Originally Posted by
MSPeconomist
Remember that shorter segments can cost more per mile to operate, in additional to the fixed costs of processing each passenger.
True but GRR/AZO-DTW-MSP or GRR/AZO-DTW-STL can't be all that much in additional cost. He's even been driving to DTW a lot trying to cut costs but that makes little difference. Hub to Hub should be the lowest costs for an airline but yet they seem to have the highest fares.