Merits of air transport are:
(i) It is the fastest, most comfortable and prestigious mode of transport.
(ii) It can cover very difficult terrains with great ease.
(iii) It makes access to far-flung and remote or otherwise inaccessible areas easier and quicker.
(iv) It provides transport services to offshore oil and gas exploration activities.
Demerits of air transport are :
(i) It is a very costly means of transportation.
(ii) Places not having airports or helipads are not covered by it.