I crossed DAL Dallas Love Field off the list in January. At present I'm at 95 out of 100, still trying to figure out how best to do GUM and Branson, MO.
On a side note, I have
slept in 58 of those airports.
GRALISTAIR, Allegiant provides very affordable service into or out of Orlando-Sanford from a wide variety of destinations. Check out their web site and you're bound to find something that should blend in well with your other travels. You could always rent a car while in Florida and drop it off at Sanford. I did that last year, picking up in Tampa and droping off at SFB with little or no extra charge.