Diversion

What a Diversion Is

A diversion occurs when the flight crew decides that landing at the aircraft's planned destination is not possible or not advisable, and instead redirects the aircraft to land at a different airport. Diversions are a routine, pre-planned contingency in aviation rather than a rare emergency measure — every flight is dispatched with one or more alternate airports already identified in case a diversion becomes necessary.

Common Reasons for Diversion

How Diversion Decisions Are Made

The decision to divert is made by the flight crew, often in consultation with the airline's dispatch or operations control center, drawing on real-time weather, fuel, and aircraft status information. Because every flight plan already includes designated alternate airports and the fuel reserves needed to reach one, diverting is a built-in safety option rather than something the crew has to improvise.

What Happens After a Diversion

Once the aircraft lands at the alternate airport, the airline's operations team works to manage the consequences:

Why It Matters

Because a diversion sends an aircraft to an airport it wasn't scheduled to serve, it can affect passenger connections, crew schedules, and downstream flights operated by that aircraft, making it an event that airline operations teams manage closely even though the diversion itself is treated as a normal safety response.