Continental Airlines is one of the best airlines to keep in touch with travelers regarding their chance for an upgrade–especially if you have a mobile device. Through http://www.pda.continental.com you can check where you are on the upgrade list in real time. You can also check-in for your flight, get flight information and status, do a flight search, view current reservations (you’ll need your confirmation number), access your OnePass account or a timetable and more.