BBA

Some of the best colleges are: Shri Ramswaroop Memorial University, Wisdom School of Management and Integral University.

Both the courses are good. But BBA is better as general BBA gives you knowledge of all the fields whereas BBA-IB will be more focused on international business. I would not suggest you to choose a specialisation in your graduate degree as it will be too early. Not only this, it will restrict you to

Cabin crew job is a full-time job with lots of responsibilities and odd working hours. It may be difficult to do regular BBA with the job. However, you can do BBA through distance learning.

Yes, you can pursue BBA in IB along with CA.

If you want to do MBA in future or want to set up a business then BBA degree will be a better option for you. BBA will give you exposure on all aspect of running a business.

It is Rs. 2.67 lakhs per year.

Top 10 BBA Colleges in India by Shiksha.
Check out the link:
https://www.shiksha.com/bba/ranking/top-bba-colleges-in-india/93-2-0-0-0

College is good when it comes to studies, exposure, placements, faculty and helping students in the right direction.
Placements
Yes, companies like Coca Cola, Make My Trip, SMC Global Securities, HDFC, ICICI, Axis Bank, Agro Tech visits college frequently for placements, trainings and guest lectures w

You may refer list of top colleges for doing BA Hons Economics or BBA in India:
BA Hons Economics:
https://www.shiksha.com/humanities-social-sciences/ranking/top-arts-colleges-in-india/95-2-0-0-0
BBA: https://www.shiksha.com/bba/ranking/top-bba-colleges-in-india/93-2-0-0-0