Yes on March 28, 2016, The Flash will be crossing over to Supergirl’s TV show. I’m so stoked about this! I love both shows and I love that they can make a crossover happen. Constantine crossed over to the Arrow show earlier in the season, so seeing Supergirl also show up is just awesome! If you’re not watching either show, you are missing out. Both are incredibly well written and I can not wait to see this happen.
The executive producers of the shows (Greg Berlanti and Andrew Kreisberg) stated:
We are so incredibly excited to announce something that we have dreamed of happening since we starting making Supergirl – The Flash and Supergirl are teaming up! We want to thank Grant Gustin for making the time to come visit and all of the folks at CBS, The CW, Warner Bros. and DC for working this out. 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 everyone’s enthusiasm and support.”