United Airlines, Inc.

United Airlines, Inc. is a major American airline headquartered in Chicago, Illinois, operating an extensive domestic and international route network across the United States and six continents. As a founding member of the Star Alliance, United offers a comprehensive range of services to meet the diverse needs of its passengers.

Flight Services

United Airlines provides a variety of flight options, including:

• Domestic Flights: Serving 217 destinations within the United States, United ensures connectivity across major cities and regional hubs.
• International Flights: With 146 international destinations in 73 countries, United facilitates global travel, connecting passengers to key international markets.

Cabin Classes

United offers multiple cabin classes to cater to different passenger preferences:

• United Polaris: The airline's international business class product features seats that convert into 6-foot flatbeds, multiple storage areas, and improved dining and amenities.
• United Economy: Available on all aircraft, United Economy offers comfortable seating with personal entertainment options, including personal touchscreen televisions on many aircraft.

Loyalty Program

United's MileagePlus program allows frequent flyers to earn miles for flights and other activities, which can be redeemed for award flights, upgrades, and other benefits.

Sustainability Initiatives

United Airlines is committed to environmental sustainability, focusing on operational fuel efficiency and investments in sustainable aviation fuels (SAFs). The airline has been a pioneer in adopting SAFs, including flying the world's first commercial aviation flight on a microbially-derived biofuel in 2011.

United continues to invest in SAF innovation and collaborates with industry participants to support the development of sustainable aviation fuels.

Headquarters and Operations

United Airlines' headquarters are located at the Willis Tower in Chicago, Illinois. The airline operates major hubs at:

• Chicago–O'Hare
• Denver
• Houston–Intercontinental
• Los Angeles
• Newark
• San Francisco
• Washington–Dulles airports

Recent Developments

In May 2025, United Airlines unveiled its largest airport lounge to date—a 33,000-square-foot, two-floor United Club located in Terminal B at Denver International Airport.

Designed with tech-savvy travelers in mind, the lounge includes modern amenities like self-service E-Gates, multiple seating types, power ports with AC, USB-A, and USB-C outlets, and a dedicated private Wi-Fi network.

The space features a full bar, food buffet, electric fireplaces, unique Colorado cabin-inspired design elements, work booths, and a game room with a shuffleboard table. It also offers gender-inclusive restrooms and wellness rooms.

United Airlines continues to expand its global network, introducing new routes and increasing frequencies to existing destinations, thereby enhancing connectivity and providing passengers with more travel options.

Locations

United Airlines operates and has headquarters in several locations, including:

• Chicago, IL, USA: Headquarters at Willis Tower.
• Newark, NJ, USA: Major hub at Newark Liberty International Airport.
• San Francisco, CA, USA: Major hub at San Francisco International Airport.
• Los Angeles, CA, USA: Major hub at Los Angeles International Airport.
• Denver, CO, USA: Major hub at Denver International Airport.
• Houston, TX, USA: Major hub at George Bush Intercontinental Airport.
• Washington, D.C. (Dulles), USA: Major hub at Washington Dulles International Airport.
• Elizabeth, NJ, USA: Operational location.
• Chicago, IL, USA: Already listed as headquarters.