Originally Posted by
worldiswide
This really describes the situation succinctly. There isn't a lot of schedule choice out of Jax and OP needs to balance seats in first vs layover time and work from there to determine their best option. Much as we don't like it, we can't manufacture new schedules, and we play in AA sandbox, and have to work with what's available.
This is true, but AA could easily open inventory on the wide-open routing JAX-MIA-LHR so that OP wouldn't be stuck with the long layover in ORD.