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Enterprise is offering half off three-day weekend rentals. All rentals must start on a Friday and be returned the following Monday.

Hertz' promotions this season include reduced weekend rates, and weekend and weekly discounts.

You can get up to $20 off a weekend rental or up to $30 off a weekly rate.

Alamo is featuring several promotions. Among them, you can save up to $25 off your rental or get discounts on extended weekends.

Advantage offer SUV rentals from $30 per day.

Save in a variety of ways when you pay with your AmEx.

National is offering several deals, including weekly, weekend, and one-way bargains.

Thrifty has deals for different regions around the U.S., plus special offers for AmEx cardmembers.