When flying by private jet, one noticeable difference from flying in a commercial airliner is a lack of headroom. The height of the cabin in the aisle of a Boeing 737 is about 7 feet, 2 inches. The average height of a man is 5 feet, 9 inches while a woman is 5 feet, 4 inches. Out of 112 business jets Private Jet Card Comparisons analyzed, 67 had a height where the average man would need to duck with 37 private jets being the same for women.