Air Canada (888/247-2262, www.aircanada.com [1]) and its connectors offer scheduled flights to the two main cities and many larger towns within the province, including Calgary [2], Lethbridge, Medicine Hat, Edmonton [3], Grande Prairie, Fort McMurray [4], and High Level. Central Mountain Air (888/865-8585, www.flycma.com [5]) flies between Calgary and Edmonton, as well as farther afield to Lloydminster and British Columbian centers.
Links:
[1] http://www.aircanada.com
[2] http://www.moon.com/destinations/alberta/calgary
[3] http://www.moon.com/destinations/alberta/edmonton
[4] http://www.moon.com/destinations/alberta/edmonton/excursions-edmonton/fort-mcmurray
[5] http://www.flycma.com