What does UN stand for?

Unknown

In the context of Flight Status, 'Unknown' signifies a situation where the current status of a flight cannot be determined or has not been updated in the system. This could be due to a variety of reasons, including technical issues with tracking systems, delays in reporting, or the flight being in a phase where status updates are not typically provided.

The term 'Unknown' is critical for passengers and airline staff alike, as it prompts further inquiry or action to ascertain the flight's actual status. It serves as a placeholder that indicates the need for updated information, ensuring that all parties are aware of the lack of current data and can seek clarification or updates from relevant authorities.