Fly nonstop from Chicago to Baltimore for $145 round-trip on American.
Seen below, we found seats departing ORD on Tuesday, June 30, returning from BWI on Wednesday, July 8.
Other dates are available for travel on Tuesdays and Wednesdays through August 19.
For booking info, see our Fare Details.
Need a room in Baltimore? Here's a look at what's available for the above dates on Hotelwatchdog.