121 pilots pay for nothing on trips, for the most part (one exception is starting a trip somewhere besides your domicile, which my company doesn't do, but I know some do).
You non-rev to work for free, your hotels are free, your van rides are free, you get M&IE every hour you are out of domicile. You cannot claim lodging expenses, van tips, food, because it's all either paid for by the company, or covered by M&IE.
Originally Posted by
tattooguy21
Military flyers use it all the time on cross country trips. Our per diem works a little different. Aside from that, I have no idea how it works for civil aviators. Maybe if they're going cross country. I know it has fuel cost in there too