United Airlines has established itself as a leader in this industry. As one of the first to provide onboard flight attendants and a founding member of Star Alliance it is easy to see that they have put the needs of their customers first. In addition, United Airlines introduced us to Ted, which provides you with low-cost fares throughout the US and Mexico. United Airlines' largest traffic hub is the O'Hare International Airport in Chicago. It is also the most used airline for travelers heading to Asia and Hawaii. Other destinations include Europe and Latin America.