The 5 billion passenger mark will have been passed in 2026. To reach this exceptional level, no fewer than 28,000 aircraft will be needed in service to serve just over 4,000 airports around the world. This volume of traffic is starting to cause serious problems. First of all, sufficient airspace is required, especially in very dense areas such as the United States and Europe. Secondly, it must be acknowledged that air transport is a source of CO2 emissions, even if it represents less than 3% of total emissions. Finally, we must take into account the attitude of populations living near major airports, who find it increasingly difficult to tolerate aircraft flying overhead, even if they are becoming quieter and quieter.
The outlook shows that the management of this activity will be complex over the next 20 years or so. Continued growth of around 4% to 5% per year is expected, which corresponds to carrying 250 million additional passengers each year and putting 1,400 new aircraft into service annually. The challenge is significant, as it is necessary to take into account not only aspects related to safety and security, but also the ever increasing demands of consumers who are less tolerant of delays, lost luggage, or lack of comfort, while at the same time demanding ever lower fares.
We are not far from a dead end. How can we ensure continued demand for air transport while respecting environmental constraints and consumer expectations? Governments will certainly continue to levy taxes, if only to satisfy environmental lobbies and fill their coffers, while imposing compensatory obligations on companies for operational hazards they must endure. How can this squaring of the circle be resolved? It will certainly be necessary to carry more passengers with fewer aircraft, at least through the use of larger, less congested airports.
A first response is provided by the entry into service of a new generation of aircraft derived from widely used models such as the Boeing 737 or the Airbus A320. These are long range versions with lower capacity than the aircraft used until now, which are only profitable when operated on very large routes, feeding major airports that are already difficult to manage given environmental pressures. This new generation, symbolised by the A321XLR with a capacity of 200 passengers and a range of 8,700 km, will be capable of operating profitably on medium demand routes that until now have been consolidated through major hubs, as well as on routes as significant as transatlantic or US coast to coast flights.
But this will not be enough to relieve congestion at major airports. One option is to create gigantic platforms such as Dubai World Central or Al Maktoum International, built to handle 250 million passengers, as well as the new airports in Beijing or Istanbul, which are slightly smaller but nevertheless larger than most older hubs, with capacities exceeding 120 million passengers. However, these large complexes will have to be built far from urban areas, if only to secure the necessary land, such as the 140 km2 required for Dubai World Central. By comparison, the surface area of Paris is 105 km2. It will therefore be necessary to create substantial new ground transport links, which will further impact the environment.
There is another solution, which would be to return very large aircraft such as the B747 or the A380 to service after their withdrawal following Covid. They alone are capable of carrying between 600 and 800 passengers, effectively replacing four aircraft with an average capacity of 200 seats. Of course, these aircraft had supposedly become too expensive to operate. However, in recent years the oil shortage predicted in the 2010s, when a barrel was priced at 125 dollars, has been replaced by relative abundance, with prices falling to around 67 dollars per barrel at recent quotations. As a result, most operators have returned their A380s to service. Not only Emirates, which has always believed in this type of aircraft and whose Sir Tim Clark has been calling for an improved version from Airbus, but also British Airways, Singapore Airlines, Qantas, Qatar Airways, Etihad Airways and even Lufthansa. Only Air France has not taken this step.
And then, to accommodate the additional 4 to 5 billion passengers expected between now and 2040, it will be necessary to design an aircraft capable of carrying between 800 and 1,000 passengers, not over very long distances but on flights of four to five hours, which are likely to multiply.
I hope that manufacturers already have such aircraft on their drawing boards and that the current major airports will be ready to accommodate them.





