Hi,
Economics Honours is a three year undergraduate course provided by various universities. It has huge scope for the success of students.
The best colleges for economics honours taking admission on the basis of merit are:
Shri Ram College of Commerce
Hansraj College
Hindu College
Miranda College
Ramjas College
Kirorimal College
Lady Shri Ram College
St. Stephen's College
Daulat Ram College

Hii!
There are a number of Colleges across India offering B.A Economics course. Mostly the admissions ar provided on merit- based criteria. Some of the Colleges are-
* Fergusson College, Pune
* Loyola College, Chennai
* Presidency College, Chennai
* Delhi University
* Sacred heart College, Kerala
* Jadavpur University, Kolkata
Etc.,
Hope this helps.
Good luck!