I drive 3 hrs to Seattle to fly. I never book all inclusive, flights + WDW hotel. But you didn't mention if you were going to DL or WDW.
We go to WDW. I use Kayak.com to watch flights for seat sales. When I find one I like I book it.
I wait for WDW discounts to come out to book our resort. We usually book room only, I don't find the
DDP to be much of a deal anymore. You pay more and get less. IMO.
We have APs, but when we didn't, I bought park tickets from
Undercover Tourist. And used Mousesavers.com link from subscribing to there newsletter to get an extra % off. You can save up to $20 per ticket from
UT. Sometimes less, depending on what tickets they are giving extra discounts on.
They send you real tickets, not vouchers, and can be linked to your
MDE acct. Also the price you see is on main page is what you pay, shipping is free, and fast. Some sites add on extra shipping fees and tax when you go click checkout. UT doesn't.
If you're thinking of going next Christmas, I'd get my tickets now, as prices are increasing soon if they haven't already. Good luck with your planning.