| Nonstop Flights: Austin to/from Chicago $97 r/t â American Airlines American Airlines has round-trip flights from Austin (AUS) to Chicago (ORD) for $97, NONSTOP. Flights March, April, May, August, and September. Departures on Tuesday, Wednesday, and Saturday. Very few extended weekends available. Origin/Destination reversible. Note: Carry-on bag is allowed for free on American Airlines. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate. Want a notification sent straight to your phone when any new deals are found? Join our Telegram channel and never miss another deal. We donât charge a subscription fee. All of our deal notifications are available for FREE via Instagram, Facebook, Twitter, Telegram, our Webpage, and our E-mail list. If you are paying someone a subscription fee for our content, you are being ripped off. Read More Nonstop Flights: Austin to/from Chicago $97 r/t â American Airlines . | 