Daily long-haul flights (10+ hrs flight time) are sometimes very difficult to make money on. In order to make a daily flight, such destinations require 2 airplanes whereas a -10 hr flight can be down with just one airplane. So atleast in theory, a CPT flight should cost almost twice as much to the passenger compared to a shorter trans-atlantic flight. But that is not the case. Often yields are too low even though the loads are heavy on many of these routes. I suspect that was the case with CPT. Too bad...I hope it comes back.