Final answer:
A non-stop flight from Chicago to Seoul, South Korea takes longer due to the Earth's rotation and the influence of the jet stream.
Step-by-step explanation:
A non-stop flight from Chicago to Seoul, South Korea takes longer because of the Earth's rotation. The rotation of the Earth causes the flight to travel a longer distance when flying eastward compared to when flying westward. This is due to the fact that the Earth rotates from west to east.
Another factor that affects the duration of the flight is the jet stream. The jet stream is a high-speed air current that flows from west to east in the upper atmosphere. When flying from Chicago to Seoul, the flight is against the direction of the jet stream, resulting in a longer flight time.