To reduce air congestion, Bush said airspace typically dedicated to the military will be temporarily opened to commercial airliners. Last year, the Pentagon freed up two East Coast corridors during Thanksgiving; Bush said that was being expanded this year to include the Midwest, the Southwest and the West Coast, including the skies around Los Angeles and Phoenix.

The military uses the space for exercises, but often makes some available to commercial planes on an ad hoc basis. This move would allow airlines to count on the extra room in the skies, which will be especially helpful if bad weather further snarls air traffic.

“A lot of our citizens are nervous about travel. They are saying ÔWill traveling home for the holidays be a wonderful life or will it be the nightmare before Christmas?'” Bush said, referring to the films, “It's a Wonderful Life” and “The Nightmare before Christmas.”

With planes expected to be about as crowded this year as last, the president announced other steps - most already in the works or tried before - aimed at easing congestion.

He said his administration was working with the Federal Aviation Administration, the Transportation Security Administration and the airlines to make more staff available to speed check-ins and boarding.

The president also said new regulations will be in place in time for the Christmas travel crush that raise the amount airlines must pay to travelers for lost bags and if they fail to notify passengers about hidden fees. Another recently implemented rule requires airlines to pay higher bump fees when travelers who buy tickets wind up without a seat.

Some who closely monitor air traffic said the modest moves were welcome, but don't address the heart of the problem.

“It had marginal impact” last year, said David A. Castelveter, vice president for communications at the Air Transport Association, a trade group representing major airlines. “The main reason for the good performance we saw over both holidays last year was good weather.”

The union representing air traffic controllers also said last year's efforts made little difference, and that this year's steps are unlikely to provide any significant relief either.

“It is all for show and, frankly, this show is getting quite tiresome to the American traveling public that has gotten fed up with mounting delays and FAA mismanagement that has degraded the system during the current administration,” National Air Traffic Controllers Association spokesman Doug Church said.