Ultimately I'm to end up in Amarillo (Thanksgiving 2019), but it seems so dear to fly there...im trying to research whether it would be lots cheaper to fly somewhere else, pick up a hire car and drive to Amarillo. Flexible about where I fly from... GLA, EDI, MAN...preferably not London, but it's not out of the question. So many variables make it hard to shop... I was wondering if you guys knew of a good site that makes it easy to chop & change and has good prices.
Well, your nearest airports to Amarillo would be Lubbock International Airport ("Preston Smith" - about an hour and a half south of Amarillo), Oklahoma City (Will Rogers - about 4 hours east of Amarillo), or Albuquerque (about 4 hours west of Amarillo).
Dallas-Ft Worth is the home base of American Airlines, so it might be cheaper to fly into there, but you'd have a lengthy (and somewhat boring six hours') drive to Amarillo from there. If you have more time than money, DFW might be the way to go. No matter how you look at it, it's going to be at least a few hours on very flat and numbingly unscenic roads if you don't fly direct to Amarillo.