| Episode # | Title | | :--- | :--- | | 1 | The Man Who Saved Central City | | 2 | Flash of Two Worlds | | 3 | Family of Rogues | | 4 | The Fury of Firestorm | | 5 | The Darkness and the Light | | 6 | Enter Zoom | | 7 | Gorilla Warfare | | 8 | Legends of Today (Arrowverse Crossover) | | 9 | Running to Stand Still | | 10 | Potential Energy | | 11 | The Reverse-Flash Returns | | 12 | Fast Lane | | 13 | Welcome to Earth-2 | | 14 | Escape from Earth-2 | | 15 | King Shark | | 16 | Trajectory | | 17 | Flash Back | | 18 | Versus Zoom | | 19 | Back to Normal | | 20 | Rupture | | 21 | The Runaway Dinosaur | | 22 | Invincible | | 23 | The Race of His Life |

This episode count refers only to The Flash Season 2. It does not include crossover episodes from other shows (like Arrow Season 4, Episode 8, "Legends of Yesterday") which are part of the larger storyline but count as separate episodes on their respective series.

The Flash Season 2 contains a total of .

If you're planning to watch Season 2, budget time for 23 episodes . The season is widely considered one of the show's strongest, largely due to the menacing villain Zoom and the introduction of the multiverse, so you'll want to watch from start to finish without skipping.