Here is an example of the types of losses you can have with an 8 hour charter with a fuel stop in a jet.

Operating costs for the trip were: $21,800
The passengers were charged: $64,800
Expected profit: $43,000

Sounds good right? But during the fuel stop, one of our flight computers failed. That computer was a $32,000 component. Besides reducing our profit, now we had to worry about our passengers who paid a lot of money being stuck half way to their destination. If you paid $64,800 for a product that only got you half way there, how happy do you think you would be?

We ended up having to hire another charter company to get them the rest of the way. That means not only did we lose money on that trip, but our passengers got there late and weren't happy with us. If we were a small company operating in the same area, we would not have been able to afford to lose that customer.