DC TV Universe: Viewing Order
Arrow
The Flash
Supergirl
Legends of Tomorrow
Constantine
Vixen
Blood Rush
Chronicles of Cisco
Year One
Arrow S01E02: Honor thy father
Arrow S01E03: Lone Gunmen
Arrow S01E04: An innocent man
Arrow S01E05: Damaged
Arrow S01E06: Legacies
Arrow S01E07: Muse of Fire Arrow S01E08: Vendetta
Arrow S01E09: Year’s end
Arrow S01E10: Burned
Arrow S01E11: Trust but verify
Arrow S01E12:Vertigo
Arrow S01E13: Betrayal
Arrow S01E14: The Odyssey
Arrow S01E15: Dodger
Arrow S01E16: Dead to Rights
Arrow S01E17: The Huntress Returns
Arrow S01E18: Salvation
Arrow S01E19: Unfinished Business
Arrow S01E20: Home Invasion
Arrow S01E21The Undertaking
Arrow S01E22: Darkness on the Edge of Town
Arrow S01E23: Sacrifice Year Two
Arrow S02E01: City of Heroes
Arrow S02E02: Identity
Arrow S02E03: Broken Dolls
Arrow S02E04: Crucible
Arrow S02E05: League of Assassins
Blood Rush S01E01: Mr. Queen is unavailable Blood Rush S01E02: Roy to the rescue
Blood Rush S01E03: Down the Rabbit Hole
Blood Rush S01E04: The sample
Blood Rush S01E05: Closing in
Blood Rush S01E06: Heroic Deeds
Arrow S02E06: Keep your enemies closer
Arrow S02E07: State v. Queen
Arrow S02E08: The Scientist
Arrow S02E09: Three Ghosts
Arrow S02E10: Blast Radius
Arrow S02E11: Blind spot
Arrow S02E12: Tremors
Arrow S02E13: Heir to the Demon
Arrow S02E14:Time of Death
Arrow S02E15: The Promise
Arrow S02E16: Suicide Squad
Arrow S02E17: Birds of Prey
Arrow S02E18: Deathstroke
Arrow S02E19: The Man under the hood
Arrow S02E20: Seeing red
Arrow S02E21: City of Blood
Arrow S02E22: The Streets of Fire
Arrow S02E23: Unthinkable Year Three
The Flash S01E01: Pilot
Arrow S03E01: The Calm
Arrow S03E02: Sara
The Flash S01E02: Fastest Man Alive
The Flash S01E03: Things you can’t outrun
Arrow S03E03: Corto Maltese
Arrow S03E04: The Magician
The Flash S01E04: Going Rogue
Arrow S03E05: The secret origin of Felicity Smoak
The Flash S01E05: Plastique
The Flash S01E06: The Flash is Born
The Flash S01E07: Power Outage
Arrow S03E06: Guilty
Arrow S03E07: Draw back your bow
The Flash S01E08: Flash vs. Arrow
Arrow S03E08: The Brave and the Bold
The Flash S01E09: The man in the yellow suit
Arrow S03E09: The Climb
The Flash S01E10: Revenge of the Rogues
Arrow S03E10: Left Behind
The Flash S01E11: The Sound and the Fury Arrow S03E11: Midnight City
The Flash S01E12: Crazy for you
Arrow S03E12: Uprising
The Flash S01E13: Nuclear Man
The Flash S01E14: Fallout
Arrow S03E13: Canaries
Arrow S03E14: The Return
Vixen S01E01
Vixen S01E02
Vixen S01E03
Vixen S01E04
Vixen S01E05
Vixen S01E06
Arrow S03E15: Nanda Parbat
Arrow S03E16: The Offer
The Flash S01E15: Out of Time
The Flash S01E16: Rogue Time
The Flash S01E17: Tricksters
The Flash S01E18: All Star Team Up
Arrow S03E17: Suicidal Tendencies
Arrow S03E18: Public Enemy
Arrow S03E19: Broken Arrow Arrow S03E20: The Fallen
The Flash S01E19: Who is Harrison Wells?
The Flash S01E20: The Trap
The Flash S01E21: Grodd lives
Arrow S03E21: Al Sah-him
Arrow S03E22: This is your sword
The Flash S01E22: Rogue Air
Arrow S03E23: My name is Oliver Queen
The Flash S01E23: Fast Enough
Constantine S01E01: Not Est Asylum
Constantine S01E02: The Darkness Beneath
Constantine S01E03: The Devil’s Vinyl
Constantine S01E04: A Feast of Friends
Constantine S01E05: Danse Vaudou
Constantine S01E06: The Rage of Caliban
Constantine S01E07: Blessed are the damned
Constantine S01E08: The Saint of Last Resorts
Constantine S01E09: The Saint of Last Resorts, Part 2
Constantine S01E10: Quid Pro Quo
Constantine S01E11: A whole world out there
Constantine S01E12: Angels and Ministers of Grace
Constantine S01E13: Waiting for the man Year Four
Supergirl S01E01: Pilot
Supergirl S01E02: Stronger Together
Supergirl S01E03: Fight of Flight
Arrow S04E01: Green Arrow
The Flash S02E01: The man who saved Central City
The Flash S02E02: Flash of two worlds
The Flash S02E03: Family of Rogues
The Flash S02E04: The fury of firestorm
The Flash S02E05: The Darkness and the Light
Arrow S04E02: The Candidate
Arrow S04E03: Restoration
Supergirl S01E04: How does she do it?
Arrow S04E04: Beyond Redemption
Arrow S04E05: Haunted
Arrow S04E06: Lost Souls
Supergirl S01E05: Livewire
The Flash S02E06: Enter Zoom
Arrow S04E07: Brotherhood
Supergirl S01E06: Red faced
Supergirl S01E07: Human for a day
Supergirl S01E08: Hostile takeover Supergirl S01E09: Blood Bonds
The Flash S02E07: Gorilla Warfare
The Flash 02E08: Legends of Today
Arrow S04E08: Legends of Yesterday
Vixen S02E01
Vixen S02E02
Vixen S02E03
Vixen S02E04
Vixen S02E05
Vixen S02E06
Arrow S04E09: Dark Waters
Arrow S04E10: Blood Depts
Supergirl S01E10: Childish things
The Flash S02E09: Running to stand still
The Flash S02E10: Potential energy
The Flash S02E11: The Reverse-Flash returns
Supergirl S01E11: Strange visitors from another planet
Supergirl S01E12: Bizarro
Supergirl S01E13: For the girl who has everything
Supergirl S01E14: Truth, justice and the American Way
Legends of Tomorrow S01E01: Pilot, Part 1
Legends of Tomorrow S01E02: Pilot, Part 2 Legends of Tomorrow S01E03: Blood Ties
Arrow S04E11: A.W.O.L.
Arrow S04E12: Unchained
Arrow S04E13: Sins of the father
The Flash S02E12: Fast lane
The Flash S02E13: Welcome to Earth-2
The Flash S02E14: Escape from Earth-2
The Flash S02E15: King Shark
Legends of Tomorrow S01E04: White Knights
Legends of Tomorrow S01E05: Fail-Safe
Legends of Tomorrow S01E06: Star City 2046
Arrow S04E14: Code of Silence
Arrow S04E15: Taken
Arrow S04E16: Broken Hearts
Legends of Tomorrow S01E07: Marooned
Legends of Tomorrow S01E08: Night of the Hawk
Legends of Tomorrow S01E09: Left Behind
Legends of Tomorrow S01E10: Progeny
The Flash S02E16: Trajectory
The Flash S02E17: Flash Back
Supergirl S01E15: Solitude
Supergirl S01E16: Falling Supergirl S01E17: Manhunter
Arrow S04E17: Beacon of Hope
Arrow S04E18: Eleven-Fifty-Nine
Arrow S04E19: Canary Cry
Chronicles of Cisco S01E01
Chronicles of Cisco S01E02
Chronicles of Cisco S01E03
Chronicles of Cisco S01E04
Supergirl S01E18: Worlds Finest
The Flash S02E18: Versus Zoom
Supergirl S01E19: Myriad
Supergirl S01E20: Better Angels
Supergirl S02E01: The Adventures of Supergirl
Legends of Tomorrow S01E11: The Magnificent Eight
Legends of Tomorrow S01E12: Last Refuge
The Flash S02E19: Back to normal
Supergirl S02E02: The Last Children of Krypton
Supergirl S02E03: Welcome to Earth
Legends of Tomorrow S01E13: Leviathan
Legends of Tomorrow S01E14: River of Time
Legends of Tomorrow S01E15: Destiny
Supergirl S02E04: Survivors Arrow S04E20: Genesis
Arrow S04E21: Monument Point
Arrow S04E22: Lost in the Flood
Supergirl S02E05: Crossfire
Legends of Tomorrow S01E16: Legendary
Arrow S04E23: Schism
The Flash S02E20: Rupture
The Flash S02E21: The Runaway Dinosaur
The Flash S02E22: Invincible
The Flash S02E23: The Race of his life Year Five
Supergirl S02E06: Changing
The Flash S03E01: Flashpoint
The Flash S03E02: Paradox
The Flash S03E03: Magenta
The Flash S03E04: The New Rogues
The Flash S03E05: Monster
The Flash S03E06: Shade
The Flash S03E07: Killer Frost
Supergirl S02E07: The Darkest Place
Arrow S05E01: Legacy
Arrow S05E02: The Recruits Legends of Tomorrow S02E01: Out of Time
Legends of Tomorrow S02E02: The Justice Society of America
Legends of Tomorrow S02E03: Shogun
Arrow S05E03: A Matter of Trust
Arrow S05E04: Penance
Arrow S05E05: Human Target
Legends of Tomorrow S02E04: Abominations
Arrow S05E06: So it Begins
Legends of Tomorrow S02E05: Compromised
Arrow S05E07: Vigilante
Legends of Tomorrow S02E06: Outlaw County
Supergirl S02E08: Medusa
The Flash S03E08: Invasion!
Arrow S05E08: Invasion!
Legends of Tomorrow S02E07: Invasion!
The Flash S03E09: The Present
Arrow S05E09: What we leave behind
Arrow S05E10: Who are You?
Legends of Tomorrow S02E08: The Chicago Way
Legends of Tomorrow S02E09: Raiders of the Lost Art
Legends of Tomorrow S02E10: The Legion of Doom
Legends of Tomorrow S02E11: Turncoat Supergirl S02E09: Supergirl Lives
The Flash S03E10: Borrowing Problems from the Future
Supergirl S02E10: We can be Heroes
The Flash S03E11: Dead or Alive
Arrow S05E11: Second Chances
Supergirl S02E11: The Martian Chronicles
The Flash S03E12: Untouchable
Arrow S05E12: Bratva
Supergirl S02E12: Luthors
Supergirl S02E13: Mr. & Mrs. Mxyzptlk
Supergirl S02E14: Homecoming
The Flash S03E13: Attack on Gorilla City
The Flash S03E14: Attack on Central City
Arrow S05E13: Spectre of the Gun
Legends of Tomorrow S02E12: Camelot/3000
Legends of Tomorrow S02E13: Land of the Lost
Arrow S05E14: The Sin-Eater
Arrow S05E15: Fighting Fire with Fire
Supergirl S02E15: Exodus
The Flash S03E15: The Wrath of Savitar
The Flash S03E16: Into the Speed Force
Legends of Tomorrow S02E14: Moonshot Arrow S05E16: Checkmate
Supergirl S02E16: Star-Crossed
The Flash S03E17: Duet
Legends of Tomorrow S02E15: Fellowship of the Spear
Arrow S05E17: Kapiushon
Arrow S05E18: Disbanded
Supergirl S02E17: Distant Sun
The Flash S03E18: Abra Kadabra
The Flash S03E19: The Once and Future Flash
The Flash S03E20: I Know Who You Are
The Flash S03E21: Cause and Effect
The Flash S03E22: Infantino Street
The Flash S03E23: Finish Line
Arrow S05E19: Dangerous Liaisons
Arrow S05E20: Underneath
Legends of Tomorrow S02E16: Doomworld
Legends of Tomorrow S02E17: Aruba
Supergirl S02E18: Ace Reporter
Supergirl S02E19: Alex
Supergirl S02E20: City of the Lost Children
Supergirl S02E21: Resist Supergirl S02E22: Nevertheless, She Persisted
Arrow S05E21: Honor Thy Fathers
Arrow S05E22: Missing
Arrow S05E23: Lian Yu Year Six
Upcoming: Arrow Season 6 The Flash Season 4 Legends of Tomorrow Season 3 Supergirl Season 3 Freedom Fighters: The Ray Crossover: Crisis on Earth-X (Supergirl, Arrow, The Flash, Legends of Tomorrow)
source: http://www.imdb.com/list/ls074499769/ with input from http://www.denofgeek.com/us/tv/dc-entertainment/258665/a-dc-tv-universe-timeline-guide-arrow- the-flash-supergirl-legends-of-tomorrow http://forums.superherohype.com/showthread.php?t=513473