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Las Vegas, air/hotel, from $159

A rainbow illuminates the Stratosphere and the Las Vegas Boulevard 'strip'. Stay in Sin City on the cheap with an air/hotel package from United and Southwest Airlines, starting at $159.
A rainbow illuminates the Stratosphere and the Las Vegas Boulevard 'strip'. Stay in Sin City on the cheap with an air/hotel package from United and Southwest Airlines, starting at $159.Joe Cavaretta / AP file
/ Source: ARTHUR FROMMER'S BUDGET TRAVEL

United Vacations
The new allows travelers to save up to $100 or earn up to 7,500 bonus miles when booking a package with round-trip airfare and a minimum three-night stay. The discounted packages start at $159 for a three-night stay at and airfare out of Denver. The actual savings amount and mileage earned depends on the hotel booked. To earn the full rewards, you'll have to stay at pricey hotels, such as , , , , , , , , , and . Reward amounts for other hotels are $75 or 5,000 bonus miles and $50 or 2,500 bonus miles. For a list of participating hotels and applicable discounts see

When: Through Dec. 21, 2007.

Gateways: Denver, L.A., San Francisco; most major U.S. cities are available as gateways at additional cost.

Details: Use the at the time of booking for cash rewards, air miles, or entertainment. Read these before you book any Real Deal.

Book by: Dec. 21, 2007. Contact 888/328-6877, .

Southwest Airlines vacations
Southwest is offering discounts of up to $100 on round-trip airfare and accommodations at any Harrah's Entertainment property, such as , , , , , , and . The lowest-priced packages we found include airfare from Phoenix and start from $189 for two nights and $251 for three nights at the .

When: Nov. 1 – Dec. 19, 2007, for a $100 discount on a three-night stay; Sept. 16, 2007 – Feb. 26, 2008, for a $50 discount on a two-night stay.

Phoenix; add $45 from San Jose; $95 from Portland, Ore.; $120 from Kansas City (Mo.), Omaha; $125 from Philadelphia; additional cities available.

Details: Round-trip airfare and hotel accommodations are included. You'll also receive two credits through the toward a free round trip, which requires 16 credits (eight round trips). Packages must be booked at least seven days in advance. Airport taxes are an additional $31. Travel blackout dates are Dec. 20, 2007-Jan. 12, 2008. The lowest prices are valid for Monday and Tuesday departures. Rates may be higher for other days of the week, weekends, and holidays. The quoted sample prices are per person based on double occupancy for a two-night stay at the Imperial Palace.

Book by: Sept. 27, 2007.

Contact: 800-423-5683, .

The lowest round-trip fare between Denver and Las Vegas that we found on Sidestep is $138 in mid-November (U.S. Airways). For $21 more, United Vacations will cover the flight and three nights' accommodations — it's like getting the hotel almost for free. And between Denver and Vegas, we found a fare of $118 (Frontier Airlines). In comparison, Southwest Vacations includes the airfare and a two-night hotel stay for an additional $71.

Contest! to enter the Great Las Vegas Giveaway for a chance to win round-trip airfare, three nights at the , two spa treatments, two Cirque du Soleil tickets, and dinner for two.