Fly nonstop from Chicago to Washington DC for $90 round-trip on Southwest.
Searching Southwest.com, we found seats departing MDW on Wednesday, September 2, returning from DCA on Wednesday, September 9.
Other dates are also available on Tuesday, Wednesday, and Saturday, through December 16.
See our Fare Details for booking info.
Need a room in DC? Here's what's available for the above dates on Hotelwatchdog.