By The Flash series finale, the Arrowverse drama will tackle a surprising remaining plot point that has been with the show since season 1. While Arrow kicked off the Arrowverse in 2012, The Flash will be the series to outlive its progenitor. The Flash started as Arrow's first spinoff show that, in turn, helped build out the larger Arrowverse, which featured several offshoots like Supergirl, Legends of Tomorrow, Batwoman, and many more. Arrow, which starred Stephen Amell as Oliver Queen, came to an end in 2020 after eight seasons and a total of 170 episodes. However, The Flash season 8 will officially surpass it with its upcoming season finale, which serves as the show's 171st episode.
While it's unclear when The Flash will come to an end, the Arrow spinoff has at least one more year, as The CW renewed it for season 9 back in March. However, the network is saving The Flash season 9 for midseason 2023, alongside Superman & Lois season 3 and the newest DC TV show, Gotham Knights. So far, The CW and Warner Bros. TV have officially not made a decision yet if season 9 will serve as the final season or if they may push for The Flash season 10. It will all come down to story pitches and actor availability in the end.
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Regardless of when The Flash series finale will take place, however, there is one unresolved plotline that will be dealt with by the end of the show. During TVLine's latest edition of Inside Line, a fan asked if The Flash ever plans to actually finish their repairs on STAR Labs, which is where Team Flash mainly operates. Fittingly enough, TVLine had an answer from showrunner Eric Wallace, as this was something they wanted to know too.
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