Flash Reading Order

Flash Timeline
Death of Nora Allen

Flash Year One
Justice League Origin
 * 1) "Born to Run"
 * 2) "Fastest Man Alive"
 * 3) "Rogues"
 * 4) "Through the Looking Glass"
 * 5) "Finish Line"

Justice League Year One

Scarlet Speedster
Teen Titans
 * 1) "Lightning Strikes Twice"
 * 2) "Acceleration"
 * 3) "Gorilla Warfare"
 * 4) "Emergency Stop"
 * 5) "Speed of Thought"

Paradise Lost

Justice League of America

Tower of Babel

Apokolips Now

JLA

Flash of Two Worlds

 * 1) "Golden Age"
 * 2) "Crisis on Earth 2"
 * 3) "Reverse"
 * 4) "Flash Back"
 * 5) "Speed Force"

Crisis on Infinite Earths

 * 1) "Monitor"
 * 2) "Destroyer"
 * 3) "Qward"
 * 4) "Oblivion"
 * 5) "Genesis"
 * 6) "New Earth"

Terminal Velocity
Reign of the Supermen
 * 1) "Ignition"
 * 2) "Mirror, Mirror"
 * 3) "Iron Heights"
 * 4) "The Human Race"
 * 5) "Black Flash"

Emerald Twilight

Secret Invasion
Justice League Year Five
 * 1) "Happy New Year"
 * 2) "Diplomatic Endeavors"
 * 3) "True Colors"
 * 4) "Intervention"
 * 5) "Scarab"

Return of Zoom

 * 1) "Flash Forward"
 * 2) "Escape from the 24th Century"
 * 3) "Zoom"
 * 4) "Running Scared"
 * 5) "Shockwave"

Final Crisis

 * "Twilight"
 * 1) "Godfall"
 * 2) "Godspeed"
 * 3) "Submit"
 * 4) "Resist"
 * 5) "Omega"
 * 6) "The Abyss"
 * "Dawn"

Blitz

 * 1) "Hot Pursuit"
 * 2) "Trial of Barry Allen"
 * 3) "Rogue War"
 * 4) "Lightspeed"
 * 5) "Flash War"

Flashpoint

 * 1) "A Better World"
 * 2) "Paradox"
 * 3) "Last Will & Testament of Barry Allen"
 * 4) "Revenant"
 * 5) "Death and the Flash"

Zero Hour
Blackest Night
 * 1) "Out of Time"
 * 2) "Future Tense"
 * 3) "Supernova"
 * 4) "Parasite"
 * 5) "Vanishing Point"

Return of Bruce Wayne