Airlines are flying on margins that nobody would have accepted ten years ago. Fuel is expensive, passengers are demanding, and fleets are aging faster than the budgets meant to replace them. And here's the odd part: the technology that's supposed to make all this easier often just adds more work. Ten systems that don't talk to each other. Maintenance logs that someone is still copying into a spreadsheet by hand. Sound familiar?
This article covers five companies actually solving these problems for airlines, airports, lessors, and MRO providers. Not the loudest brands out there, but the ones that have spent years in aviation specifically and have something to show for it beyond a polished slide deck.
DXC Technology
Let's start with a company that's hard to leave out of any conversation about airline retailing infrastructure. DXC has worked with airlines for decades on a level passengers never see but absolutely feel the moment something breaks: check-in, boarding, booking processing.
Lufthansa picked DXC as its Open API partner specifically because the company already knew its IT infrastructure inside out and brought deep technical experience in airline-industry solutions. United Airlines went even further, modernizing its mission-critical mainframe infrastructure with DXC and launching passenger-facing mobile apps that keep half a million travelers connected and on time every day. A senior advisor at American Airlines once put it bluntly: the company basically wouldn't be flying without DXC. Sounds like an exaggeration, but for infrastructure at that scale, it's almost literal.
Then there's the Accelya partnership. DXC contributed its Departure Control Systems technology to the FLX ONE platform, which processes more than 30 billion airfare offers globally every single day. Translation: when you check in for a flight or change your seat through an app, there's a decent chance this is the infrastructure quietly running underneath.
Where DXC's aviation work concentrates:
• Mainframe and legacy system modernization without disrupting operations
• Departure Control Systems for passenger check-in and boarding
• NDC-compliant solutions and integration with ticket distribution platforms
• Airport IT as a managed service, covering everything from network monitoring to cybersecurity
• Digital twins for transport infrastructure planning and route optimization
DXC ties civil aviation work together with secure defense IT solution capabilities under one delivery model, which matters for carriers that also work with government clients or sit under dual regulatory frameworks.
Sopra Steria
A French company holding, quite literally, a piece of Europe's airspace future in its hands. Sopra Steria is one of those rare cases where a single division, Aeroline, fields more aviation experts than some specialized competitors have employees in total: over 5,500 of them across ten countries.
Their most visible project right now is a partnership with Thales to launch OpenSky, a platform aimed at modernizing air traffic management across Europe. It supports air navigation service providers as they shift to a new operating model aligned with the latest European ATM Master Plan. This isn't a pilot sitting on paper somewhere, it's real infrastructure being rolled out across the continent right now.
Worth mentioning separately: a multi-year contract with Airbus to modernize engineering methods and roll out a new flight management system across production operations in France, Spain, Germany, Poland, India, the US, and Canada. There's also a smaller, less flashy story: an RPA project with Norway's Avinor, where robotic process automation took repetitive workload off airport staff's plates. Not every aviation IT story is about satellites and cloud platforms. Sometimes it's just about not making someone stare at the same task for eight hours straight.
What makes them stand out:
• Air traffic management, their flagship strength, backed by the Thales partnership
• Engineering modernization for manufacturers, Airbus included
• Aeroline Zero Emission, their decarbonization program for aviation
• Back-office automation through RPA for airport operators
If your operation sits inside European regulatory structures, GDPR, sovereign cloud requirements, EU procurement rules, Sopra Steria knows that terrain better than most US-based providers ever will.
IFS
A Swedish company that's pretty much cornered the conversation around MRO software for commercial airlines. That's not marketing talk either: according to ARC Advisory Group, IFS's solution ranks as the number one MRO software choice among the world's largest carriers.
The client list speaks for itself: Qantas, LATAM, Emirates, Air France-KLM, Southwest Airlines, China Airlines. The China Airlines case is a particularly good illustration. After digitizing MRO processes with IFS, the airline saw a 10% boost in line maintenance efficiency, 3% faster A-Check turnaround, and cut scheduled maintenance downtime by 30 days. Thirty days of an aircraft sitting idle isn't a small thing, that's real money that used to just evaporate.
The flagship product is IFS Maintenix, originally built as a standalone MRO platform more than two decades ago and now folded into the broader IFS Cloud ecosystem. Southwest Airlines ran what it describes as the largest single conversion to a modern MRO IT system in commercial aviation history on this platform.
What separates IFS from a typical ERP vendor:
• IFS Maintenix Fleet Planner for long-term maintenance scheduling
• IFS Maintenix Line Planner for short-term line maintenance planning
• Built-in compliance with FAA and EASA standards, baked into the workflow rather than bolted on afterward
• Support for multiple fleets at once, with full configuration control across "as designed" and "as maintained" baselines
Most ERP vendors try to squeeze aviation into a generic industrial template. IFS did the opposite, it built the system around how airlines and MRO providers actually operate, then layered finance, inventory, and HR on top.
ST Engineering
A Singaporean group founded back in 1967, and today the world's largest independent airframe MRO provider by man-hours, according to Aviation Week. If you fly commercial, there's a fair chance an aircraft you've boarded has passed through their hands at some point: more than 17,000 aircraft serviced over the company's history.
ST Engineering is a Premier MRO partner for CFM LEAP engines, the kind now sitting on thousands of new Airbus and Boeing aircraft. The company is expanding engine maintenance capacity in Singapore and Xiamen, aiming to service over 300 engines a year at just one of those sites by 2027. Through a joint venture with Airbus called Elbe Flugzeugwerke, ST Engineering also remains the sole provider of passenger-to-freighter conversions for the A320, A321, and A330 family.
A few numbers worth picturing concretely: more than 23,500 unique aircraft part types covered in its maintenance portfolio, authorized service center status with over 20 equipment manufacturers, and round-the-clock Aircraft-on-Ground response across Singapore, Vietnam, Sweden, China, and the US.
Where the company stands out in civil aviation:
• Airframe MRO at industrial scale across three continents
• CFM56 and LEAP engine servicing, including full overhauls
• Passenger-to-freighter conversions extending the life of aging fleets
• Component services with guaranteed turnaround and round-the-clock parts availability
For an airline gearing up for fleet growth or a transition to next-generation engines, ST Engineering is the kind of partner whose infrastructure already exists, rather than one you'd have to build from scratch.
Atos BDS Division
A French company that went through a well-publicized restructuring in 2024. But here's the thing: despite all the headlines about financial trouble, the aviation business kept signing contracts and delivering on them as if nothing unusual were happening.
The best example is its long-running partnership with Eurocontrol, the pan-European air traffic management organization. In 2024, Atos extended its contract and deployed the first multi-region public cloud environment for air traffic management applications, fully certified by the European Union Aviation Safety Agency. The deal was valued at roughly €165 million and runs as part of a longer-term program to modernize Eurocontrol's network systems through 2030.
Eviden, the Atos Group business handling this work, provides proactive monitoring of Eurocontrol's critical assets using its own AI-driven security tools. The partnership has run for more than ten years now. That kind of trust doesn't appear overnight, it builds up over years of uninterrupted work inside some of the most sensitive parts of the infrastructure.
Core areas of work:
• Cloud infrastructure for air traffic management, EASA-certified
• Cybersecurity for critical aviation assets through the Eviden division
• Network infrastructure and platforms for air navigation service providers
• Long-term support for modernization programs across pan-European aviation bodies
When the organization responsible for safeguarding an entire continent's airspace renews its contract for another cycle, that says more than any case study on a website ever could.
How to Choose
Aviation IT isn't a market where you can just switch vendors if something doesn't click. Implementation cycles run long, regulatory requirements don't forgive shortcuts, and switching systems mid-program costs a lot more than it looks like on paper.
A few things actually worth checking:
Depth in the industry beats breadth. A company serving ten different sectors at once rarely catches up to one that's spent a decade building aviation-specific compliance workflows.
Reference projects matter more than sales decks. Ask which fleets, which airlines, which platforms, and whether you can actually talk to a real client rather than just read a quote on a page.
Regulatory fit depends on geography. FAA, EASA, EU sovereign cloud requirements, the right provider gets chosen around your regulatory footprint, not the other way around.
And finally, integration. A modern airline runs dozens of systems at once: ticketing, maintenance, fuel, crew scheduling. A vendor that can't talk to those other systems will eventually become your biggest technical headache, not your solution.
All five companies here have made aviation a genuine specialty, not a single bullet point on a capabilities slide. And that difference tends to show up the moment a real problem needs solving, not when you're reading about it in a brochure.
