Regional short haul flight segments are expensive and the airlines are running from them. This will only get worse not better.

Here is some airline 101 from AA latest disclosure:

"First quarter mainline cost per available seat mile (CASM) was 11.58 cents, down 9.5 percent on a 3.1 percent increase in mainline ASMs versus the first quarter 2015. Excluding special items and fuel, mainline CASM was 9.62 cents, up 1.4 percent compared to the first quarter 2015. Regional CASM excluding net special items and fuel was 16.11 cents, down 2.2 percent on an 8.1 percent increase in regional ASMs versus the first quarter 2015."