If you search for "can a Boeing 787-9 Dreamliner reach Tokyo from New York," you'll find two very different types of answers. One kind lists performance figures - ferry range, payload range, cruise altitude. The other kind is a dispatch briefing - actual winds for that date, fuel uplift, alternate airports, weight and balance. These are not the same question. They're not even the same discipline. Flight range is what's physically possible. Flight planning is what actually happens on a specific flight on a specific day. PlaneRange answers the first question. Nobody but an airline dispatcher can answer the second.
Flight planning is an operational discipline performed by licensed dispatchers using certified software tools - Lido, Jeppesen FliteDeck, PFPX, and similar systems. For a single departure, a dispatcher calculates:
None of this is standardized across two flights on the same route - a Monday departure from London to Singapore on the same aircraft type might require 2,000 kg more fuel than the Friday departure because the jet stream shifted position. A dispatcher doing this work needs regulatory authority, certified tools, and real-time meteorological data. This is not a consumer problem. It's a professional one.
Flight range answers a different question: which destinations are physically reachable for a given aircraft at a given passenger load? This is genuinely useful knowledge for anyone curious about how airlines make route decisions, why some city pairs have no nonstop service, or why aircraft like the Airbus A321neo XLR opened routes that were previously impossible for any narrowbody jet.
The ring on the PlaneRange map represents the outer boundary of what a specific aircraft configuration can physically reach from the selected airport, accounting for the payload-range tradeoff. It's not a flight plan. It's an envelope - the set of all destinations inside which a flight is theoretically possible before operational factors narrow the choice further.
This framing matters because it's honest. The ring tells you what could happen; it doesn't tell you what will happen on any given Tuesday in February with a specific cargo load and a forecast low-pressure system over Iceland.
Every aircraft has two very different range figures. The Boeing 787-9 Dreamliner illustrates the gap clearly: its ferry range - flying empty, no passengers, no cargo - is 10,100 nautical miles. Its maximum payload range - cabin and hold loaded to structural capacity - is 5,350 nautical miles. That's a difference of nearly 4,750 nautical miles, roughly the distance from New York to Moscow.
The gap exists because every kilogram of payload displaces fuel. A fully loaded 787-9 simply cannot carry enough fuel to fly the same distance as an empty one - the total weight budget runs out. At maximum structural payload, the aircraft takes off at its Maximum Zero Fuel Weight, and the amount of fuel that fits within the Maximum Takeoff Weight limit is what it is. No engineering workaround can change the math.
The passenger slider on PlaneRange moves you through this curve in real time. At zero passengers, the ring approximates ferry range. Drag toward a full cabin and watch the ring contract - slowly at first (the payload-range curve is concave, so early passengers cost relatively little range), then faster as you approach structural capacity. At 100% load, the ring shows the maximum payload boundary.
Other long-range aircraft show different gap sizes: the Airbus A350-900 goes from 9,700 nm ferry to 8,100 nm at max payload - a 1,600 nm gap reflecting a more balanced design. The Boeing 777-300ER drops from 9,300 nm to 7,500 nm. The slider is the payload-range curve made visual - an abstraction that no static spec sheet or competitor's tool gives you.
PlaneRange is the right tool for questions that start with "could" or "what if":
These are questions that matter for understanding route economics, airline strategy, and the physics of long-haul aviation. They are also genuinely interesting to anyone who has flown on these aircraft and wondered how they work.
PlaneRange is not a dispatch tool and was never intended to be one. It does not provide:
Dispatchers, pilots doing pre-flight planning, and anyone with an operational need should use Lido, Jeppesen, or equivalent certified systems. PlaneRange's ACAP-sourced range figures and real airline seat configurations are as accurate as practical for a consumer exploration tool - but accuracy for curiosity and accuracy for regulatory compliance are different standards. PlaneRange meets the first. It does not attempt the second.
That honest framing is the point. Understanding what an aircraft can do - and what actually constrains it on any given day - is genuinely interesting. The slider, the wind model, the per-airline seat configs: these make the physics visible in a way that a published spec sheet never does. That's what PlaneRange is for.
See range, specs, and airline configs on PlaneRange:
A350-900 777-300ER 787-9 Visualize on the Map →New routes pushed to their limits, new aircraft, and features as they land.
