vagabond,

Starting 4/12/2015, on Sundays only, SKW5166 is in fact IAH/MIA. Departs IAH at 720A and arrives MIA at 1048A. SkyWest keeps a dedicated spare CRJ7 in IAH. Just to use yesterday as a measuring stick, when the weather is favorable, all 47 outbound flights pushed within 5 mins of their STD with a raw completion factor of 100%.