Answer:
the displacement is the same as it would be if the airliner flew in a straight line to New York
Explanation:
Displacement of any object traveling on a path is the minimum distance between the initial and final point of the entire trip.
Here, the initial point is Chicago and the final point is New York. It the path the plane would take does not affect the distance. The minimum distance between Chicago and New York would be the displacement.
The minimum distance would be if the airliner flew in a straight line to New York which is the displacement.