If it is the only direct service then yes the load will be high but I suspect the yield is not that great. Remember these are small planes that are operated on these frequencies. If it can take a 767 then this would probably make it more worthwhile maintaining.....
It
is the only direct service & the yield
is high. Flight prices in Economy are in the £1000-£2000 range. What are small planes? I would hardly call the A330 small.. The yield on the Freetown route