when the oil price increase which will have high impact either long haul aircraft or short haul. I mean which kind of aircraft keeps the airliner profitable. Though the increase in oil price will have an impact on both kind of aircraft.
Basically, long haul aircraft have one take-off and landing, whereas the short haul will have more number of take-off's and landings. So, relatively short haul is quite expensive and brings less profits to the airliner.