Hmm, Florida in January sounds nice! The drive to SEA makes me nervous at that time of year though.
Been doing that drive for years, so far I've missed any snow storms! But even with snow, it's I-5 all the way so shouldn't be bad. Only one scary time going thru Cloverdale to the border, there's a hill, only 1 inch of snow on the road, but some cars ahead of me (prob didn't have good tires) were sliding all over. I had no problem going up with my front wheel drive sedan.
Just booked our January flights $318 RT. United going down, with 1 hr layover in Houston, then coming home direct flight on AA operated by Alaska Air.
I was surprised I was able to book all flights on AA site. Even the United. Found it on Kayak.
I did a little oops, never did that before, but I clicked on the wrong Alaska return flight. I wanted the 6:25pm flight, but clicked on the 8:00am one.
Yikes. I noticed my mistake after a hour, and immediately phoned AA. They were able to change it for me, and flight was $19 cheaper

so they are issuing me a travel voucher that I can use for baggage fee, or another flight. They waived the change fee.
