airHowever, air is also the most expensive means of transportation; it is generally used only for smaller items of relatively high value—such as electronic equipment—and items for which the speed of arrival is important—such as perishable goods.
While air transportation is one of the most expensive modes of transportation due to the requirement of speed and cost of fuel, shipping cargo by air is critical for markets and supply chains that rely on expedited delivery services.
Air transport is considered costlier as compare to other mode of transport. The operating cost of aero-planes are higher and it involves a great deal of expenditure on the construction of aerodromes and aircraft. Because of this reason the fare of air transport are high that common people can't afford it.
Fastest and costliest mode of transportation is airways. It is very suitable for transport of valuable and precious goods and is a great time saver.