Originally Posted by bursa

CO serves "meals"-a muffin for breakfast, or slightly warmed sandwich for lunch, in coach on mealtime flights. I think for longer (transcon) flights they still offer hot meals, but haven't been on transcon with CO since summer.
See AA thread for AA's food for purchase on transcon. Not much food in coach for medium/short-haul flights.
Nice variety of meals available for purchase on all Song flights. DL/US shuttle still serve more than other mainline flights of equivalent short length. Just a little bit of info.