What's the difference between flight warning and delay?

Different meanings, different reasons.

According to Jane's community query, the difference between flight early warning and delay lies in the different meanings and reasons. Flight warning is a civilized saying that flights can't take off and land as scheduled, such as flight delays caused by weather; Flight delay refers to the situation that the landing time of the flight is delayed by more than 30 minutes than the planned landing time or the flight is cancelled. Flight warning may be due to some temporary factors, such as weather and traffic control. Flight delays are usually due to some persistent factors, such as mechanical failures and airline scheduling errors.

A flight refers to any scheduled flight that uses aircraft to transport passengers, mail or goods.