Located 14 miles outside Boston, Hanscom is New England’s largest private jet port. Private jets are the epitome of private excess at public and planetary expense. They pollute between 10 and 20 times more per passenger than commercial flights. 

Yet private developers are pressing to triple Hanscom’s capacity to serve wealthy private jet travelers. So after a summer of unprecedented heat waves, wildfires, floods, and droughts, climate activists are demanding a halt to private jet expansion at Hanscom–and everywhere else. 

A new study I co-authored, Hanscom High Flyers, found 31,599 flights by 2,915 unique private jets in or out of Hansom over an 18-month period. Together these flights emitted 106,676 tons of carbon. (For comparison, the average Massachusetts resident has a carbon footprint of about 8 tons all year. For the average American, it’s about 14.)

Private jet owners and users are among the wealthiest people in our society. According to Wealth-X, the median wealth of a U.S. private jet owner is $190 million, with fractional share owners worth about $140 million.  

Despite their ample means, these high flyers don’t pay the full ecological and economic costs of their luxury transit choice. In addition to its disproportionate climate impact, private aviation uses 16% of the country’s airspace–but only contributes 2% of the fees to manage the flight control system.

There’s a reason Warren Buffett once nicknamed his private jet “the Indefensible.”

Defenders of private jet excess argue they’re necessary for senior management mobility and the health of our economy. But we estimate that at least half of Hanscom flights (49%) went to luxury destinations or were for recreational purposes. 

The number one frequent Hanscom flyer was a jet registered to a managing partner at the private equity firm Charlesbank, a major investor in fossil fuel infrastructure projects. Their number one destination was Nantucket, with 112 flights. Traveling from Boston to Nantucket is a two-hour drive and a one-hour high-speed ferry. 

Aircraft linked to Charlesbank executives also made 100 trips to two private jet ports outside New York, a destination with dozens of other transit options–many of them quite luxurious, including First Class trips on the Acela fast train. Other frequent destinations included West Palm Beach, Florida; Aspen, Colorado; Jackson Hole, Wyoming; and international destinations such as Aruba and the Virgin Islands.

While plenty of business is no doubt discussed over golf at Aberdeen, Scotland or at bird hunting reserves in Argentina (destinations we also documented), this is probably the least defensible form of luxury travel on a warming planet when a Zoom call would often do. 

Charlesbank representatives say that the aircraft are operated as part of charter pools and that the majority of their usage is attributed to unaffiliated third parties, while all non-charter pool usage by the planes’ owners is paid for solely by the owners, not by Charlesbank, and most of that usage is for personal travel, not business. However, it is not unusual for private jet owners to lease their planes to others.

Our analysis only reveals the tip of the private jet excess iceberg. Thanks to industry lobbying, private jet owners can have their flight data removed from public flight-tracking registries. 

We found that several Massachusetts billionaires who own private jets–including Red Sox and Boston Globe owner John Henry, Patriots owner Bob Kraft, New Balance owner Jim Davis, and former Reebok CEO Paul Fireman–had blocked the public from seeing their private flight records. And the private jet lobby wants to make it even harder for the public to get this information.

The private jet lobby argues that private aviation creates jobs and insists that they’re investing in sustainable aviation fuels. But typewriter manufacturing also created a lot of jobs at one time–and replacing jet fuel with alternatives is still decades away–if it ever happens. We would be better off investing in high-speed rail and other transit alternatives, which would create good jobs, serve more people, and reduce pollution.

The Hanscom fight has national and even global significance. European governments are cracking down on short-hop flights and exploring bans on private jet expansion. 

In the United States, the politically powerful private jet lobby is used to getting its way with state governments. However, in Massachusetts, Governor Maura Healy has been a leader in facing the realities of climate change. Even Massport, the typically private jet-friendly public agency that operates Hanscom Field, Boston Logan Airport, and other facilities, is implementing plans to move to net zero emissions in their buildings and infrastructure by 2031.

In a compact Northeast corridor with many other transportation options, local officials may well get the message on private jets–and that could set the stage for successful fights elsewhere.

If activists succeed in stopping the Hanscom expansion, it will be the next “shot heard round the world” on a warming planet. 

Correction: A previous version of this article claimed the aircraft in question are owned by Charlesbank. This is incorrect–the aircraft are owned by senior Charlesbank executives. Charlesbank had not answered the author’s questions about the specific use made of the aircraft, but representatives of the company responded to the article post-publication. Their response has been added.

Chuck Collins directs the program on inequality at the Institute for Policy Studies and co-edits its Inequality.org website. He’s a co-author of the new IPS report Hansom High Flyers: Private Jet Excess Doesn’t Justify Airport Expansion.

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