This is part of a world wide protest over stalled contract negotiations.
The group demands better pay and better work conditions.
"Over eight years ago, flight attendants took deep cuts in pay only to have management then destroy their working conditions and cancel their pensions," said a statement from the AFA. The statement continues with "those cuts were scheduled to conclude to a year ago when the contract became amendable."
Protests in the United States will take place in cities such as Cleveland, Denver, Las Vegas, Los Angeles, New York, among others.
In a written statement, a spokesperson from United Airlines tells NBC Chicago:
"We are committed to working constructively with all of our unions to develop contracts that are fair to our employees and fair to the company. Earlier this week we reached a tentative agreement on a new contract with Continental flight attendants represented by the IAM, and our tentative agreement for Continental Ramp employees represented by the IBT was ratified on Dec. 29, 2010."