Fly nonstop from Chicago to Washington DC for $87 round-trip on American.
Searching AA.com, we found seats departing ORD on Tuesday, September 1, returning from DCA on Tuesday, September 8.
Other dates are also available on Tuesdays and Wednesdays through early December.
See our Fare Details for booking info.
Need a room in DC? Here's what's available for the above dates on Hotelwatchdog.