10-Key & Warbird,
Owning a business seems to make sense regarding deductibility as it ties you to a location and forces a commute. In other cases place of residence is a choice.
Besides being a pilot, I'm a realtor and a national real estate consultant. I would consider the flying to be my primary job. Would this make commuting deductible in my case?
I strongly encourage every pilot and high income person to start some sort of business; it's the only way to mitigate the damage on taxes. Pick something you truly enjoy. If possible convert an interest ("hobby" is an IRS bad word) into a real business; something that makes a little money anyway.
In my case I have given free real estate assistance nationwide for over 10 years. One of my specialities is waterfront. It's nice when the business subsidizes a Grady White, a skiff, part of the mortgage, gas, office supplies, cameras, computers, food & booze for client BBQs and dinner parties, etc. I have a lot friends and family that happen to be clients. Hmmmm.