The status of particular flight can be checked by using an online flight tracking website, such as FlightStats or FlightView, by entering flight information as well as the departure date. These websites also generally allow flights to be searched using either their airport of origin or travel route.
Alternatively, flights from a specific airline or heading to and from a specific airport can also be monitored through any available tracking tools on their respective websites. United Airline flights, for example, can be monitored through a tool on the United website alongside any relevant gate information. Larger airports, such as Heathrow, London, also provide a flight information tool that can track flights using their flight number.