Thanks for the info. Will check prices for both airports and car rental rates too!!
Good question, Diana R. :) I thought about suggesting it to the OP, but she said she was flying Delta. American (American Eagle) is the only airline with flights into and out of Waco at the current time, and they only fly to DFW and back.
I do fly out of Waco sometimes, and typically prefer to do that for convenience sake. It usually adds $125 to the cost of the ticket, but sometimes randomly is cheaper than flying from DFW. However, for me there are usually other factors.
The planes are smaller and fly at a lower altitude to make the round trip to DFW. Besides bumpier flights (my kids' reason to hate flying out of Waco) this translates into more weather related delays or cancelled flights out of the Waco airport when connecting flights from DFW are continuing on. The last time we tried flying out of Waco (last Thanksgiving when my daughter was flying) the flight was delayed while the connecting flight was on time... we had to jump in the car and high tail it to DFW so she could make the connecting flight. American did not refund the cost of the ticket from Waco to DFW since the flight did actually go, eventually.
Also, the connections are sometimes very long. Personally, I'd rather drive from DFW to Waco and get home sooner rather than wait around DFW for a connecting flight.
But for an unhurried, relaxed trip, I always at least consider flying from Waco.