This is a Canada Air regional jet. This jet is a narrow body aircraft that holds 50 people. This jet can go up to 1,860 miles. It has a similar design to the MD-80 and DC-9 yet smaller with a different fuselage. Major customers of this aircraft are United Express, Comair The Delta Connection (Above), ASA, America Southeast Air (Another member of the delta connection), US Air, Mesa (America West Regional), Air Canada, Air France, British Airways, Sabena, Crossair and Lauda Air. This photo was taken from airliners.net and photo credit goes to Brian Hill.