The most hectic travel days of the year are approaching, with the TSA expecting what may be the busiest Thanksgiving travel period on record. Those flying with food to bring to their Thanksgiving feast should know in advance which holiday favorites are permitted on flights.

8. The TSA predicts that 3 million people will pass through airport security checkpoints on Sunday; more than that could break the record of 3.01 million set on the Sunday after the July Fourth holiday. Tuesday and Wednesday are expected to be the next busiest air travel days of Thanksgiving week.

As the Thanksgiving travel rush continues, airports and roads remain packed with travelers trying to reach their destinations.

If you plan on flying home with tasty Thanksgiving leftovers, be sure to pack them in the correct suitcase or else the TSA might flag your festive food at the airport.

The TSA advises travelers who bring food to carry it through security checkpoints or pack it in checked luggage. Since food often requires extra screening, it’s best to place these items in an easily accessible part of your carry-on and remove them for separate screening at the checkpoint.

Airline passengers traveling over Thanksgiving are permitted to carry turkey, stuffing and other food items with some restrictions through checkpoints, the Transportation Security Administration says.