If you’re flexible both on when you fly and where you fly, you’ll likely get the best deals, says Trance. Call the company and ask about the cost differences between, say, a Saturday and a Tuesday and see if you can fly into a nearby airport. Fridays and Sundays tend to be the most expensive times to travel, says Justin Sullivan, the co-founder of FLITE Air Taxi. And, of course, last-minute deals can be significant so it may be worth waiting until about 72 hours before you want to fly to find deals, says Trance, though this is, of course, risky.
Though the early Lockheed Jetstar had four, most production business jets have two jet engines, mostly rear-mounted podded engine. If mounted below their low wing, it wouldn't allow sufficient engine clearance without a too long landing gear. The HondaJet is the exception with its over the wing engine pods. Dassault Falcon still builds three-engine models derived from the Falcon 50, and the very light jet market has seen several single-engine design concepts and the introduction of the Cirrus Vision SF50 in 2016.