The United airline is a founding member of Star Alliance, the world’s largest airline network, and operates an extensive international network. Founded on March 27, 1926, United was the first major airline in the world to provide passenger jet service. It is one of the oldest and longest-serving airlines in the United States.

To keep ticket prices relatively low, Allegiant offers a lower frequency of flights and no amenities such as frequent flier points or on-board entertainment. It also does not offer connecting service, with customers only able to purchase non-stop itineraries on its website.