Somewhere between a third and 40 percent of all private jet flight hours are flown with nobody in the back. Industry survey data — the figure comes up consistently in NBAA member research and Avinode market analysis — puts repositioning at roughly 30–40% of total flight hours, and it has stayed in that band for years. Every one of those flights is an aircraft burning fuel, crew duty time, and maintenance cycles to get from where its last trip ended to where its next one starts.
That inefficiency is where empty leg flights come from, and it is why they are the most asked-about discount in private aviation. It is also why they are the most misunderstood. We book empty legs for clients when they genuinely fit — and we talk clients out of them regularly, because an empty leg that does not fit your trip is not a discount, it is a different product. Here is how they actually work.
Why So Many Jets Fly Empty
Charter is largely a one-way business flown by aircraft that live somewhere. A jet based in San Diego takes a client to Aspen; the client stays a week. The operator is not going to park a multimillion-dollar aircraft on a ramp in the Rockies waiting, so it flies home empty — or flies empty to wherever the next paying trip begins. Multiply that across the fleet and you get the repositioning share above.
The volume is not small. WINGX counted nearly 947,000 business jet departures worldwide this past summer alone — up about 2.3% on summer 2025 and some 35% above the same stretch of 2019 — with North America flying over 71% of global activity. Apply even the low end of the repositioning estimate to that and you are looking at hundreds of thousands of empty flights a year. Operators would rather collect something for those hours than nothing, so they publish them: this aircraft, this day, this city pair, discounted.
What an Empty Leg Actually Is — and What It Isn’t
A true empty leg is the byproduct of someone else’s trip. That one fact drives everything about how it behaves:
- The routing is fixed. The aircraft is going from A to B because a paying client put it there. You can sometimes negotiate a departure time within a window, occasionally a nearby airport, but the city pair is the city pair.
- The schedule belongs to the original trip. If the client who booked the revenue flight moves their departure by a day, the empty leg moves with it. If they cancel, the empty leg evaporates. You inherit their changes with no say in them.
- The aircraft is what it is. You are not choosing a cabin class for your mission. If the jet repositioning past your route is a light jet and you have six passengers and skis, it is not your flight.
That is a true empty leg. What gets advertised online is often something looser — “one-way pricing,” where an operator quotes a reduced rate on a route where it knows backhaul demand exists, or speculative listings that are closer to marketing than inventory. One-way pricing is a legitimate and useful product; it books like a normal charter with normal guarantees. But it is not the same thing as a 50%-off empty leg, and plenty of advertising blurs the two. Part of our job as a broker is telling you which one you are actually looking at.
What the Discount Really Looks Like
Operators typically price empty legs as a percentage of their standard charter rate, and discounts run up to around half off — the operator’s goal is offsetting the cost of a flight it was going to fly anyway, not maximizing revenue. On the right trip, that is real money: a transcontinental heavy-jet leg at half rate is a saving measured in tens of thousands of dollars.
But price the whole trip, not the leg. An empty leg is one direction. If you need to come back, the return is a regular charter — and if the empty leg took you somewhere with thin aircraft supply, that return may price high enough to eat the saving. Federal excise tax and segment fees still apply. And a “cheap” leg that departs two days before you wanted to leave has a cost too; it is just paid in hotel nights and schedule disruption instead of dollars.
The Fine Print That Matters Most: Cancellation Risk
This is the part we make sure every client hears before they book. Because the empty leg exists only in service of the original revenue trip, most empty leg contracts give you weaker protection than a standard charter. If the aircraft breaks, many operators will simply refund you rather than recover you — sourcing a replacement jet is an expense the discounted fare never priced in. If the original client reroutes, same outcome.
So the honest framing is this: an empty leg is a probability, not a guarantee. For a flexible trip — repositioning yourself to a second home, a leisure trip where the dates can float, trying out a cabin class before committing to regular charter — that probability is a fine trade for the price. For a wedding, a board meeting, a cruise departure, or anything with a hard right-hand side on the calendar, it is the wrong instrument, and we will tell you so. Clients who must move on a schedule book charter; clients who can move when the market moves book empty legs.
Where Empty Legs Come From in Q4
Empty leg supply is not steady — it clusters wherever one-way demand clusters, which makes the holiday season the richest hunting ground of the year. Thanksgiving and the late-December peak generate waves of one-directional traffic into Florida, the Caribbean, and mountain markets, and every one of those revenue flights throws off a repositioning leg on the other side. If you have ever wanted to experiment with an empty leg, the weeks around the holidays are when the board fills up — with the caveat that holiday legs are attached to the most change-prone trips of the year, so the volatility rises right along with the supply.
The same logic, incidentally, applies to cargo. When we quote time-critical freight, aircraft already repositioning in the right direction are one of the levers we pull to compress cost and wheels-up time. The economics of an empty airplane do not care whether the payload is passengers or parts.
How We Work Them
We sit across a network of 500+ vetted Part 135 operators, which means we see empty leg availability at a scale no single operator’s list can match. When a client asks about a route, we check live repositioning inventory alongside standard one-way pricing and present both — with a straight answer about the protections attached to each. Sometimes the empty leg wins. Sometimes one-way pricing on a floating-fleet operator gets within 15% of the empty leg with none of the cancellation exposure, and that is the better buy. The point of using a broker is not finding the cheapest number; it is knowing what the number does and does not include.
A few things we tell every empty leg client: confirm in writing what happens if the leg cancels, know your total trip cost including the return, and keep a backup plan proportional to how much the trip matters. Do that, and empty legs are one of the genuinely good deals in private aviation.
Flexible on Timing? Let’s Find You a Flight
Tell us your route and your date range, and we will check empty leg and one-way availability across our operator network — and give you an honest read on which one fits your trip. Our desk is staffed 24/7/365. Call (858) 529-7860 or email quotes@onflyair.com.