Let’s say a business is chartering a jet to go from NYC to Las Vegas, but is only filling 4 of the available 8 seats…
Or, a company that owns their own private jet is doing the same thing.
Is there a service that lists and sells these empty seats so they don’t go unused?
A can’t answer your question other than to say that normally people chartering a jet are paying a heck of a lot of money for the luxury of not having unknown people sitting next to them.
Sometimes people might charter an aircraft to go somewhere and if they’d like extra people to help with costs they’ll advertise in a newspaper.
I have heard that, post 9-11, the security hassles of taking extra people not previously known to you on board your chartered aircraft are considerable, and may make the idea impractical.
This may not be what you are looking for but the Corporate Angel Network finds empty seats on corporate planes so that cancer patients can be taken to treatments for free. I just thought that was a nice thing to know.