And using smaller airframes (because you can run smaller/lighter fuel tanks, along with lower drag) can add to those efficiency gains: > the total fuel consump

And using smaller airframes (because you can run smaller/lighter fuel tanks, along with lower drag) can add to those efficiency gains: > the total fuel consumption of a 7,200 NM flight can be reduced by up to 15% by making an intermediate stop half way, while using conventional existing long-haul aircraft. When the aircraft is specifically designed for medium-range operations (such as e.g. the Airbus A300), the total fuel savings could increase to 27%. From: "Evaluation of intermediate stop operations in long-haul flights" NYC to Delhi is at 6400 NM.