01
The benchmark: four operating super-hubs move 303 million passengers a year — the fifth is being poured in concrete
02
Overview: the centre of gravity of world transit sits between the Bosphorus and the Gulf
03
Market and geography: one-stop connectivity is the product, and the mid-point owns it
04
The stopover-to-stayover economics: a transfer passenger is a cost centre until the city captures a night
05
The capacity pipeline: order books worth a decade of growth, and airports racing to absorb them
06
What Riyadh Air changes: the corridor gets its first new super-connector in a generation
07
Outlook to 2030: three scenarios for a corridor building toward 400 million
08
Sources and methodology