1. The North America – The Greatest air traffic is found in USA with internal and international flights. It has the top airports like Attanta, Chicago, Los Angeles, Dallas.

2. South America – It has far air routes. The Major international airports are: Rio-de-Janeiro, Brasilia, Saopaulo, Santiago and Buenos Aires.

3. Africa – It is served by 2 international Airlines. 

(a) The East African air route through London, Rome, Cairo, Nairobi and Johannesbrug. 

(b) Sri Lanka and South East Asia and the Central air route

4. Australia – It is a well developed internal and external air services. Sydney is an important international airport.

5. Asia – China has external links with other countries of the world. Its enroute location is between Europe, Asia, Australia and Africa.

6. The Russian International Air Routes: Russia and other countries of former Soviet Union are well connected by air service. All Countries of the World connects each other through airlines of different comers.