Go to helloflight.com. Type the flight number in the box labeled Flight ID in the upper left part of the screen. For example, the number of the flight from London, England to Auckland, New Zealand via Los Angeles is ANZ1. Enter the Flight ID of the flight you are tracking and click GO.
Review the flight details on the resulting page. This map will show where the Air New Zealand flight is in real time. The box to the left will display details about the flight. To use our example, the path of ANZ1 shows that the flight crosses the Atlantic near Iceland, and then flies diagonally across the USA to Los Angeles. From there, it is almost a straight line southwest to Auckland.
Look at the altitude chart below the map. This will show the average altitude for the flight. When our flight took off from London, the chart shows the altitude increased and remained constant for most of the trip, until it descended into Los Angeles for the landing.
Check the arrival time. If there are any significant delays, they will be displayed here. Remember that this is just an estimate. Long flights crossing the Atlantic or Pacific, like those commonly flown by Air New Zealand, can be delayed due to strong cross winds.