What would be an example of a flight segment?

A flight segment is defined as a portion of a journey between two locations where an airplane takes off from one airport and lands at another. In this context, a sequence of multiple airport destinations illustrates the concept of a flight segment because it involves various legs of travel, with each leg corresponding to a specific flight from one airport to another. Each destination represents a segment of the entire trip where passengers may board or disembark.

On the other hand, a direct flight from one city to another is just one segment of the journey rather than a sequence of segments. A round trip implies a return journey but does not capture the individual segments involved. Lastly, a taxi from the gate to the runway is considered ground transport rather than a flight segment, as it does not involve takeoff or landing.