FSX. The last Orbx scenery released is an airfield located in the eastern border of NA BLUE Northern Rockies mountains, in the south of Calgary, Alberta. It's free to download but is it good ? Up to you to judge.
Claresholm in winter
Typical town in NA BLUE NRM
CEJ4 in summer
Where to download ?
(look for CA CEJ4 Claresholm industrial, 138,9 MB)
Also free near Calgary, High River CEN4.