Ever since CBS picked up Supergirl, there has been much speculation over whether it will cross over with any of Greg Berlanti’s other DC shows – Arrow, The Flash and DC’s Legends of Tomorrow, all of which are on The CW. While it is logistically possible – CBS co-owns The CW – the former network has been hesitant to have Kara Zor-El meet Green Arrow, Flash and company. Others involved with the show reaffirmed that, while a crossover isn’t entirely out of the question, it is not a priority right now.
Then there’s the question of where Supergirl fits into the Arrowverse timeline, if anywhere. None of the other shows have referenced Superman’s existence – save for that one line of dialogue in the Legends of Tomorrow trailer – and the Man of Steel is obviously a huge figure on Supergirl. However, The Flash introduced the Multiverse this season, so they could easily make Supergirl‘s world one of the infinite Earths. And a crossover can happen that way.
Now, a new rumor suggests that Supergirl will meet Flash, if everything goes according to plan. Bleeding Cool claims that Supergirl will meet up with The Flash and his S.T.A.R. Lab team by May’s sweeps week. This is assuming that CBS will order additional episodes for Supergirl; the show is currently ordered for 13 episodes, but the network can order an additional nine to bring the number up to 22. Additionally, CBS may think that Supergirl could use a boost in ratings, and a crossover with The Flash would certainly do that.
Of course, this is just a rumor for now, so take it with a pinch of salt until we hear official confirmation. Do you want to see a crossover between Supergirl and The Flash?