The Flash is set to conclude its theatrical run with a lower domestic box office revenue compared to the 2011 film Green Lantern. The superhero film has only earned $106.8 million domestically, falling short of Green Lantern's $166.6 million from a decade ago. Green Lantern, starring Ryan Reynolds, failed to meet expectations despite high anticipation from DC fans, collecting $219 million worldwide against a $200 million production budget. The Flash's global box office total currently stands at $263.6 million, surpassing Green Lantern's global earnings. 

The future of Ezra Miller's portrayal of the Scarlet Speedster remains uncertain.

Although reports suggest that a script for a Flash sequel has already been written, it is unlikely that Warner Bros. and DC Studios will proceed with another film due to the poor critical and commercial reception of the first. While details about the sequel's plot are unknown, director Andy Muschietti previously hinted that Reverse-Flash would be revealed as the murderer of Barry Allen's mother in The Flash. 

The Flash draws inspiration from the Flashpoint comic book storyline, following Barry Allen as he travels back in time to prevent his mother's death, inadvertently creating an alternate timeline without a Justice League and where General Zod has returned.

In a desperate attempt to rectify the situation, Barry must convince a retired Batman to join him and rescue an imprisoned Kryptonian.