Initially conceived as a backdoor pilot, the positive reception Gustin received during two appearances as Barry on Arrow led executives to choose to develop a complete pilot, with a larger budget and to help deepen Barry's world in more detail. The series is filmed mainly in Vancouver, British Columbia, Canada.
The series was made official in the first half of 2014, with an order of 23 episodes for the first season, which premiered on October 7, 2014. The second season was released on October 6, 2015 and the third season was released on October 4, 2014. October 2016.