Flight prices aren’t as cheap as they used to be anymore. In fact, if you’re about to fly your family and friends of 5-7 people somewhere, you might consider picking up a private jet. It might actually be in the same ballpark for price.
How much? Charter companies like XO specialize in these sorts of chartered trips. If you have flexibility, they sometimes even offer discounts and special deals for one-way trips to get their planes back/to the next pickup.
Here’s a list of recent prices