TERRIBLE. Idris is the only positive to this-- besides him, you'll just be left confused and feeling like you wasted your time. Too many characters and no development or progression to the story at ALL. The most random assembly of hijackers with no plan WHATSOEVER. This had potential and never took off (ha ha). BOO APPLE TV.
Hire me instead:
They could have titled each episode as a count down leading up to the flight or each hour of the flight- literally ANY progressing linear storytelling. Perhaps starting the series with WHY the hijack was going to happen, the flight it had to happen on, and then continue with PROGRESSION to the story in learning the key characters involvement in the hijacking/Idris's background prior to the hijack. Key things that COULD have made this series decent.
Episode 1: Take off
Episode 2: Hour 5
Episode 3: Hour 4
Episode 4: Hour 3
Episode 5: Hour 2
Episode 6: The last hour *ends not knowing if the plane lands or crashes*
Episode 7: Say Cheese