The seventh season of the American ABC fantasy-drama Once Upon a Time was ordered on May 11, 2017. It consisted of 22 episodes, airing on Fridays, having premiered on October 6, 2017.

Based on this passage, how many episodes in series 7 of once upon a time? Let's think fast. Stream of consciousness:
The relevant sentence in the passage is: It consisted of 22 episodes, airing on Fridays, having premiered on October 6, 2017. So the final answer is 22.