FedEx routed all packages through one hub to guarantee overnight delivery

By the early 1970s, air freight in the US moved the same way passenger routes historically had before airlines adopted hub-and-spoke networks: carriers flew cargo directly between city pairs, and a route only got scheduled, reliable service if enough volume already existed on it. That structure made any promise of guaranteed overnight delivery between two arbitrary US cities impossible — most city pairs simply never had enough freight moving between them on a given night to justify a direct flight.

Fred Smith, who had outlined a centralized package-sorting concept in an undergraduate economics paper at Yale years earlier, founded Federal Express in Little Rock in 1971 and relocated operations to Memphis in 1973. Rather than adding more point-to-point routes, Smith proposed routing every package through one central sorting hub regardless of its actual origin or destination, then flying it back out overnight — deliberately lengthening most packages' physical flight path in order to make delivery volume on any given route irrelevant to whether the service could be offered at all.

Routed every package through one central hub, pooling volume across the network so no single route needed its own demand, making overnight delivery a network property.

Central hub pools volume from all routes, so no single city pair needs high traffic.

Aggregate volume at the hub justifies flights regardless of origin-destination pair.

Longer physical paths are offset by network-wide reliability, enabling a stronger promise.

The guarantee becomes a property of network design, not of any specific route's economics.

When a service depends on volume between specific pairs, centralizing all flows through one point can make the service uniform, even if individual paths get longer.

Early operating losses ran near $1 million a month and Smith famously had to win $27,000 at a Las Vegas blackjack table to cover a fuel bill and make payroll, but Smith went on to raise $50-70 million from roughly twenty venture investors — at the time reported as the largest venture financing in US history — and the hub-and-spoke model became the operational backbone behind FedEx's growth into a global logistics company; UPS, DHL and most major freight and passenger airlines subsequently adopted the same routing structure.