The Flashs Barry Allen is heading to National City!
Details on the episode are being kept under wraps.
Theres also no word yet on whether Melissa Benoist will return the favor and appear onThe Flash.

Credit: The CW
Therefore, the possibility for a future crossover withArrowisnt improbable its just not happening right now.
saidThe FlashandSupergirlexecutive producers Greg Berlanti and Andrew Kreisberg.
And finally thanks to the fans and journalists who have kept asking for this to happen.
It is our pleasure and hope to create an episode worthy of everyones enthusiasm and support.
It would have to figured out very soon.
It would all have to be figured out in the next month or so.
[The CW chief Mark Pedowitz] is supportive.
Supergirlairs Mondays at 8 p.m.
ET on CBS, whileThe Flashairs Tuesdays at 8 p.m.
ET on The CW.