National was the first carrier to announce a sale the Sept. 11 terror attacks. Using no advertising other than publicity and its own Web site (www.nationalairlines.com), National announced reduced roundtrip airfare for four Tuesdays from Chicago and Dallas to Las Vegas or San Francisco.
National said it isn't advertising the "Get America Flying" promotion because "we are watching our dollars."
"We are getting beaten up as much as everyone else, but without as many zeros at the end," said Dik Shimizu, a company spokesman.
He said the intent of the promotion was to get people comfortable about flying. "It seems to be working."