Flying taxis have moved a step closer to becoming a fixture buzzing across the world¡¯s urban skyscapes after startups in the U.K. and Brazil made commercial breakthroughs and a closely watched effort was unveiled in Los Angeles.

Vertical Aerospace Group, based in Bristol, England, won conditional orders for as many as 1,000 electric aircraft that could total $4 billion from buyers including American Airlines Group Inc. and Virgin Atlantic Airways Ltd., it said last week.

Brazil¡¯s Embraer SA separately confirmed it¡¯s in talks to merge its unit developing electric vertical takeoff and landing aircraft, or eVTOLs, into a public company, sending the stock surging.