If "Go" was the escape, "Flight" is the aftermath. This season finale shifted the show's DNA from a locked-room mystery to a fugitive chase. The image of the "Fox River Eight" running through a field as the plane takes off without them remains one of the most iconic cliffhangers in TV history. It raised the stakes from escaping a building to surviving an entire country.
The Fox River Eight begin their escape through Michael's cell. Flight 9.4 The Season 1 finale where the escapees run for the plane. 3 Riots, Drills and the Devil: Part 1 9.3 prison break episode best