pppfun -
as far as MSP - any chance you could fly out of a nearby airport and connect through MSP? You'd get the connecting bonus and you might be able to find a cheaper fare.
ALSO...
I found this one for Detroit area people, originating in TOL, also to CVG. (And it's even the weekend of my sister's graduation from Miami University - Ohio. We were planning to drive, but with a deal like this, it looks like we're flying!)
COST: $102.50 including taxes/fees/etc.
5/3/02 - TOL-DTW, DTW-CVG: there are several departing flight options ranging from 7:00am to 6:55pm. Also several times on 5/4/02.
5/5/02 - 7:05pm CVG - 8:20pm DTW #3632
9:00pm DTW - 9:55pm TOL #5879
This is the only returning flight option.
Same bonus apply from first post above. For those already enrolled with NW, you can still get 18000 miles for $102.50 which equals $.0057 per mile!
This is two cheap fares to CVG listed on this thread - maybe it's time to see some Reds baseball?!?