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EX-21 12 ual_12312410kex21.htm EX-21 United Airlines Holdings, Inc - List of United Airlines Holdings, Inc. and United Airlines, Inc. Subsidiaries
Exhibit 21
            United Airlines Holdings, Inc. and United Airlines, Inc. Subsidiaries
(as of February 27, 2025)
EntityJurisdiction of Incorporation
United Airlines Holdings, Inc.Delaware
Wholly-owned subsidiaries*:
United Airlines, Inc.Delaware
● Air Wis Services, Inc.
Wisconsin
● Air Wisconsin, Inc.
Wisconsin
● Domicile Management Services, Inc. **
Delaware
● CAL Cargo, S.A. de C.V.**
Mexico
● CALFINCO Inc.
Delaware
● CALFINCO Caymans Ltd.
Cayman Islands
● Century Casualty Company
Vermont
● Continental Airlines de Mexico, S.A.**
Mexico
● Continental Airlines, Inc. Supplemental Retirement Plan for Pilots Trust Agreement    
Delaware
● Covia LLC
Delaware
● Mileage Plus Holdings, LLC
Delaware
● MPH I, LLC
Delaware
● Mileage Plus Marketing, Inc.
Delaware
● Mileage Plus, LLC
Delaware
● Mileage Plus Intellectual Property Assets, Ltd. ***
Cayman Islands
● Mileage Plus Intellectual Property Assets Aggregator, Ltd.******
Cayman Islands
● Mileage Plus Intellectual Property Assets Holdings UIP, Ltd.
Cayman Islands
● Mileage Plus Intellectual Property Assets Holdings MIP, Ltd.
Cayman Islands
● Mileage Plus Intellectual Property Assets SPV Partner, Ltd.****
Cayman Islands
● Mileage Plus Intellectual Property Assets GP S.à r.l.*****
Luxembourg
● Mileage Plus Intellectual Property Assets Lux 1 SCS*****
Luxembourg
● Mileage Plus Intellectual Property Assets Lux 2 SCS*****
Luxembourg
● Presidents Club of Guam, Inc.
Delaware
● UABSPL Holdings, Inc.
Delaware
● UAL Benefits Management, Inc.**
Delaware
● United Aviation Fuels Corporation
Delaware
● United Airlines Ventures, Ltd.
Cayman Islands
● United Airlines Ventures Management LLC
Delaware
● United Airlines Business Services Private Limited**
India
● United Ground Express, Inc.
Delaware
● United Travel Services, LLC
Delaware
● United Vacations, Inc.
Delaware
● Westwind School of Aeronautics, Phoenix, LLC
Delaware
        
*Subsidiaries of United Airlines Holdings, Inc. are wholly owned unless otherwise indicated

**Domicile Management Services Inc. is 99.9% owned by Air Wis Services, Inc. and 0.1% owned by United Airlines, Inc. CAL Cargo, S.A. de C.V. is 99.99% owned by United Airlines, Inc. and .01% owned by CALFINCO Inc. Continental Airlines de Mexico, S.A. is 99.9997% owned by United Airlines, Inc. and .0003% owned by private entities. UAL Benefits Management, Inc. has 100% of its Class A Common Stock owned by United Airlines, Inc. and 100% of its Class B Common Stock owned by Health Care Services Corporation. United Airlines Business Services


Private Limited is 99.99% owned by United Airlines, Inc. and 0.01% owned by UABSPL Holdings, Inc. on behalf of United Airlines, Inc.
*** 1 special share in Mileage Plus Intellectual Property Assets, Ltd. is held by a third party share trustee
**** Mileage Plus Intellectual Property Assets SPV Partner, Ltd. is a wholly owned subsidiary of Mileage Plus Intellectual Property Assets, Ltd.
***** Mileage Plus Intellectual Property Assets Lux 1 SCS is 4.76% owned by Mileage Plus Intellectual Property Assets GP S.à r.l. and 95.23% owned by Mileage Plus Intellectual Property Assets Lux 2 SCS, which itself is 4.76% owned by Mileage Plus Intellectual Property Assets GP S.à r.l. and 95.23% owned by Mileage Plus Intellectual Property Assets, Ltd.
****** Mileage Plus Intellectual Property Assets Aggregator, Ltd. is 60% owned by Mileage Plus Intellectual Property Assets Holdings MIP, Ltd. and 40% owned by Mileage Plus Intellectual Property Assets Holdings UIP, Ltd.