On various dates in October, Allegiant Air will start to service 4 additional destinations from Phoenix -Mesa.  Fares to Eugene, OR and Great Falls, MT as well as to Medford, OR and Springfield-Branson, MO will range from $69 one-way to $109 one-way depending on the route.  These fares are currently easy to find on Allegiant's user-friendly booking calendar.  Bookings must be made by August 27, 2008  and travel completed by January 31, 2009.  Some restrictions apply and can be found on their site only.   These routes are  served twice weekly in each direction at present.   Get 'em while they're hot!