Airlines are adept at tracking the costs passengers can see: fuel, crew, airport fees, fleet use, maintenance, sales channels and demand. Yet Skymetrix says a far less visible drain is still sitting inside finance departments, where invoices continue to arrive in formats designed for people rather than systems.
The aviation cost-management specialist said it examined 1.12 million fuel and airport charge invoices across 31 airlines during 2024 and 2025. Its findings were strikin...
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g: 40.3% of those bills still came through as unstructured documents, including paper, scanned PDFs and PDFs attached to emails. That means a person often has to read the invoice, re-enter the data and trust that nothing is lost in translation.
Skymetrix argues that this creates a hidden burden it calls an “invisible surcharge” of $4.6 billion in undetected errors paid by airlines each year. The figure stands out because IATA has estimated global airline net profit at $36 billion for 2025, with a margin of just 3.7%. In an industry with such thin returns, even small billing mistakes can add up quickly.
The problem is not just the format of the invoice. It is what happens afterwards.
Manual re-keying opens the door to mistakes, and detailed checking remains limited. Skymetrix says airline teams typically scrutinise only 10% to 20% of invoices in depth, leaving much of the flow to pass through with little challenge. That is understandable in one sense: fuel and airport charge invoices are complicated, with changing rates, taxes, currencies, contractual terms and operational variables. But it also creates the conditions for leakage.
A missed discount, a duplicated fee, an incorrect rate or a small mismatch in volume may not stand out on its own. Across thousands of invoices and dozens of airports, though, the losses become material.
The company also suggests the sector is split between operators that have modernised and those that have not. Some airlines now report paper invoice rates below 10%, while others still rely on paper or PDF formats for more than half of their invoices. That gap suggests the issue is less an unavoidable feature of aviation than a sign of uneven digital maturity.
Skymetrix has responded with an AI Invoice Automation product that it says can capture, verify and process invoices automatically, including unstructured PDFs. The company says the system is meant to reduce manual work, improve payment accuracy and give airlines tighter control over direct operating costs.
The wider aviation sector is already investing heavily in digital transformation on the customer-facing side, from retailing and personalisation to new distribution models. IATA’s Modern Airline Retailing programme has become one of the best-known expressions of that shift. But the quieter back-office change may be just as important: finance automation, contract validation, reconciliation and leakage detection.
That is where the appeal of airline-specific tools becomes clearer. Generic accounts payable systems can help reduce errors, but aviation invoices are unusually complex, especially in fuel and airport charging. They are tied to operational details and industry-specific rules, which means automation has to do more than simply read text. It has to understand context.
Skymetrix says its platform, which it markets as a procure-to-pay system for airlines, is intended to cover fuel, airport, navigation, crew, catering and ground-handling costs. The company says it has more than 135 airline customers and more than 25 years’ experience in the sector. It also claims the automation tool can save airlines as much as $1.8 million a month by eliminating errors and missed discounts.
The broader message is not that artificial intelligence will magically remove paperwork. It is that airlines can no longer afford to treat the back office as a secondary concern. Passenger demand may support revenue, and better retailing may improve yields, but if billing errors are still draining value after the aircraft lands, profitability is being eroded where few travellers will ever see it.
For airlines, the next efficiency gains may come not from what customers notice, but from what they never do: cleaner invoice flows, tighter controls and faster verification. In a business where margins are narrow, that may matter as much as any new route or cabin product.
Source: Noah Wire Services
