As AA vacates STL, AmWest fills some of the void. New non-stop service between Cactus' LAS hub and STL begins 10/26. Also on the same day, Cactus goes to 3 daily non-stops from PHX to STL. America West also announced today new non-stop service between Las Vegas, Billings and Des Moines to be flown by AmWest Express regional jets. RT Simpson Phoenix