What defines a delayed flight?

A delayed flight is defined as a flight that cannot depart or arrive as planned. This typically occurs due to various factors such as weather conditions, technical issues, air traffic control constraints, or operational delays. When a flight does not adhere to its scheduled times, it is considered delayed, affecting passengers and overall flight operations.

Understanding this definition is crucial for managing aviation operations and passenger expectations, as delays can have cascading effects on connecting flights and airport logistics. The other choices do not accurately reflect the concept of a delayed flight. For example, flights that depart early or arrive at their destination ahead of schedule do not fit the criteria for delays, nor does a scheduled cancellation, which indicates a flight that will not operate at all.