Large hub airlines rarely schedule every flight independently. They arrange arrivals and departures into coordinated waves, often called banks, so passengers and bags can transfer between many flights within a practical connection window.
Arrivals first, departures next
A bank may bring regional and short-haul aircraft into the hub over a concentrated period. After passengers transfer, another wave departs toward domestic or long-haul destinations. The structure multiplies the number of city pairs an airline can sell without operating each route nonstop.
The operational cost
Banking creates peaks in gate use, security demand, baggage handling and runway traffic. It can also spread delays through the network: a late inbound aircraft may affect several onward flights or force the airline to hold a departure for connecting passengers.
Why some hubs are less banked
Airlines with strong local demand may operate a more continuous schedule. Congested airports may also lack the runway or gate capacity for sharp peaks. Low-cost carriers typically place less emphasis on protected connections and therefore need fewer coordinated waves.
A hub bank is a network-engineering tool. It turns a collection of individual routes into a connected system, but the commercial benefit depends on minimum connection times, airport capacity and resilience when disruption begins.
Editorial Notice: This article was prepared using information considered reliable and publicly available at the time of publication. Every reasonable effort has been made to ensure accuracy; however, aviation news can develop rapidly, and subsequent information may alter the facts or context reported. If you believe any material is inaccurate, misleading, improperly attributed or should be reviewed for amendment or removal, please contact us with the article title, the specific passage concerned and supporting evidence. We will assess legitimate requests promptly and, where appropriate, correct, clarify, update or remove the material.