Thanksgiving holiday travel begins at Philadelphia airport

PHILADELPHIA (WPVI) -- The Thanksgiving travel rush kicks off Friday morning.

Many people are breathing a sigh of relief at Philadelphia International Airport, now that all gates are reopened and running after the government shutdown.

Roughly one million passengers are expected to pass through PHL between Friday and December 2, making it another record-breaking year.

RELATED: Thanksgiving travel tips: Best and worst days to fly or drive

Sunday, Nov. 30, is predicted to be the busiest air travel day, according to data from aviation analytics company Cirium.

ABC News' Ginger Zee breaks down flood threats and what the weather could look like during the week of Thanksgiving.