Billionaire Profile
William Franke
Global Rank
#2623

Image: Public domain | via Wikimedia Commons

William Franke

CEO, Frontier Airlines
US
Real-Time Net Worth
$1.2B
As of December 2025
Age
88
Source
Low-cost airlines
Industry
diversified
Citizenship
US

Biography

William Franke, a pioneering figure in the low-cost airline industry, is an American billionaire with an estimated net worth of $1.2 billion as of mid-2025. Born in 1937, Franke's career has been marked by his innovative approach to air travel, founding Indigo Partners in 2002, a private equity firm specializing in investments in the air transportation sector. His early career included roles in the timber industry and banking before he transitioned into the airline industry. Franke's achievements include serving as the CEO of America West Airlines and leading the restructuring of several companies. He currently serves as the chairman of Frontier Airlines and Wizz Air. Franke and his wife Carolyn, have also supported multiple charities, with a focus on education and healthcare.

Wealth Over Time

In-Depth Profile

Early Life

William Augustus Franke was born in Bryan, Texas, in 1937. His early life included travels due to his father's work with the State Department, which exposed him to different cultures in Latin America. Franke's educational journey led him to Stanford University, where he earned a Bachelor of Arts in history in 1959 and a law degree in 1961. He served in the U.S. Army and later practiced law before entering the business world.

Rise to Success

Franke's career took a pivotal turn when he entered the airline industry. He became the CEO of America West Airlines from 1993 to 2001, and later he founded Indigo Partners in 2002. Indigo Partners became instrumental in developing low-cost carriers worldwide. Franke's strategic investments and leadership roles in airlines such as Spirit Airlines, Frontier Airlines, Wizz Air, Volaris, and JetSmart have significantly shaped the air travel landscape. His ability to identify opportunities and streamline operations in the airline sector has earned him recognition as a pioneer in ultra-low-cost air travel.

Key Business Strategies

Franke's business acumen lies in his focus on low-cost models, operational efficiency, and strategic investments in the aviation sector. His strategy involves acquiring stakes in budget airlines and implementing cost-reduction measures and fleet modernization. A notable move was Indigo Partners' massive order of Airbus A321 aircraft, demonstrating confidence in the recovery of air travel and signaling a commitment to growth.

Philanthropy

The Franke family is involved in philanthropy, with significant contributions to education and healthcare. They have supported Northern Arizona University, the University of Montana, the University of Arizona, Stanford University, and the Mayo Clinic. Their donations often support scholarships, faculty development, and curriculum innovation. In 2021, the Frankes donated $25 million to the University of Arizona, which led to the renaming of the Honors College to the W.A. Franke Honors College.

Career Milestones

1993

CEO of America West Airlines

Franke became CEO, leading the airline through bankruptcy and transforming it into a low-cost carrier.

2002

Founded Indigo Partners

Established a private equity firm focused on air transportation investments.

2004

Chairman of Wizz Air

Assumed the role of chairman, contributing to the airline's growth.

2006

Chairman of Spirit Airlines

Served as chairman, contributing to the airline's development.

2013

Chairman of Frontier Airlines

Began serving as chairman, playing a crucial role in the airline's strategy.

Philanthropy & Social Impact

Education

Northern Arizona University

$25M

Donation to the W.A. Franke College of Business

Education

University of Montana

$24M

The largest gift in the school's history. Supports the Franke Global Leadership Initiative

Education

Stanford University

Undisclosed

Donations to Stanford Law School

Healthcare

Mayo Clinic

Undisclosed

Supports scholarships and operations

Education

University of Arizona

$25M

Donation to the W.A. Franke Honors College

Business Philosophy & Leadership

Notable Quotes

""There is a certain push-comes-to-shove between customer service and the low-cost model that the market needs to understand.""

Leadership Principles

Focus on Low Costs

Prioritizing cost-efficiency as a key strategy for airline success

Strategic Investments

Identifying and investing in airlines with high-growth potential

Operational Improvement

Focusing on cost reduction and strategic guidance to improve the profitability of airlines