Hydrogen Drone HydroWing Completes Trans-Pacific Flight: A New Record for Long-Endurance Zero-Carbon Aviation
US hydrogen aviation startup H2 Flight's HydroWing drone flew from Tokyo to San Francisco — 7,800km in 32 hours — setting a new distance record for hydrogen-powered aircraft. Liquid hydrogen fuel cells offer a zero-carbon solution for long-endurance aviation.
US hydrogen aviation startup H2 Flight announced on June 7, 2028 that its HydroWing hydrogen drone successfully completed a trans-Pacific flight from Tokyo Haneda Airport to San Francisco International Airport via Wake Island refueling stop. Total distance: 7,800km. Flight time: 32 hours.
HydroWing has a 12-meter wingspan and carries a liquid hydrogen fuel cell system with 50kg of liquid hydrogen fuel. Liquid hydrogen's energy density is approximately 200x that of lithium batteries, giving HydroWing endurance far exceeding same-class electric drones.
H2 Flight CEO Daniel Lee said: "The trans-Pacific flight proves hydrogen aviation is not a distant concept — it already works."
The first commercial customer is Japan Post, using HydroWing for a Tokyo-Shanghai express delivery route. Hydrogen drones can reduce trans-Pacific delivery times from three days to one while achieving zero emissions.
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