Honestly, I'd figure out where in the world I wanted to visit, examine the culture, explore our planet, etc., then look at who flew there. Maximizing time in a metal tube wouldn't be one of my goals. I doubt many of the top global F airlines would fly where I want to go. I'd probably end up on a whole bunch of ships (Antarctica), small primitive jets (Everest, Amazon, african desert), and other non big-plane modes of transport.