BBA

Yes you can, you would require to give entrance test for the college you want admission in.

There are so many good business schools or universities, where you can do MBA or BBA.

If you do degree in the field of your interests then chances of your career success are high and you will have satisfied career and no regrets later in life. If you are interested in hotel management and sure about your interest area and want to pursue hotel management career then you may drop BBA and seek admission in IIHM.

All MBA specializations has good scope and career opportunities. You have exposure to basic understanding on different management functions during BBA syllabus. As all MBA functional specialization require different skills and traits to succeed, you are advised to do your strength and weakness analysis to chose specialization which is as per your strengths and interest area to excel.

They have their own entrance exam. Admission is on the basis of merit in entrance test and performance in skill assessment, micro presentation, personal interview and past academic records.

BBA in airline management will be best for you.
You can check the list mentioned below for the list of colleges:
https://hospitality.shiksha.com/bba-in-aviation-in-delhi-ncr-categorypage-6-87-265-0-0-10223-1-2-0-none-1-0

MBA is logical extension of BBA degree. BBA will provide you with exposure to select right specialization based on your strength and understanding of management functions. BBA is a lighter degree in comparison to rigorous B.Tech. It will provide you sufficient time to prepare for MBA entrance examination and do MBA from a Tier I management college.

Both has its own advantages and disadvantages, but it depends on you, what you want to do. BBA is more of management, whereas mass communication is about media. If you are extrovert in nature, public speaking and expressing your own view easily and you enjoy this, then you can go for mass communication.
If want to do BBA, which is all about management, then you can for it.

B.Com is better than BBA.

You can start the basic preparation now but concentrated preparation in six months before CAT examination.