Hello Gopal

The fee for Aeronautical engineering depends upon the institute you want to take admission. The course fee i.e. for 4 years ranges between 50000 to 5 lakhs. 

Every iits has different fee structure like 

• IIT Mumbai : 48000
• IIT madras: 96000( approx) 
• Amity university : 300000(approx)
• Manipal institute of technology : 350000

This was to give you a rough idea about the course fee. 

Hope it helps