ASI, which builds predictive software for airline dispatchers, air-traffic controllers and military operators, raised $325 million in a Series C led by Spark Capital, Bloomberg reported Tuesday. The transaction values Boston-based ASI, formerly Air Space Intelligence, at $3 billion. Craft Ventures, Andreessen Horowitz and Citadel Securities affiliates also participated, according to the report.
The company’s aviation systems look ahead rather than simply show where aircraft have been. They simulate thousands of flight paths against live weather, traffic, congestion and turbulence, then surface route changes for dispatchers, pilots and controllers to assess. ASI says the software also weighs each trajectory against the broader network, where changing one flight can shift constraints elsewhere.
That airline workflow is broadening into national air-traffic management. ASI says the FAA awarded it a $875 million multiyear software and artificial-intelligence contract in June. Its aviation materials describe systems that forecast conflicts and disruptions across dense airspace, allowing controllers and other operators to intervene before bottlenecks turn into cascading delays.
ASI is applying the same forecasting approach to defense and energy. Its website describes defense uses including contested logistics and command decisions, while Bloomberg said the new capital will expand technology for military users, airlines and air-traffic controllers. Across those settings, the software combines current operating constraints with simulations intended to help people act before committing assets or letting a network problem spread.
The round marks a steep repricing. Andreessen Horowitz led a $34 million financing in December 2023 at an approximately $300 million valuation, Bloomberg reported at the time. The company already sold Flyways to commercial carriers including Alaska Airlines and counted the Defense Department as a customer. The new reported valuation is about 10 times that earlier mark.