Boom Supersonic plans to announce Tuesday that Japan Airlines will join its quest to build next-generation supersonic jets for commercial routes at an affordable price. Instead of typical eight-hour red-eyes from New York to London, Boom hopes to offer three-hour, 15-minute flights for about $5,000 round trip. Related Articles Centennial-based Boom Supersonic’s new airplane and other cool, quirky things at the Paris Air Show Boom’s supersonic jet passes wind-tunnel test as tech allows for small-scale prototype Centennial’s Boom Tech gets a $33 million funding boost for its supersonic jet Colorado-based Boom Technology is bringing back supersonic.