Found this great promotion for skiers in the US.

Fly free to Crested Butte, Colorado

Buy two airline tickets to Crested Butte ski resort, and the third one is free. The "Friends and Family Fly Free" program Crested Butte Mountain Resort | Specials is valid for travel between December 15, 2011, and April 8, 2012. There are no blackout dates during the Christmas or New Year's holiday period, but there are blackouts in January for the three-day Martin Luther King, Jr. weekend and in February for the Presidents' Day weekend. Crested Butte is an old-fashioned cowboy town surrounded by cattle ranches. The ski terrain ranges from gentle enough for kids and beginners in the aptly named Paradise Bowl to slopes that will challenge accomplished experts. Stay on the mountain at The Grand Lodge Crested Butte Mountain Resort | Crested Butte and ski in and out, or stay in town. Crested Butte is served by American, United, and Continental via Denver, Dallas, and Houston.