An airline spokeswoman said Monday that its internal systems show the passenger, Jean-Marie Simon, canceled her Dec. 18 seat from Houston to Washington, D.C. after a weather delay.
Simon denies that she canceled the flight. She was given a seat in Economy Plus and told the Houston Chronicle she saw Jackson Lee sitting in the seat that was assigned to her.
United said it upgraded Jackson Lee automatically and not because she was a member of Congress.
The congresswoman said in a statement that she didn't ask for anything "exceptional or out of the ordinary."