I usually wear my volt nike band while traveling and have volt beats fit pros until I'm actually in the plane, where I switch to my headphones. I like the world time face in flash until then, and then I usually go back to my normal watch faces. Complications wise I might switch something like timer out for world clock so that I have my local and destination times available. I also make sure to turn off my alarms.
In terms of settings, I turn on low power mode, manually reduce the brightness through the settings app, and that's about it