American Airlines agreed to buy 20 supersonic Overture airplanes from Boom Supersonic, paving its way to becoming the airline with the largest supersonic fleet, the companies announced on Tuesday.

“Supersonic travel will be an important part of our ability to deliver for our customers,” American Airlines financial officer Derek Kerr said in a statement.

The supersonic Overture jet is expected to fly as fast at Mach 1.7 or 1,304 mph and carry 65 to 80 passengers. Such speeds could cut trans-Atlantic and trans-Pacific flight times nearly in half

“Flying from Miami to London in just under five hours and Los Angeles to Honolulu in three hours are among the many possibilities,” Boom said in a statement