Lawmakers push to legalize emissions-heavy ‘supersonic’ planes

By Corbin Hiar | 05/15/2025 06:40 AM EDT

A bill to repeal the ban on overland supersonic flights could increase the demand for the gas-guzzling jets from around a dozen to as many as 240.

A retired British Airways Concorde supersonic airliner is lifted by a crane as it is returned to the Intrepid Museum.

The Concorde, seen above as it is returned to the Intrepid Museum last year, was last in commercial operation in 2003. Lawmakers want to help bring back supersonic flights by legalizing it in U.S. airspace, as United Airlines and others invest in the planemaking startup Boom Supersonic. Michael M. Santiago/AFP via Getty Images

Lawmakers on both sides of the Capitol are seeking to repeal a half-century-old regulation that prevents civilian aircraft from traveling faster than the speed of sound over the United States.

The “Supersonic Aviation Modernization Act” could vastly increase the potential market — and emissions — of Boom Supersonic, a planemaking startup backed by United Airlines; Japan Airlines; and Sam Altman, the billionaire CEO of the artificial intelligence firm OpenAI.

No commercial supersonic planes have been in operation since the Concorde ceased flights between New York and London in 2003. But aviation analysts estimate that the jets Boom is developing would consume at least two times more fuel per passenger than flying on commercial airplanes in operation now.

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The bill is from Sen. Ted Budd (R-N.C.), whose state is home to Boom’s manufacturing plant, and Rep. Troy Nehls (R-Texas), the chair of the Transportation and Infrastructure Subcommittee on Aviation. It’s co-sponsored by Republican Sens. Thom Tillis of North Carolina, Mike Lee of Utah and Tim Sheehy of Montana as well as Democratic Rep. Sharice Davids of Kansas.

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