The aviation sector has two main flight categories: civil and military. In simple terms, civil aviation refers to all aviation that is not connected to the military. This includes private and commercial air travel, regardless of whether flights carry passengers, cargo, or a combination of the two.
When booking a flight, U.S. travelers can often take their pick from three major legacy airlines: Delta Air Lines, United Airlines and American Airlines. ...
To choose, consider five factors: where each flies, their credit card offerings, their loyalty programs, overall fees and the in-flight experience.
It is customary to classify the several components of an airport in three major catego- ries: airside facilities; landside facilities; and the terminal building, which serves as the interchange between the two' (see fig. 7).