My filing state is CT and I am trying to enter my 529 Contributions. Where should i enter my contributions to get the state returns as CT is one of the eligible states?

To enter your contributions:

1. Open your CT state return and continue until you get to the screen Here's the income that Connecticut handles differently
2. Scroll down to Education
3. Select CHET Contributions

CHET is a state-sponsored, tax-advantaged 529 college savings plan that's helping families and individuals plan for the cost of higher education. Connecticut families can take an income tax deduction (up to $5,000 for single filers, $10,000 for joint filers) on contributions to CHET accounts

Connecticut Higher Education Trust (CHET)

There appears to be an issue with TurboTax and the Connecticut State Return.   Connecticut 529 contributions are tax deductible at the state level, but there is no Education section or 529 Contribution deduction on the State tax summary page.  If you let the system walk you through the deduction process though, step by step, it will eventually ask you if you made contributions to a 529 (in the income section, not the credits and taxes section).  Someone at TurboTax should fix this.