+1 The "authors" were sloppy. I might add that this type of analysis (only looking at mainline) is basically useless. If goal is to look at revenue and costs, excluding RJ - which goes directly to the bottom line - is only seeing 1/2 the picture, and given how UA is so much more relient on RJs than some airlines, and some airlines (ok, about 2/3) don't have RJs at all, they have set up an apples to mixed fruit comparison.

The authors draw some conclusions which are - because they were unable to copy data correctly from press releases - just wrong.

For anyone interested in looking further, the MIT data for 2014 gives a full year snap shot.