As a deadly storm makes its way across the East Coast, more than 200 airline flights have been canceled and more than 5,000 have been delayed on the busiest travel day of the year.

More than 200 flights were canceled and more than 5,000 were delayed by a deadly storm that is on track to pounce on the East Coast on the busiest travel day of the year.

The airports hardest hit by the cancellations and delays so far were Charlotte Douglas International, Chicago's O'Hare International, Denver International and Cleveland Hopkins International, according to the flight monitoring site Flightstats.com.

The storm, moving through the Southeast on Tuesday, is responsible for 11 deaths. It is headed for the East Coast, home to the country's busiest air space.

The AAA has predicted that 43.4 million Americans will travel at least 50 miles for Thanksgiving, with 3.17 million traveling by air.

The Wednesday before Thanksgiving is expected to be the busiest travel day of the year, with 37% of holiday travelers starting their trips that day, the AAA said.

In anticipation of the storm, 104 flights scheduled to depart tomorrow have already been canceled, most at Boston's Logan International, Nantucket Memorial in Massachusetts and New York's LaGuardia Airport, according to Flightstats.com.

At least four airlines -- Delta, US Airways, United and JetBlue -- have announced that they will waive the fees they charge to change travel plans for travelers flying during the storm.

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