Travelers using the United Airlines DEN Terminal who are departing from Denver can take advantage of a number of services, such as mobile check-in, self-service kiosks, and luggage drop choices. Concourse B is also convenient for both business and pleasure passengers because it has pleasant seating areas, workplaces, and charging stations. By streamlining its connections at DEN, United Airlines has also made it easier for travelers with layovers to get around the airport. For example, an underground train that links Concourse B to the other concourses and the main terminal is one of the many ways the airline has made this possible.