We love the great deals that Southwest offers to and from Denver. If you are considering skiing Keystone this spring, this is an amazing deal! From $39.00 each way, that is less than the cost of driving. If you are in Albuquerque, Amarillo, Lubbock, Oklahoma City, Omaha, and Salt Lake City, you are in luck. Hurry to the Southwest website because this is only a 72 hour sale!