United Airlines

United Airlines, Inc.
	File:United Airlines logo.svg Logo of United Airlines
Company type	Public
Industry	Airline
Founded	1926
Founder	Walter Varney (founder of predecessor Varney Air Lines)
Headquarters	Chicago, Illinois, United States
Area served	Worldwide (six continents)
Products	Passenger air transport, cargo transport
Website	www.united.com

United Airlines, Inc. stands as a prominent American airline based in Chicago, Illinois, operating an extensive network both domestically and internationally across six continents, offering more destinations than any other airline. Its regional flights are operated by independent partners under the United Express brand, which supports its eight primary hubs. As a founding participant of the Star Alliance, United significantly broadens its global connectivity.

The airline’s roots trace back to the late 1920s, originating from several carriers, the earliest being Varney Air Lines, established in 1926 by Walter Varney, who also played a role in founding the predecessor of Continental Airlines. This lineage makes United the longest-standing commercial airline in the United States. It has maintained a position among the world’s largest airlines, largely due to its strategic mergers and acquisitions over time.

Destinations

By 2025, United Airlines serves an extensive array of international destinations, underscoring its broad network and targeted expansion efforts. Key markets include:

... [Table continues with major cities and hubs globally] ...

Country or Territory	City	Airport	Notes
Antigua and Barbuda	Coolidge	V. C. Bird International Airport
Argentina	Buenos Aires	Ministro Pistarini International Airport
Aruba	Oranjestad	Queen Beatrix International Airport
Australia	Adelaide	Adelaide Airport	Service commences December 11, 2025
		Brisbane	Brisbane Airport
		Cairns	Cairns Airport	Service discontinued
		Melbourne	Melbourne Airport
		Sydney	Sydney Airport
Bahamas	Nassau	Lynden Pindling International Airport
Bahrain	Manama	Bahrain International Airport	Service discontinued
Barbados	Bridgetown	Grantley Adams International Airport
Belgium	Brussels	Brussels Airport
Belize	Belize City	Philip S. W. Goldson International Airport
Bermuda	Hamilton	L.F. Wade International Airport
Bonaire	Kralendijk	Flamingo International Airport
Brazil	Rio de Janeiro	Galeão International Airport
		São Paulo	Guarulhos International Airport
		Belo Horizonte	Tancredo Neves International Airport	Service discontinued
Canada	Calgary	Calgary International Airport
		Edmonton	Edmonton International Airport
		Halifax	Halifax Stanfield International Airport
		Montreal	Montréal–Trudeau International Airport	Seasonal service
		St. John's	St. John's International Airport	Service discontinued
		Toronto	Toronto Pearson International Airport
		Vancouver	Vancouver International Airport
		Winnipeg	Winnipeg James Armstrong Richardson International Airport	Service discontinued but scheduled to resume in 2024
Cayman Islands	Grand Cayman	Owen Roberts International Airport
Chile	Santiago	Arturo Merino Benítez International Airport
China	Beijing	Beijing Capital International Airport
		Shanghai	Shanghai Pudong International Airport
		Chengdu, Hangzhou, Xi'an		Services discontinued
	Colombia	Bogotá	El Dorado International Airport
	Colombia		Medellín	José María Córdova International Airport
Costa Rica	Liberia	Daniel Oduber Quirós International Airport
Costa Rica		San José	Juan Santamaría International Airport
Croatia	Dubrovnik	Dubrovnik Airport	Seasonal service
Cuba	Havana	José Martí International Airport
Curaçao	Willemstad	Curaçao International Airport	Seasonal service
Denmark	Copenhagen	Copenhagen Airport	Service discontinued
Dominican Republic	Puerto Plata	Gregorio Luperón Intl.
		Punta Cana	Punta Cana Intl.
		Santiago de los Caballeros	Cibao Intl.
		Santo Domingo	Las Américas Intl.

United Airlines operates major hubs in key U.S. metropolitan areas such as Chicago O'Hare, Houston George Bush Intercontinental, Newark Liberty, San Francisco, Washington Dulles, and Denver, which underpin its strategy for comprehensive domestic and international connections.

The carrier has actively expanded its presence in Asia-Pacific regions by introducing routes to developing markets including Adelaide (launching late 2025), Bangkok (from October 2025), and Ho Chi Minh City (starting October 2025), highlighting its focus on growth within promising economic zones.

Adjustments to the route network have been made in response to shifting market conditions and geopolitical influences, resulting in the cessation of services to locations such as Bahrain, Qatar, Russia, and several European cities to optimize operational efficiency and market positioning.

Seasonal flights targeting leisure destinations like Croatia, Iceland, Portugal, and Caribbean islands illustrate United’s balanced approach catering to both business travelers and vacationers.

Globally, United supports over 300 destinations spanning six continents through a mix of direct operations and collaborations with subsidiaries and alliance partners, reinforcing its competitive edge within the aviation sector.

This vast network structure bolsters United’s revenue by addressing varied customer segments including corporate clients, leisure passengers, and freight operations.

In summary, United Airlines’ network strategy reflects deliberate leadership designed to uphold its status as a premier global airline supported by a solid corporate framework that fosters sustainable financial success.

Hubs

United Airlines operates eight key hubs within its hub-and-spoke network, strategically positioned to maximize market presence across vital regions:

Chicago–O'Hare – serves as the Midwest hub
Denver – the main domestic hub and the busiest in terms of passenger volume
Guam – the smallest hub, acting as a gateway in the mid-Pacific region
Houston–Intercontinental – Southern hub and entry point for Latin America
Los Angeles – secondary West Coast hub, gateway for transpacific and Latin American routes
Newark – primary East Coast hub, gateway for transatlantic flights
San Francisco – principal West Coast hub, transpacific gateway
Washington–Dulles – secondary East Coast hub with a focus on transatlantic connections

United Express

United Express provides regional flight services that complement United’s mainline network, improving connectivity and expanding reach into smaller markets.

Alliance and codeshare agreements

As a prominent member of the Star Alliance—a global coalition of 25 airlines operating over 5,000 aircraft to more than 1,300 airports across 195 countries—United Airlines significantly extends its international footprint and competitive positioning through this partnership, benefiting from broad route networks and shared lounge access.

Additionally, United has established codeshare partnerships with a variety of international carriers to enhance its service portfolio and access new markets. These partners include:

Aegean Airlines
Aer Lingus
Air Canada
Air China
Air India
Air New Zealand
All Nippon Airways
Asiana Airlines
Austrian Airlines
Avianca
Azul Brazilian Airlines
Brussels Airlines
Copa Airlines
Emirates
Ethiopian Airlines
Lufthansa
Singapore Airlines
Swiss International Air Lines
Turkish Airlines
Virgin Australia

Fleet

United Polaris

United Polaris represents United Airlines’ premium international business class offering, featuring fully flatbed seats equipped with multiple storage compartments, charging outlets, lumbar support, upgraded dining options, and various amenities.

The Polaris product is available on all Boeing 757-200s, 767s, 777-300ERs, 787s, and internationally configured 777-200ERs. The 757 Polaris cabin uses a 2-2 seating arrangement where window seats lack direct aisle access; in contrast, widebody aircraft provide aisle access for every seat—767s feature a 1-1-1 setup while 777s and 787s employ a 1-2-1 configuration.

In May 2025, United revealed plans for an enhanced Polaris suite debuting in 2026 on premium-configured Boeing 787-9 aircraft. These suites will offer sliding doors and larger 19-inch 4K touchscreen displays. The front row will showcase Polaris Studio suites with expansive 27-inch screens, companion ottomans, and upgraded amenities; forward middle seats will be angled toward each other while rear middle seats will face the aisles.

Passengers flying Polaris enjoy exclusive check-in counters, priority security lanes where available, pre-flight beverages, multi-course meals served with table linens, priority boarding and baggage handling, plus access to United Polaris Lounges as well as United Club or partner lounges.

United First and United Business

United First denotes the premier service class on domestic flights, while on international routes it is marketed as United Business. On narrowbody aircraft, passengers experience a seat pitch, whereas domestic Boeing 777-200ERs are equipped with fully flat-bed seats arranged in a 2-4-2 configuration. Travelers enjoy benefits such as priority boarding, expedited baggage handling, complimentary alcoholic beverages, free meals on extended flights, and access to exclusive check-in counters.

In 2015, United launched a redesigned first-class seat for domestic flights featuring leather upholstery, supportive headrests, granite cocktail tables, and integrated tablet holders. This upgrade debuted on Airbus A320 family aircraft before being extended throughout the entire fleet.

By 2019, the airline aimed to expand its first and business class seating by 1,600 seats across various aircraft. This included introducing the Bombardier CRJ550—a 50-seat regional jet with a premium-focused layout—bolstering United's position in the upscale travel market.

In 2021, United revealed refreshed interiors for its narrowbody fleet, which began to roll out on Airbus A321neos in 2023, enhancing passenger comfort and reinforcing the airline’s competitive edge.

United Premium Plus

United Premium Plus represents the carrier's international premium economy offering available on all widebody aircraft configured for international service. Seat arrangements differ by aircraft model: 2-2-2 on Boeing 767s, 2-3-2 on 787s, and 2-4-2 on 777s. This cabin is also featured on premium transcontinental routes and select flights to Hawaii operated by international widebodies.

In May 2025, an upgraded version of Premium Plus was introduced for Boeing 787-9 aircraft, incorporating privacy dividers and built-in reading lights to enhance passenger comfort.

Compared to Economy and Economy Plus cabins, Premium Plus provides wider seats with increased legroom along with leg and foot rests. The dining experience is elevated with china dishware and complimentary alcoholic drinks. On international flights, passengers receive enhanced blankets, pillows, and amenity kits. The full rollout of this product was completed in 2019 after an initial launch phase starting in mid-2018 when it was still marketed as part of Economy Plus.

United Economy

United Economy is the standard class offered on all United aircraft, featuring a seat pitch of 31 inches and a recline of approximately three inches. Many models—including the Airbus A321, Boeing 737 MAX, 767, 787, 757-200, and most 777s—are equipped with individual touchscreen entertainment systems. Other planes provide streaming entertainment accessible via onboard WiFi to personal devices. Certain Boeing 737 aircraft also offer DirecTV for live television and movies. Under the United NEXT program, all mainline aircraft are scheduled to have personal touchscreens installed by the end of 2025.

Food and beverage services differ depending on the route. On domestic and short-haul international flights (such as those to the Caribbean and parts of Latin America), passengers may purchase larger snack items or meals depending on flight duration. For long-haul international journeys, complimentary meals are provided along with free beverages and snacks; beer and wine are included at no cost while other alcoholic beverages are available for purchase. Meal service typically begins with snacks after takeoff followed by main courses and desserts; longer flights also feature a pre-arrival meal like breakfast or a sandwich.

Economy Plus

Economy Plus seating, positioned in the front and exit rows of the economy section, provides enhanced recline and an increased pitch, offering a total of greater recline and pitch compared to standard economy seats. The onboard amenities and services remain consistent with those found in United Economy.

Access to Economy Plus is complimentary for all MileagePlus Premier members. Those holding Premier 1K, Platinum, or Gold status are able to reserve these seats at the time of booking, whereas Silver members can select them during check-in.

Basic Economy

Basic Economy represents United's most affordable fare on certain routes, delivering most of the usual economy features but with limitations on seat selection and generally assigning passengers to the rear of the cabin. Passengers are restricted from bringing carry-on bags and may only bring one personal item that fits beneath the seat.

Individuals traveling on Basic Economy fares are excluded from some MileagePlus and Premier privileges, such as complimentary upgrades.

Frequent flyer programs

MileagePlus serves as United Airlines' loyalty program, featuring published tiers including Premier Silver, Gold, Platinum, and 1K; additional unpublicized tiers encompass United Global Services and Chairman's Circle.

As a member of Star Alliance, United grants Star Alliance Silver status to Premier Silver members and Star Alliance Gold status to those ranked Premier Gold or higher, extending alliance-wide benefits.

Airport lounges

The United Club lounge caters to customers flying with United Airlines and United Express, succeeding the former United Red Carpet Club and Continental Airlines Presidents Club after the merger with Continental.

Polaris lounges are designed for long-haul travelers in United's Polaris business class as well as Star Alliance first and business class passengers, featuring amenities such as à la carte dining, shower facilities, and sleeping pods.

Ownership and structure

United Airlines operates under its publicly traded parent company, United Airlines Holdings, Inc., a Delaware corporation listed on Nasdaq under the ticker symbol . As of 2025, its market capitalization surpasses $35 billion. Nearly all financial activity within the holding company stems from United's operating revenues and expenses.

The airline’s headquarters are located in Chicago’s Willis Tower. In 2025, United was ranked 83rd on the Fortune 500 list based on total revenue. Through United Airlines Holdings, it owns a 9.9% equity stake in Mesa Airlines, a regional carrier operating under the United Express brand.

Business trends

Key financial and operational metrics for United Airlines at each calendar year-end are summarized below:

Year	Revenue (million US$)	Net income (million US$)	Assets (million US$)	Employees (FTE)	Passengers (millions)	Load factor (%)	Aircraft
2011	37,110	837	37,988	87,000	96	82.8	701
2012	37,152	(723)	37,628	88,000	94	82.9	702
2013	38,279	571	36,812	87,000	91	83.8	693
2014	38,901	1,132	36,595	84,000	138	83.6	691
2015	37,864	7,340	40,861	84,000	140	83.4	715
2016	36,556	2,263	40,140	88,000	143	82.9	737
2017	37,736	2,131	42,326	89,800	148	82.4	744
2018	41,303	2,122	49,024	92,000	158	83.6	770
2019	43,259	3,009	52,611	96,000	162	84.0	777
2020	15,355	(7,069)	59,548	74,400	58	60.2	812
2021	24,634	(1,964)	68,175	84,100	104	72.2	826
2022	44,955	737	67,358	92,800	144	83.4	868
2023	'53,717'	'2,618'	'71,104'	'103,300'	'165'	'83.9'	'945'
2024	'57,063'	'3,149'	'74,083'	'107,300'	'174'	'83.1'	'994'

This table illustrates United Airlines’ post-pandemic recovery and growth trajectory through rising revenues and passenger numbers supported by fleet enlargement and workforce growth. The airline’s commitment to enhancing operational efficiency and expanding market presence is evident in improving load factors and net income since 2021.

Headquarters and other facilities

United Airlines' main office is situated in the Willis Tower at 233 South Wacker Drive, Chicago, Illinois.

Originally headquartered in Elk Grove Township, a suburb of Chicago, United relocated its corporate offices in 2007 to 77 West Wacker Drive within the Chicago Loop, motivated by a $5.5 million incentive package from the City of Chicago. Later, in 2010, the airline accepted an additional $35 million incentive to transfer 2,500 employees from Elk Grove Township to Willis Tower. On May 31, 2012, United inaugurated its operations center spanning twelve floors in Willis Tower. In 2019, the airline extended its lease at Willis Tower through 2033 and announced plans to add a rooftop deck as well as a dining hall on the building’s fourth floor.

The former Elk Grove Township campus was incorporated into the Village of Mount Prospect and currently functions as an IT operations site, which includes a data center established in 2013.

United also maintains a substantial footprint in downtown Houston, leasing space across seven floors since 2017. Additional key facilities encompass flight crew training centers located in Denver and Houston, a major aircraft maintenance base in San Francisco, along with customer service call centers in both Houston and Chicago.

The United Aviate Academy, positioned at Phoenix Goodyear Airport in Arizona, is unique as the only flight school wholly owned by a major U.S. airline. Launched in 2022, it serves as the central training hub for United’s pilot career development initiative aimed at mitigating pilot shortages and enhancing diversity within the industry. Students receive instruction under FAA Part 141 regulations progressing from private pilot to commercial pilot certifications. Graduates are eligible to enter United’s Aviate program as first officers. The academy’s goal is to train 5,000 pilots by 2030 with an emphasis on increasing opportunities for women and underrepresented minorities.

Brand image

The "tulip" logo used by United before the merger was designed in the early 1970s by Saul Bass to update the airline’s original shield emblem from the 1930s. This ribbon-inspired design represented the dynamic movement of flight. After merging with Continental Airlines in 2010, United retained its name but adopted Continental’s "globe" logo and livery, which were created by Lippincott in 1991.

Marketing themes

United's initial slogan, "The Main Line Airway," emphasized its crucial New York-Chicago-San Francisco route network. In 1965, it introduced "Fly the Friendly Skies," a tagline that remained until 1996 and was revived in 2013 following a period featuring slogans such as "It's time to fly" and "Let's fly together" after the merger. The reintroduction of "Fly the Friendly Skies" formed part of a comprehensive advertising campaign that incorporated George Gershwin's 1924 piece "Rhapsody in Blue" with narration by actor Matt Damon.

In 1976, United paid $500,000 to license "Rhapsody in Blue," underscoring its dedication to brand identity despite copyright expenses. Although the composition entered the public domain in 2020, United continues to use it as its signature theme post-merger with Continental, reinforcing brand consistency and market presence.

Environmental initiatives

Since more than 98% of United's greenhouse gas output originates from jet fuel consumption, the airline’s environmental approach centers on enhancing fuel efficiency during operations and investing in sustainable, low-carbon alternative fuels.

On August 23, 2011, United launched paperless flight decks by providing pilots with 11,000 iPads, eliminating roughly 38 pounds of paper manuals per device. This move not only cut down on paper usage and printing expenses but also lowered fuel consumption and improved both safety and operational effectiveness.

United marked a milestone on November 7, 2011, by conducting the first commercial flight powered by a biofuel blend derived from microbes—comprising 40% algae-based Solajet fuel mixed with 60% conventional petroleum—underscoring its dedication to eco-friendly aviation practices.

In January 2013, the airline committed to outfitting its Boeing 737NG aircraft with Aviation Partners Boeing’s Split Scimitar Winglets. These winglets are projected to reduce aerodynamic drag significantly, resulting in annual fuel savings exceeding $250 million.

In June 2015, United invested $30 million in Fulcrum BioEnergy to facilitate the creation of up to five refineries near key U.S. hubs focused on producing sustainable aviation fuel (SAF). These facilities aim to yield as much as 180 million gallons of SAF annually, with United pledging to purchase at least half of that volume—90 million gallons per year—for a decade, representing the largest alternative aviation fuel commitment to date.

By March 2016, United became the pioneer airline operating ongoing commercial flights utilizing sustainable biofuels sourced from AltAir Fuels. This initiative achieves a carbon emissions reduction exceeding 60%. The airline agreed to acquire up to 15 million gallons over three years for use at Los Angeles International Airport.

In 2016, United collaborated with Clean the World to recycle hygiene products from premium amenity kits for charitable distribution. This program diverted about 60,000 pounds of waste from landfills while promoting global hygiene education efforts.

Beginning in 2017, United partnered with Audubon International to safeguard raptors near airports in the New York region by relocating them to appropriate habitats, demonstrating its commitment to environmental conservation beyond aviation fuel initiatives.

Expanding its footprint in sustainable aviation fuel globally, United became the first U.S.-based carrier in 2022 to procure SAF internationally at Amsterdam’s Schiphol Airport. The airline further extended SAF operations to San Francisco International and London Heathrow Airports in 2023 and planned additional rollouts at Chicago O'Hare and Los Angeles International Airports in 2024.

Employee relations

United Airlines played a foundational role in flight attendant unionization through the establishment of the Association of Flight Attendants-CWA (AFA) in 1945 by five United flight attendants. The AFA has consistently represented United’s flight attendants since then; their contract became subject to renegotiation in August 2021, with an overwhelming 99.9% voting in favor of authorizing strike action as of August 28, 2024.

The International Brotherhood of Teamsters represents maintenance technicians at United, with their contract set for renegotiation on December 5, 2024.

Approximately 34,000 employees working in Fleet Service, Passenger Service, Reservations, and related areas are represented by the International Association of Machinists and Aerospace Workers (IAM) District 141. Their current contract is amendable beginning May 1, 2025.

United’s pilots constitute the largest pilot group worldwide, numbering over 18,000 members and represented by the Air Line Pilots Association (ALPA). Founded in 1931 by United Captain David L. Behncke alongside others, ALPA prioritizes enhancing aviation safety standards. The pilots’ existing contract is subject to renegotiation on September 30, 2027, following recent ratification of a new agreement valued at more than $10 billion.

Accidents and incidents

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Source: United Airlines Accidents and Incidents History at Aviation Safety Network.

Flight 976

On October 19, 1995, United Airlines Flight 976, operating from Buenos Aires to New York City, became the scene of severe disruption caused by an intoxicated investment banker. Despite restrictions against serving additional alcohol, the passenger continued to drink, subsequently threatening crew members and engaging in violent behavior. He physically attacked a flight attendant, defecated onboard, and inflicted significant damage to the aircraft. A diversion was declined due to the presence of prominent diplomats among the passengers.

Following arrival, law enforcement agents from the FBI detained the individual, charging him with interfering with flight operations and threatening crew personnel. The passenger admitted guilt, was fined $5,000, compensated the airline nearly $50,000 for cleanup costs and passenger reimbursements, and received a two-year probation sentence. This event is recognized as one of aviation’s most notorious instances of air rage.

Animal transport

In response to advocacy by PETA in 2013, United ceased transporting monkeys destined for laboratory research, ending its status as the final North American commercial airline to do so. United handles a greater volume of animal shipments and operates flights with longer average stage lengths than any other US carrier. Between 2012 and 2017, it accounted for approximately one-third of animal fatalities on domestic flights.

Starting March 20, 2018, United suspended its PetSafe program, stopping acceptance of new cargo bookings for pets. This action followed initiatives to identify pet carriers in cabins with conspicuous tags and legislative efforts in the US Congress aimed at prohibiting pets in overhead compartments. These developments were prompted by a widely publicized incident involving a dog’s death after placement in an overhead bin during a United flight, underscoring ongoing challenges in safely transporting animals and attracting regulatory attention.

Cyber security issues

United launched a bug bounty program that rewards hackers with airline miles for uncovering vulnerabilities in its web systems; by July 2015, two participants had each earned one million miles. This program was introduced after software malfunctions caused flight delays linked to dispatch and reservation system errors. Alongside this initiative, United performs internal security assessments and collaborates with cybersecurity organizations.

In July 2019, security researcher Sam Jadali revealed the DataSpii data breach involving clickstream analytics firm DDMR and marketing company Nacho Analytics. Nacho Analytics provided subscribers access to live data including check-in details of United Airlines passengers. The breach exposed sensitive passenger information such as surnames, booking confirmation numbers, and current whereabouts through URLs on United’s website. DataSpii collected this information from millions of Chrome and Firefox users via compromised browser extensions that exploited United’s practice of embedding personally identifiable information (PII) within URLs. DDMR then distributed this confidential data widely to third parties, raising serious privacy concerns.

2017 passenger removal

On April 9, 2017, United Airlines flight 3411, traveling from Chicago-O'Hare to Louisville, needed to free up four seats for crew members. After offering $800 travel vouchers without any volunteers stepping forward, United selected four passengers to disembark. While three complied voluntarily, Dr. David Dao declined due to his professional responsibilities. Security personnel then physically removed him from the aircraft, resulting in injuries such as a concussion and a broken nose. The incident rapidly gained widespread attention on social media platforms, provoking significant public backlash.

United's CEO at the time, Oscar Munoz, initially characterized Dao as "disruptive and belligerent," issued an apology referring to the situation as "re-accommodating" passengers, and defended the employees’ conduct—remarks that were broadly perceived as insensitive. Subsequently, Munoz issued a comprehensive apology and took full accountability for the episode. Dr. Dao reached a confidential settlement with United Airlines and the airport police.

In response to the controversy, United’s board chose not to appoint Munoz as chairman and introduced executive compensation metrics linked to customer satisfaction levels. The airline experienced a 70 percent increase in customer complaints following the event, which negatively affected its reputation and underscored the necessity for enhanced focus on customer service within its corporate strategy.

Mail-scan fraud

In February 2021, the United States Department of Justice imposed a $49 million penalty on United Airlines for fraudulent activities connected to contracts with the U.S. Postal Service concerning international mail transport. From 2012 through 2015, United submitted automated scan data that inaccurately suggested adherence to International Commercial Air regulations and precise delivery timings. Certain employees deliberately concealed these inaccuracies from the Postal Service, compromising both operational integrity and financial outcomes for the airline.

External links

Hemispheres inflight magazine
United Airlines Cancellation Policy (https://airlinespolicy.com/cancellation-policy/united-airlines-cancellation-policy/)
UAL.com Official website archive
BBB Profile
KION de Mexico business info