Another thing you might want to consider is getting a place outside Boone County. Boone County has a 1% payroll tax that the other nearby counties don't. Granted, 1% of first-year wages isn't much, but every little bit helps.
Consider networking with your classmates during the first week of class, while you're staying in the company-provided hotel room. Three or four of you can get together and lease a two-bedroom apartment for around $600-$650/mo. During your first day of class, there may be a representative from an apartment locating service there. Some complexes offer discounts to Comair pilots.
You should consider avoiding Covington unless you're familiar with that area. It's pretty urban, old, and run down in most parts of town. Florence and Hebron are pretty nice, and close to the airport, although both of those towns are in Boone County. Erlanger is five minutes from the employee parking lot, if you time the stoplights properly and is in Kenton County where you won't have to pay the extra payroll tax in most parts of the town, except for the extreme Western end, which is in Boone County. Erlanger is a little older than Florence, but is considerably more livable than most parts of Covington, which is also in Kenton County, contrary to what was posted earlier.
Remember that the Cincinnati's airport is actually located in Kentucky. There are areas of Cincinnati that are nice, I'm sure, but while you're on reserve you'll probably want to live as close to the airport as you can.