Fuel burn is not everything but its a factor......
Fuel/pax/nm (kg)
0.0791-RJ70
0.0684-B717-200
0.0662-RJ85
0.0604-F100
0.0582-RJ100
0.0575-B742
0.0500-B744
0.0480-B737-700
0.0472-B763ER
0.0470-A333
0.0465-B738
0.0460-A332
0.0443-A320
0.0395-B734
0.0341-B733
0.0305-B762