How airports win the routes that change a network

Leon Verhallen helped build the case for one of aviation’s most inventive transfer operations, Jet Airways’ Brussels scissor hub. His wider lesson is that an airport’s route map is the product of patient airline economics, not wishful marketing.

A route is a capital allocation decision

Airport route development is often depicted as a contest of destination marketing. In reality the airline is deciding where to deploy scarce aircraft, crew and operating slots, often for years. Leon Verhallen’s career, from Fokker through Schiphol to Brussels, gives him both network and airport perspectives. He describes the groundwork behind persuading a carrier to open or expand service, which can take months or a decade. An airport can provide data, evidence of local demand, contacts with trade and tourism, and temporary commercial support. It cannot create passenger willingness to pay by promising publicity. The airline’s hurdle is durable contribution against the opportunity cost of placing that aircraft on a different route. Incentives may shift a marginal decision; they cannot make a structurally weak market strong.

The scissor hub was an engineering achievement

Jet Airways’ 2007 Brussels scissor hub remains the case study that makes the interview more than a primer on route sales. The Indian carrier assembled arrivals from multiple Indian origins and onward transatlantic flights so passengers could switch between aircraft in a coordinated bank. That design multiplied the useful city pairs from a limited number of aircraft movements. The value arose in the timetable: synchronised arrivals, reliable transfer times, baggage connections and a product travellers would accept. Brussels earned attention because it enabled an airline to offer connections that looked much larger than its individual nonstop portfolio. The model also concentrated risk. A delayed incoming flight could disrupt several outbound markets, while a weakened airline balance sheet threatened an entire airport bank.

The airport does not own the airline strategy

Verhallen is candid that Brussels was not solely the author of the Jet Airways idea and that the eventual end of Jet’s operation could not be solved by the airport’s enthusiasm. That distinction is easily lost in success stories. An airport helps assemble a route’s conditions, but the airline controls the fleet, fares, network and financing. The same point applies to present-day India connections. Brussels might offer a sizeable catchment and a gateway to onward markets, while the competing hubs of Amsterdam, Paris, Frankfurt and others can offer their own networks. A carrier will compare the whole system, including local demand, connecting yield, cargo and airline partnerships. The historical scissor hub is evidence of successful coordination, not proof that the concept can simply be resurrected.

The catchment is larger—and more contested—than Belgium

Brussels has an unusual geography. European institutions and business traffic sit alongside customers whose practical airport options include major facilities in the Netherlands, Germany and France. High-speed rail and road links extend the available market but also intensify competition. Verhallen’s ‘Have Seats, Will Travel’ approach turns part of route development into catchment creation: demonstrate that a profitable traveller could reach Brussels and choose the departing airline if the service exists. Yet catchment estimates need careful methodology. Counting everyone within a two-hour journey is not equivalent to forecasting booked seats. A passenger weighs access time, ground cost, schedule, loyalty programme and the alternatives on both ends. The airport’s job is to translate geographic reach into a defensible demand forecast.

Africa is a network specialisation

The Brussels Airlines franchise to sub-Saharan Africa is a defining element of the airport’s differentiation inside the Lufthansa Group. Verhallen explains the advantages of inherited market familiarity, suitable wave connections and a relatively compact transfer experience. Its strength should not be reduced to history or political relationships alone. Frequency, commercial relationships, cargo demand and airline cost also matter. The risk is that group network planning could redirect investment when another hub appears more profitable. Brussels must therefore demonstrate the contribution of its Africa network at the group level as well as the airport level. Its position is less as a miniature Frankfurt than as a hub whose specific connectivity makes it difficult to substitute.

Cargo can change the passenger-route calculation

One of the least visible variables in airline route selection is belly cargo. Brussels’ pharmaceutical logistics specialisation can provide revenue to long-haul passenger services that would look less attractive on passenger demand alone. But cargo performance has its own constraints—temperature-control facilities, handling quality, directional imbalances and available payload after passengers and fuel. An airport can build credibility by providing reliable cargo handling and customer demand evidence, not just tonnage aspirations. Similarly, financial support should be separated from ongoing route economics. A promotional budget can fund the launch; a cargo contract and sustained passenger yields may sustain the route after that support ends. The best network pitches integrate these realities rather than selling an airport as an abstract destination.

Environmental limits make network quality more valuable

Verhallen discusses the airport’s environmental permit, noise exposure and movement allowances, as well as its move towards quieter and more efficient aircraft. Permit numbers are period-specific, and an allowance is not the same as capacity at every hour of the day. The larger implication is that airports facing more stringent environmental and political constraints must compete on the value of each movement, not just the number of movements. That could favour higher-load-factor services, larger aircraft, productive cargo and better use of off-peak banks—subject to airline economics. The route developer’s work has therefore become more sophisticated: it now involves public policy, aircraft technology and community acceptance as well as fares and market size. The airport that wins the route still has to earn the right to keep it.