Definition
An identifier assigned to a specific scheduled or operational flight, typically consisting of an airline designator (two or three letters) followed by a numeric sequence, used by air traffic control, dispatchers, and operators to refer to that flight in communications, flight plans, and tracking systems.
Plain English
The unique label given to a particular flight, like 'United 237' or 'Delta 1450', that everyone uses to refer to that flight in radio calls, flight plans, and computer systems.
Context Anchor
Seen in instrument flight plans, airline or company operations, and communications with air traffic control when identifying an aircraft.
Why Pilots Care
Accurate use of the flight number ensures the correct aircraft is identified during separation, routing, and scheduling decisions.
Intuition Check
A flight number is not just a count of how many flights have happened. In this context, it is an identifier for a specific flight operation.
Example Sentence 1
On initial contact with departure, the crew used their flight number, 'American 482, climbing through three thousand for five thousand.'
Example Sentence 2
Verify the flight number on the release before calling for taxi clearance.