From Travel Weekly:

NEWS - Agent Issues

Fla. agency booked two suspected hijackers (9/19/2001)


FORT LAUDERDALE, Fla. -- A five-person, storefront travel agency here has found itself caught in one of the many webs created in the recent terrorist attacks in the U.S.
Mile High Travel booked two of the suspected hijackers on their flights from Florida to Newark.

An agent, who asked not to be named, said the pair paid cash for one-way economy class tickets on Spirit Airlines.

After news of the terrorist assaults and some details on suspects emerged, the agency called the FBI.

At this juncture, the firm's personnel are concerned about negative publicity that might result from the discovery of who their clients were.
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Looks like no airline was safe at that time.

Joe