The Cheapest Days to Buy Stuff

From SmartMoney.com

Airplane Tickets
When to Buy: Wednesday morning.
Why: "Most airfare sales are thrown out there on the weekend," says travel expert Peter Greenberg, a.k.a. The Travel Detective. Other airlines then jump into the game, discounting their own fares and prompting further changes by the first airline. The fares reach their lowest prices late Tuesday or early Wednesday.

Cars
When to Buy: Monday.
Why: "Car dealers live for the weekend, which is when they make most of their sales," says Phil Reed, consumer advice editor for Edmunds.com. "On Mondays, the low foot traffic makes it seem like the weekend will never come." That dealer desperation, paired with fewer consumers on the lot, give you more negotiating power.

Clothing
When to Buy: Thursday evening.
Why: That's the day when stores stock their shelves for the weekend, and when many retailers start their weekend promotions, says Kathryn Finney, author of "How to Be a Budget Fashionista."

Department-Store Wares
When to Buy: Saturday evening.
Why: Department stores have a lot to mark down for their Sunday circulars, so they frequently start the process on Saturday evenings before store closing.

Dinner Out
When to Buy: Tuesday.
Why: Most restaurants do not receive food deliveries over the weekend. "Sunday is the garbage-can day of the week," says Kate Krader, senior editor at Food & Wine magazine. "No doubt, they're cleaning out their fridges. Tuesdays, they're starting fresh."

Entertainment
When to Buy: Wednesday.
Why: Plenty of movie theaters, amusement parks and museums offer extra discounts to consumers who visit midweek.

Gas
When to Buy: Thursday, before 10 a.m.
Why: The price of oil isn't the only factor influencing costs at your local pump. Consumer usage plays a role, too — and weekend demand is high, says Jason Toews, co-founder of GasBuddy.com, a price-monitoring site. Prices usually swing upward on Thursdays as travelers fuel up to head out the following day. By hitting the pump before 10 a.m. (when many station owners change their prices), you'll beat the rush and the price jump.

Groceries
When to Buy: Sunday — or Tuesday.
Why: Maximize savings by combining store sales, which run from Wednesday to Tuesday, with the latest round of coupons from your Sunday paper, says Mary Hunt, publisher of Debt-Proof Living, a money-saving newsletter. "It's a smart idea to wait until you have those in hand to match up with the week's sale items," she says.

Hotel Rooms
When to Buy: Sunday.
Why: There are two kinds of hotel managers, and the kind that won't give you a discount on your room rate has Sundays off, says Greenberg. Call the hotel directly, and ask to speak with the manager on duty or the director of sales. These employees are open to negotiation, he says. They'd rather have a booked room at a discounted rate than an empty room.