LOS ANGELES — That other Thanksgiving tradition – congested highways and jammed airports – is getting underway with gas prices low and terrorism fears high.

An estimated 46.9 million Americans are expected to take a car, plane, bus or train at least 50 miles from home over the long holiday weekend, according to the motoring organization AAA. That would be an increase of more than 300,000 people over last year, and the most travelers since 2007.

Anyone trekking to a major airport should factor in 50 extra minutes on the road, according to the traffic date company INRIX – and that’s just getting to the airport, never mind getting through security.

Though there have been no changes to the nation’s terror alert status, the recent attacks in Paris, West Africa and elsewhere prompted the State Department to warn American travelers about the risks overseas.