However the 9/11 Commission Report has records of all flights undertaken by Atta, and none of them match the one claimed by this guy:
July 1, 2001: Atta flies from Boston to New York City.
Early July. 2001: Atta picks up travel tickets to Spain at travel agency in Paterson, New Jersey.
July 3, 2001: Atta flies from Newark to Fort Lauderdale.
July 7 or July 8 or July 9, 2001: Atta flies from Miami to Madrid, Spain via Zurich.[30][31] Reports claim final plans for the attacks are set.[32]
July 19, 2001: Return flight to America, Fort Lauderdale, Florida via Atlanta's Hartsfield International Airport.
Late July, 2001: Atta flies to Newark, New Jersey to meet with other hijackers in the area.
July 30, 2001: Atta flies back from New Jersey to Florida.
-Gumboot
ETA. According to the 9/11 Commission, when Pat claims Atta was a passenger on his flight from Baltimore to Atlanta, Atta was actually in New Jersey meeting with other hijackers.