“Mixed emotions when sitting on a plane” can describe the various feelings that a person may experience when sitting on a plane, including excitement, anxiety, anticipation, curiosity, relaxation, or fatigue. Some people may enjoy the feeling of takeoff and closing, while others may be afraid of flying. Feelings of tiredness or boredom can also occur on long flights. In summary, “mixed emotions when sitting on a plane” often depends on the individual and specific circumstances.