Keep checking and hope you can get a break on prices. Be flexible and be willing to fly other airlines. This year we caught a break on airfare hopefully you can too.
I know you are in Indianapolis but I looked at Allegiant which flies out of Ft Wayne. Not sure how far that is from you an hour n a half i think. They have $44 and $59 fares in Aug and varying dates thru November. Just for kicks i typed in Nov 3-10 for 4 and got a total w/o seat fees baggage etc of $623 nonstop flights. I do not know if thats helpful but hopefully you will find something that works for u.