Figure $2/mile for fuel on a long trip, $3/mi on a shorter hop. Jet-A ranges from $2.75/gal to $5/gal typically (with some outlier airports being higher). Fuel is heavy and hurts performance, so it’s rare to tanker significant quantities of “cheap” fuel.
Those figures are roughly right for a legacy Citation with JT15s. Bigger jets might be more. Newer jets might be more fuel efficient (and correspondingly more expensive to buy). A legacy Citation is a 50-150 hour/yr airplane. Fly it much more than that and you'd be better off in a newer Citation with the FJ44s (more expensive engines, much better fuel specifics).
Looking at our FBO here, Jet-A is ~$5.80/gal and 100LL is ~$5.50/gal
Cost per hour, per passenger is μ=$320.28, σ=$67.45, assuming the plane is full.
https://www.aopa.org/news-and-media/all-news/2015/november/1...
The majority of HN are from the US/the anglosphere/wealthy western nations. A large percentage of HN are in a profession that pays above average (engineering). A smaller but I guess not insignificant percentage are investors. HN is in no way representative of the general population.
But it takes a lot of money to buy a jet. I would not be too sure that the very top of the global wealth scale is well-represented here, either. Dicking around on a web forum seems like a waste of time for someone with the means to live the life they want.
>A large percentage of HN are in a profession that pays above average (engineering)
Not related. Even if you're a director at Google pulling 1m a year in, you're not buying a private jet. Or, you're not unless you're reckless.
The reason HN would have a far higher audience of people who own or have access to private jets is because a bunch of tech entrepreneurs who've really made it, such as the Collisons and Drew Houston, have come through here on their ascension and some of whom are still around.
How many of them do you think browse Hacker News?
[0]: https://www.worldbank.org/en/news/press-release/2018/10/17/n...