In the US, average annual food price inflation is about 2.5 per cent, but this year grocery food prices are running just 1 per cent higher than 2012 prices.

For the items most commonly associated with Thanksgiving meals, Corinne Alexander said some prices will be up a bit and others will be down slightly.

"We're expecting the overall Thanksgiving meal to be roughly the same price as last year and, potentially depending on what sort of in-store specials are being offered, you might even spend less this year than you did last year on Thanksgiving," she said.

Turkey, the main item on many Thanksgiving dinner menus, should cost consumers less this year. The US Department of Agriculture is predicting that wholesale prices for Eastern market whole turkeys will be between $1 and $1.06 per pound in the fourth quarter, compared with $1.06 per pound in 2012.

Dr Alexander said it's important for consumers to remember that the way wholesale prices translate to retail prices depends on individual retailers. The actual price paid also will vary depending on whether a shopper chooses a whole turkey or turkey parts; frozen or fresh birds; fresh, precooked or complete turkey meals; brand names; and the value of store coupons and price specials.

Often grocers will offer turkeys at a deep discount to encourage shoppers to purchase their other Thanksgiving items at a particular store, Dr Alexander said.

"Because turkey is a favorite loss leader, that's one of those items where savvy shoppers can look to coupons and store specials to really find the best price possible for their Thanksgiving turkey, and then the rest of the items for their Thanksgiving meal," she said.

Prices for other Thanksgiving staples will be a bit of a mixed bag. For example, cranberry prices are expected to be on par with last year. An abundant crop should keep prices from increasing, while strong demand will keep them from decreasing.

Sweet potatoes, another in-demand item, are expected to cost consumers about 10 per cent more than they did in 2012. White potato prices also are up by about 15 per cent this year compared with the record low prices last year.

On average, Americans spend about 10 per cent of their incomes for food. Dr Alexander said that the below average price increases this year could mean there's room in the family budget to add treats to the holiday meal.

But families affected by unemployment or minimal wage increases could spend up to 25 per cent of their incomes on food.

"For these families, any food price rise is significant," Dr Alexander said. "We should remember those who are less fortunate and share our food bounty."

When it comes to preparing this year's Thanksgiving feasts, consumers will pay more for energy than they did in 2012. Natural gas prices have increased by about 5 per cent and electricity prices by about 3 per cent since last fall.

Those traveling for a holiday meal will get some relief at the pump. Gasoline prices are down about 8 per cent compared with last year.