United Mileage Plus members can ski away with up to 5,000 bonus miles for booking a ski vacation through United Vacations. Members booking a roundtrip flight and hotel package of $3,000 or more will earn 2,500 bonus miles per person for ski trips booked by Feb. 29 and completed by April 30, 2008. You can choose from popular ski resorts in Canada, Colorado and at other locations throughout North America. To book, go to http://insideflyerus.wpengine.com/link/?761 and use promo code JANMPSKI.

Southwest Rapid Rewards members can save $75 per reservation on a Southwest Airlines Vacations ski package. To receive the discount, use promo code RRSKI75 when booking your vacation package of three nights or longer to any Albuquerque, Denver, Lake Tahoe (via Reno) or Salt Lake City area ski resort at southwestvacations.com. Reservations must be made between now and April 2 for travel through April 30, 2008 and a seven-day advance purchase is required.

Alaska Airlines Mileage Plan members will earn 1,500 bonus miles (in addition to actual miles traveled) when booking a Kids Fly, Ski and Stay Free ski vacation online at alaskaair.com. One child aged 11 and under can travel free per accompanying adult 18 years of age or older. Ski packages include roundtrip airfare for one adult and one child, a minimum three-night stay and lift tickets. Packages to Sun Peaks Resort, B.C. are available for purchase between now and March 24 for stays through March 30, 2008. Packages to Whistler, B.C. can be purchased through March 31 for travel through April 10, 2008.

Continental OnePass members can earn 500 bonus miles for every roundtrip ski package booked through www.covacations.com. Packages are available to Beaver Run Resort in Breckenridge, Colo., The Canyons Grand Summit Hotel in Park City, Utah and the Resort at Squaw Creek in Lake Tahoe, Calif. And through Oct. 11, 2008, when you stay a minimum of seven nights, your last night is free at Squaw Creek. Book a stay for 10 nights, and your last two nights are free.

And if you need a rental vehicle on your next ski trip, Avis is offering bonus Midwest or Delta miles, up to a $50 discount, unlimited mileage and a free ski rack rental when you rent a SUV for a minimum of five days. The offer is valid until April 30, 2008 at participating Avis airport locations in the U.S. and Canada. Use discount number (AWD) K850117 for double Midwest miles or K817638 for 2,500 bonus Delta miles and visit http://insideflyerus.wpengine.com/link/?765 to make reservations.