DALLAS — American Airlines is getting a new look.

The airline showed off the first plane bearing a new logo and paint job at Dallas/Fort Worth International Airport on Thursday.

The familiar red, white, and blue stripes along the side of the fuselage are gone, replaced by a new logo and ‘‘American’’ in large letters on the silver body. Red and blue horizontal bars are emblazoned on the tail.

‘‘We thought it was time to update the look — it’s been 40 years,’’ Thomas Horton, chief executive of American’s parent, AMR Corp., said in an interview.

American expects about one-third of its fleet, or roughly 200 planes, will sport the new look by the end of the year, with the rest to be repainted within five years.