |