Travel New York to London in 3 ½ hours? United says it’ll be possible with new supersonic jet June 3, 2021Dawn Gilbertson, USA TODAYComments Off on New York to London in 3 ½ hours? United says it’ll be possible with new supersonic jet United signed a deal with startup Boom Supersonic for 15 supersonic aircraft. Don't get excited yet: The planes won't carry passengers until 2029.