Quick answer
Flexible empty leg flights are the ones that actually happen: the operator fixes an empty leg's route, date and time, so your flexibility is what makes a match. Being able to travel on any of several days, and from more than one nearby airport, matters most. You can't reserve a leg before it exists, but a route alert tells you when a matching one appears so you can book quickly.
Key takeaways
- An empty leg's route, date and time are set by the operator; your flexibility is what creates a match.
- The date window and the airport radius are the two levers that matter most.
- Use an empty leg for the direction that can move, and something reliable for the one that can't.
- You can't reserve a leg before it exists, but a route alert emails you when a match appears.
- Keep a fallback and avoid tight connections: some legs are cancelled or rescheduled.
- Flexible empty legs suit groups with loose plans, not fixed-date events or unusual routes.
Why flexible empty leg flights are the only kind that work
An empty leg is a repositioning flight: a jet flying home or on to its next job after a one-way charter, sold at a discount rather than flown with nobody aboard. Because it exists only as a by-product of someone else's booking, its route, date and time are set before you ever see it. You can't move it. You can only fit around it. Our cornerstone guide, what is an empty leg flight, covers how operators create them.
That is why the phrase "flexible empty leg flights" is almost a tautology. A traveller with a fixed route, a fixed date and a fixed hour is asking for a charter, not an empty leg, and will usually be disappointed. A traveller who can bend on the day, the airport or the time of departure is eligible for far more of the supply, and that is the whole difference between people who fly empty legs regularly and people who decide they don't exist.
This guide is about how to plan for that: how much flexibility you actually need, where it matters most, how to reserve an empty leg with a flexible schedule when the leg doesn't exist yet, and when flexibility isn't worth it. For the mechanics of searching, see how to find empty legs.
How much flexibility do you need?
Less than most people fear, but more than none. The two levers that do the heavy lifting are the date window and the airport radius.
The date window
A leg that is wrong by a single day is still a no. Every extra day you can accept on either side of your ideal date adds the legs that fall on that day. Being able to travel on any of three or four days, rather than one, is the single biggest change you can make. If you can only move by half a day, that still helps: a morning leg and an evening leg on the same day are different flights.
The airport radius
Think of your departure and destination as regions, not points. London has several business-aviation airports, which our guide to London private jet airports covers. A trip you think of as "Nice" (see private jet hire Nice) might be served by a leg into Cannes-Mandelieu or Saint-Tropez instead. Each extra airport you accept at each end multiplies the number of legs that could match.
The time of day
The operator sets the departure time around its next job. Being open to an early start or a late arrival rounds out the picture. It matters less than the day or the airport, but it does rule some legs in or out.
| Lever | What it means in practice | How much it widens your options |
|---|---|---|
| Date window | Accepting any of several days, not one | The biggest single lever |
| Airport radius | Treating a city or coast as a region with several airports | Large, especially around London and the Riviera |
| Direction | Travelling with the seasonal flow of aircraft | Large in ski and summer seasons |
| Time of day | Accepting early or late departures | Modest, but it rules legs in |
| Destination | Being open to more than one place | Useful for leisure trips; irrelevant for fixed plans |
How to plan a trip around an empty leg
The practical way to use flexibility is to build the trip around the part that can move, and protect the part that can't.
- Decide what is fixed. A wedding, a meeting, a check-in date. Everything else is negotiable.
- Put the flexibility on the leg that can move. Often the outbound has to land by a certain day, but the return is open, or the other way round. Use an empty leg for the open one.
- Set your window and your airports. Write down the earliest and latest days you'd travel, and every airport within a reasonable drive at each end.
- Arrange to be told. Legs tend to list a few days to a few weeks before departure, often only 24–72 hours ahead, and sell fast. You won't catch them by checking once. Set an alert (more on that below).
- Be ready to book. Have passenger names, passport details and payment ready. On the busiest corridors a good leg can be gone within hours.
- Keep a fallback. Know what you'll do if no leg appears in your window: a scheduled flight, a one-way charter (our guide to one-way charter vs empty leg compares the two), or a different date.
This is the same reasoning behind using an empty leg for one direction and something else for the other. If you need both directions covered, our guide to the empty leg return flight looks at how that works in practice.
See what's flying on your route now, and what a charter would cost if your dates are fixed.
Check a price →Reserving an empty leg with a flexible schedule
This is the question we're asked most often, and the honest answer has two parts.
You can't reserve a leg that doesn't exist yet. Most empty legs only appear once the operator has confirmed the charter that creates them, which is usually days or weeks before departure. There is no list of next month's legs to book from, and anyone offering one is usually selling a membership, not a flight.
You can reserve your place in the queue. What you can do is register the route you want and be told the moment a matching leg appears. That is what a route alert does: you tell us the route, we email you when a matching leg appears on the live feed, and you decide whether to take it. Because the alert covers the route rather than a single date, it suits a flexible schedule well: every match lands in your inbox and you choose the one that fits your window. We cover how alerts work, and why they matter, in empty leg alerts.
Once a leg that fits appears, the booking itself is quick: request a confirmed quote, check the terms, pay. There is no deposit just to look, and you only commit once you accept the confirmed price.
A flexible traveller's routine, step by step
People who fly flexible empty leg flights regularly tend to settle into the same simple routine. It costs nothing and takes a few minutes a week.
- Look at the live board to learn the market. Before you need a flight, browse what is listed on the routes you care about. You'll get a feel for which aircraft fly them, what legs typically cost, and which days they cluster on. That makes it far easier to recognise a good leg when one appears.
- Set one alert per airport that works for you. The alert watches the airports you pick, so if both Farnborough and Luton would suit you, set one for each. If you only care about the date, leave the destination empty and you'll hear about every leg leaving your airport.
- Set the return at the same time. The way home is often the more flexible direction, so start watching it as soon as the outbound is settled.
- Agree the rules with your group in advance. Decide now which days, which airports and what price would be a yes, so that when an email arrives nobody needs a day to discuss it.
- Act within the hour. When a leg fits, ask for a confirmed quote straight away. You only commit when you accept the confirmed price and terms, so there is no harm in asking quickly.
- Keep the alert running after you book. If the leg moves or is withdrawn, the next match reaches you without you having to start again.
None of this guarantees a flight. What it does is make sure that when a leg that fits your window does appear, you are among the first to hear about it and ready to say yes.
Use the seasons: fly with the flow
Flexibility on direction and timing within a season is worth more than most people realise. Aircraft are pulled towards demand and then have to come back from it, so legs flow in predictable patterns: into the Alps as ski season builds and out again after the peak weeks; into the Mediterranean in early summer and out again at the end of August and into September. The days straight after a peak weekend are consistently when the most legs list.
So a flexible traveller can plan the trip to go with the flow: arrive at a resort when everyone else does, and leave on the day the aircraft go home. Our empty legs by season guide maps these patterns route by route.
Worked example: what flexibility is worth on London to Nice
Numbers make the point better than principles. Take a group of four flying London to Nice on a light jet, about two hours in the air, and compare a fixed plan with a flexible one. The figures are the house ranges for this route, for the whole aircraft.
| Plan | How it's built | Whole aircraft | Per person (÷4) |
|---|---|---|---|
| A week away, fixed dates | Two one-way charters at £9,000–14,000 each; the aircraft goes home in between | £18,000–28,000 | £4,500–7,000 |
| A week away, fixed out, flexible home | One-way charter out, empty leg back at £4,000–7,000 | £13,000–21,000 | £3,250–5,250 |
| A week away, flexible both ways | Two empty legs at £4,000–7,000 each | £8,000–14,000 | £2,000–3,500 |
| A weekend, fixed dates | Round trip with the aircraft waiting, so similar flying hours to one one-way charter, plus crew and parking costs | From about £9,000–14,000 | From about £2,250–3,500 |
Indicative house figures, light jet, London–Nice. Each one-way charter price includes the aircraft's positioning. Peak summer weeks typically run 15–30% above these benchmarks. The live figure is confirmed on enquiry.
Two lessons come out of the table. First, flexibility is worth the most on longer stays. When a fixed plan means paying for two one-way charters, each including an empty flight home, an empty leg in one or both directions can save many thousands of pounds. Second, flexibility is worth the least on a short weekend. If the aircraft can simply wait for you, a round trip costs roughly the same flying hours as a single one-way charter, and two empty legs barely beat it once you allow for the risk that one of them doesn't appear. For a two-night trip with fixed dates, a round-trip quote is often the better answer, and that is worth checking before you start waiting for empty leg flights.
Are you flexible enough? A quick scorecard
Answer these honestly before you plan a trip around flexible empty leg flights. The more answers fall in the right-hand column, the better your chances.
| Question | Poor fit for empty legs | Good fit for empty legs |
|---|---|---|
| How many days could you travel on? | One | Three or more |
| How many airports would you use at each end? | Only one | Two or more within a reasonable drive |
| Which way are you going? | The same way as the crowds, on the busiest day | Against the seasonal flow, or just after a peak |
| How quickly can you say yes? | Days, after checking with the group | Within an hour or two of an email |
| What happens if the leg falls through? | The trip is ruined | You book a fallback and lose little |
| Does the aircraft matter? | You need a particular size or cabin | Anything that seats the group and takes the bags |
If most of your answers sit in the middle column, price a charter instead and keep an alert running in case something turns up. If most sit on the right, flexible empty legs are likely to work for you, and the more often you travel this way, the better you get at spotting the legs that fit.
What flexibility doesn't protect you from
An empty leg is tied to someone else's plans, and those plans can change. Some empty legs are cancelled or rescheduled, mostly because the original charter moved. If that happens, you should expect a refund or a replacement, as our guide to an empty leg cancelled or delayed explains.
Flexibility is what makes that manageable. A few rules:
- Don't attach tight, non-refundable connections to an empty leg's exact timing.
- Keep your alert running after you book. If your leg falls through, the next match reaches you straight away.
- For anything that genuinely can't be missed, have a fallback booked or ready to book.
When flexibility isn't worth it
We'd rather say this plainly than sell you something that doesn't fit. Flexible empty legs are a poor match for:
- Fixed-date events. If the event is on Saturday and you must be there, waiting for a leg that may not come is a gamble. Book a charter or a scheduled flight and use an empty leg for the return if you like.
- Unusual routes. Legs cluster on busy corridors. On a route with little private traffic, there may be nothing to be flexible about.
- Solo travellers on a budget. You pay for the whole aircraft, so a single passenger rarely beats a commercial fare, flexibility or not.
- Anyone who'll be anxious until it's booked. Waiting is part of the deal. If the uncertainty spoils the trip, it isn't a saving.
For the full picture on when the trade-off pays, see are empty legs worth it. And if the trip has turned urgent, our last-minute private jet guide covers how fast a charter can be arranged.
Flexible on the date? Tell us the route and we'll email you when a matching leg appears.
Set up a route alert →Frequently asked questions
What are flexible empty leg flights?
They're empty legs booked by travellers who can bend on the date, airport or departure time. Because the operator sets an empty leg's route and timing, flexibility on your side is what makes a match possible. The more you can move, the more legs fit.
How flexible do I need to be to fly an empty leg?
Being able to travel on any of several days, and from or to more than one nearby airport, makes the biggest difference. Time-of-day flexibility helps at the margin. A fully fixed date and airport is a charter request, not an empty-leg one.
Can I reserve an empty leg in advance?
Not before it exists. Most legs appear only days or weeks before departure, once the charter that creates them is confirmed. What you can do is set a route alert so you're told when a matching leg appears, then book it quickly.
How far in advance do empty legs appear?
Usually days to a few weeks before departure, and often only 24–72 hours ahead. That's why a standing alert works better than planning months out and searching once.
What if my empty leg is cancelled?
Some empty legs are cancelled or rescheduled, mostly because the original charter changed. You should expect a refund or a replacement leg. Keep your alert running after booking so the next match reaches you.
Can I use an empty leg for one direction only?
Yes, and it's often the smartest way to use one. Fix the direction that can't move with a charter or scheduled flight, and use an empty leg for the direction that can.
Are flexible empty legs cheaper?
Flexibility doesn't change a leg's price, but it gives you access to more legs, so you're more likely to find a well-priced one. Empty legs typically sell at 25–75% below the equivalent charter.
Is a flexible empty leg right for a fixed-date event?
Usually not for the leg that gets you there on time. Use a charter or a scheduled flight for the fixed direction, and watch for an empty leg on the way home.
Do flexible empty legs work for a short weekend away?
Less well than for a longer stay. For a weekend, a round-trip charter with the aircraft waiting costs roughly the same flying hours as a single one-way charter, so two empty legs save little once you allow for the risk. Get a round-trip quote first.
Can I be flexible on the destination instead of the date?
Yes, and for leisure trips it works well. If you would be happy in Nice, Palma or Ibiza, watching all three multiplies the legs that could suit you. It makes no difference for fixed plans such as a meeting or a wedding.
