See 7 Supersonic Passenger Planes That Will Connect Cities in One Hour

Supersonic commercial air travel started with Concorde in 1976, but there hasn't been another ultra-high-speed plane since the jet's demise in 2003.

United will buy 15 ultrafast airplanes from start-up Boom Supersonic

United Airlines wants planes from Boom Supersonic to fly passengers faster than the speed of sound

Boom Supersonic unveils design for world's fastest passenger airliner

Echoing the Concorde, American is buying supersonic planes from aviation startup Boom - Vox

Is a Mach 4 Passenger Jet Possible? NASA, Industry Explore Idea - NASA

Boom X1-B: Delhi to New York in 6 hrs? This jet can make it happen - Can you believe it?

See 7 Supersonic Passenger Planes That Will Connect Cities in One Hour

Boom and the Disappointment of Supersonic Travel's Return

The past, present, and future of supersonic air travel

Supersonic passenger jets are making a comeback - The Washington Post

Iain Boyd: Commercial supersonic aircraft could return to the skies