Despite vast improvements in technology and a growing global demand for flights, air travel over the last few decades only seems to have become more miserable. All too often flying today means enduring never-ending security lines, intrusive body checks or x-ray machines, cramped seats, long layovers, missed connections, delays, and cancellations. And we haven't even touched upon the dingy, outdated seat fabrics, asinine luggage policies, or measly snacks.

And yet for a small and growing percentage of people, flying is actually improving. Cushy seats, quasi-gourmet snacks, and a brief respite from the crushing masses are available on any of 39,000 private aircraft worldwide, and in the U.S., several private jet companies are now offering flights at prices that equal first- and business-class tickets on commercial airlines.

While Linear Air has been around since 2004 and JetSuite launched SuiteDeals in April 2011, there are three new companies less than six months old: JumpSeat took flight in February, Surf Air in June, and FlyArrow is planning to start flights next month.

Whether for business or pleasure, now's the time to check out your new and improved options—before everyone else catches on.