Some prices up, others down for Thanksgiving travelers

(CBS) -- Today is one of the busiest days of the year for domestic air travel.

The TSA expects to screen more than 26 million people during the 12-day Thanksgiving travel period.

According to AAA, consumers are paying around 23% less for flights this year. A round-trip flight is averaging around $157, the cheapest since 2013.

But travelers won't be so lucky if renting a car. 89% of Thanksgiving travelers will be driving, and the daily car rental price is up 34% from last year.

Drivers will also have to pay the highest Thanksgiving gas prices since 2014. A tank of gas is averaging $2.54 a gallon, up $0.37 from last November.

AAA says the worst time to drive is between 3:00 p.m. and 7:15 p.m.

The best time to drive is actually Thanksgiving morning.

And a TSA tip if you're flying with food: turkey is fine in your carry-on, but that thanksgiving gravy you have to check. They can't go together, at least when it comes to traveling.