The Thanksgiving holiday getaway is underway, with millions taking to cars, trains and planes to reach their destinations.

If travel experts' outlooks are accurate, the busiest day for flights will be today (Tuesday), while the overall busiest travel day will be Sunday, Nov. 30.

Just shy of 82 million Americans are expected to travel 50 miles or more to their destinations, which would set a record, according to AAA.

Showers and thunderstorms caused travel headaches on Monday across the Lone Star State, with delays and cancellations reported at Dallas–Fort Worth International (DFW), Dallas Love Field (DAL), George Bush Intercontinental Airport (IAH) and Houston's William P. Hobby (HOU).

In Florida, warm overnight temperatures combined with moisture led to dense fog along I-10, I-75, I-4

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