The CW has announced the dates of this year’s crossover event, and The Flash and Supergirl will be switching time periods. The crossover event, which will also introduce Batwoman, will begin with The Flash on December 9th, then will continue with Arrow on December 10th, and will conclude with Supergirl on December 11th. Notably, Legends of Tomorrow won’t be part of the crossover this time.
The CW’s 3-night crossover event featuring #TheFlash, #Arrow, and #Supergirl begins December 9! pic.twitter.com/0HnMz1tqgG
— The Flash (@CW_TheFlash) August 21, 2018