Originally Posted by skywatch

Problem is, a better analogy would be "why pay my son $20 per week when I could pay the neighbor $10 a week to do the same job..." That is a better representation of the issue Delta has...that being said, I agree that you should keep as much in house as you can, because there are advantages to that beyond simple cost per block hour, much like there are long term advantages to paying your own son, even if it cheaper to pay the neighbor in the short term.

But the point of my post is to point out that your analogy is inaccurate.