JetZero, the startup currently developing a clean-sheet blended-wing-body (BWB) airliner, secured the endorsement of two prominent international airlines at Farnborough International Airshow 2026.
On July 21, 2026, JetZero announced that Bahrain-based carrier Gulf Air had signed a Letter of Intent (LoI) to secure preferential delivery slots for its future Z4 airliner.
The timeframe for any potential Z4 deliveries and entry into service stretches all the way to the early 2030s, since this aircraft is still under development and has yet to perform its first flight, let alone complete certification.
Gulf Air’s Chief Executive Officer (CEO), who was at Farnborough to sign the agreement with JetZero co-founder and CEO, Tom O’Leary, is known in the industry for his interest in technology. During his previous tenure as head of airBaltic, he backed the early adoption of several new technologies, such as blockchain, in a number of the airline’s processes. airBaltic was also the first carrier in Europe to adopt Starlink-based inflight connectivity.
If finally confirmed, a Z4 order would support Gulf Air’s aim to regrow its network across Europe and Asia after a period of downsizing that saw the carrier focus on its core markets.
But Gulf Air’s is not the only endorsement received by JetZero during the UK air show. Japan Airlines (JAL) also signaled its interest in the future Z4 airliner by closing a partnership with the US startup.
The two companies pledged to work together in helping refine the design and specifications of the airliner as well as the requirements for ground operations and maintenance, repair and overhaul (MRO). The Japanese flag carrier is expected to contribute its decades-long expertise in these fields to help the Z4 project come to fruition.
So far, JetZero has attracted the interest of United Airlines, Delta Air Lines, and Alaska Airlines, which all supported the Z4 project with investments via their respective venture capital arms.