Black text above descending horizontal orange, red, and blue stripes over white background.
United Airlines "You're the Boss" ad campaign, which was used during 1976-77. The button was also printed in Hawaiian as " 'o 'oe ka haku." United's other slogans have included "The Main Line Airway," "United We Fly," and "Fly the Friendly Skies." United Air Lines was formed with the merger of Boeing Air Transport, National Air Transport, Varney Airlines and Pacific Air Transport in the 1930s. United is the world's largest airline when measured by number of destinations served (as of 2014).