Originally Posted by adamj023

Delta likely wants to keep flights sold out since it maximizes revenue for them. More people fighting over less seats means higher profit and they can get higher prices on those flights.

If you have 2X the customers who want to fly, and say the flight is full with business class AND Economy passengers, adding another flight will lead to decreasing revenues and devalue the net profit.

Additional or larger plane flights will occur at times if it actually would lead to higher sales of premium fares

I am more than sure they use load calculations to figure these out.

non-stop American Airlines 1% $52.03 $156.97 $551.95

American has the cheapest fares on the route and empty space.

non-stop Midwest Airlines 29% $50.04 $180.55 $1,009.03
non-stop Delta
(operated by Comair)
20% $63.54 $171.47 $868.77
non-stop Delta
(operated by Mesaba)
11% $75.05 $179.44 $1,228.88

Delta has essentially the marketshare on this route with multiple regionals.

Midwest Airlines is now Frontier. If you need cheap on this route, use AA if it meets your schedule, and if not, Delta with a regional or Midwest and

Delta's pricing seems to be coming in at below Frontier with Comair regionals.

But kudos to Delta for effectively managing this route.