Take for example a 13000km flight. Very few planes (777-200ER, 300ER, 747-400 and A340-500/600) can handle it with one flight.
My question is if it wouldn't be cheaper if a plane landed some 6000-7000 km into the flight and make a quick refuel (20minutes, something like formula 1) and takeoff again?
Since the plane would be lighter because it wouldn't need to carry all the fuel in one flight, it would also consume less and carry more payload. I know that when climbing the engines burn a lot of fuel, but on a 13000 km flight it would still use a less if you would make a short stop? And landing fees are not so high, that they would matter so much?