On September 19, Duncan went to Monrovia Airport, where, according to Liberian officials, Duncan lied about his history of contact with the disease on an airport questionnaire before boarding a Brussels Airlines flight to Brussels. In Brussels, Duncan boarded United Airlines Flight 951 to Washington Dulles Airport.[23] From Dulles, he boarded United Airlines Flight 822 to Dallas/Fort Worth. He arrived in Dallas at 7:01 p.m.