Airline and transportation officials say a flight attendant became ill on a Southwest Airlines flight, prompting hazmat crews at BWI to check the air on the craft.
It happened on Southwest Flight 709, which left Norfolk, Va., about 4 p.m. Thursday heading to BWI and then Chicago.
The plane carried 134 passengers and five crew members. It landed at scheduled at Baltimore-Washington International Thurgood Marshall Airport and the sickened flight attendant was taken to a local hospital.
Maryland State transportation officials say hazmat crews sampled the air on the plane, and blamed a cleaning solvent for the incident.
A Southwest spokeswoman says passengers headed on to Chicago on another plane.