The choice between an empty leg flight and an on-demand charter is the single most consequential decision in how you structure your private aviation access. It determines the cost you pay, the flexibility you need to bring, the planning timeline that applies, and the experience you can expect when you arrive at the private terminal. Getting this decision right consistently saves thousands of dollars per trip.
This article gives you the complete framework for making this decision correctly every time, structured as a direct comparison across every dimension that matters.
An empty leg flight is a private jet that needs to fly from one location to another to reposition for its next booking, offered to travelers at a discount because the operator's fixed costs for the flight are already committed. The route, the departure airport, the destination airport, and the general departure timing are all determined by the original charter that created the repositioning need. You are adapting your travel to fit the available flight.
An on-demand charter is a private jet flight designed around your specific requirements. You specify the departure airport, the destination, the departure time, the aircraft type, and any other parameters that matter to your trip. The operator sources an appropriate aircraft and builds the flight around your needs. You are designing the flight to fit your travel rather than the reverse.
On the cost dimension, empty legs win clearly and consistently. The pricing discount on a genuine empty leg compared to a standard on-demand charter for equivalent aircraft on equivalent routes runs 40 to 75 percent. On the New York to Miami corridor, a midsize jet on-demand charter costs $12,000 to $18,000. The same corridor on an available midsize jet empty leg costs $5,500 to $9,000. The pricing guide at CharterBlast shows current market benchmarks for both products across all major aircraft categories and route types.
The cost advantage of empty legs is not marginal. For a traveler who makes eight private flights per year and can capture empty leg pricing on four of them, the annual savings compared to all eight trips at standard on-demand charter rates can exceed $30,000 to $50,000 depending on the routes involved.
On the flexibility dimension, on-demand charter wins without contest. When you book an on-demand charter, you specify what you need and the operator builds the flight around it. Your departure airport, your destination, your departure time, your aircraft preference, your catering requirements, and your ground coordination needs are all addressed as part of the booking process.
With an empty leg, you work within constraints that were set by someone else's original booking. The departure airport may not be your preferred facility. The destination airport may require additional ground transit to your final destination. The departure time window may not be exactly when you would choose to travel. Accepting these constraints in exchange for the pricing discount is the fundamental trade-off of empty leg travel.
On-demand charter, once confirmed by a certified operator, is a reliable booking. Empty legs have an additional reliability risk: the original booking that created the empty leg can change, causing the empty leg to disappear. If the inbound charter client modifies their trip, the dependent empty leg may be cancelled. This is not a frequent occurrence but it is a real risk, particularly for trips where the arrival timing at the destination is genuinely critical.
Choose an empty leg when your travel has flexibility on departure timing within a window of at least 24 hours, when you are not locked into a specific departure or arrival airport, and when the cost saving of 40 to 75 percent is meaningful relative to the flexibility trade-off. The step-by-step guide to booking empty legs covers how to evaluate a specific available leg against your requirements efficiently.
Choose on-demand charter when the departure timing is fixed and non-negotiable, when the specific departure or arrival airport matters to the total logistics of the trip, or when an available empty leg simply does not exist for the route and timing you need. A direct quote for any on-demand route takes under two minutes to submit and typically produces aircraft options within a few hours.
The travelers who manage their private aviation costs most effectively do not choose exclusively between empty legs and on-demand charter. They use both tools, optimizing the choice for each specific trip based on the flexibility that trip allows. For the quarterly board meeting in Chicago where the exact departure timing matters, they book on-demand charter. For the leisure weekend in Miami where they could leave Friday, Saturday, or Sunday morning and be equally happy, they monitor empty leg availability and book the best leg that appears within that window.