Every time a traveler books a flight, checks in at the airport, or receives a boarding pass, a Passenger Service System (PSS) is working behind the scenes. This suite of mission-critical software orchestrates everything from seat inventory to departure control, making it the operational backbone of airlines. In this article, be bolder will discuss the role of PSS in low-cost carriers (LCCs) and how to make the most of it to increase revenue, while improving customer experience and airline positioning.
The stakes are enormous. According to SITA’s Air Transport IT Insights report, airlines invested an estimated $37 billion in technology in 2024, and 72% of IT executives expect even higher spending in the coming years. At the center of that investment sits the PSS, a platform that can either accelerate or constrain an airline’s ability to compete in a rapidly evolving market. Understanding what a PSS does and where it is headed is critical for informed decision-making.
What exactly is a Passenger Service System (PSS)?
A Passenger Service System (PSS) is a software platform that manages the entire lifecycle of a passenger’s interaction with an airline. At its core, it combines three essential modules: a central reservation system (CRS) that handles bookings, fares, and passenger records; an inventory control system (ICS) that governs seat availability across fare classes; and a departure control system (DCS) that manages check-in, boarding, and baggage processing. Together, these components form the technological heart of airline operations.
Beyond these three pillars, modern PSS platforms often incorporate revenue management tools, e-commerce engines, loyalty program modules, and analytics dashboards. Since the PSS market is concentrated among a few dominant providers, choosing a platform carries long-term strategic consequences for any airline, as switching providers is costly, complex, and time-consuming. Finding customization, cost-effective, and rapidly deployable options that truly fit the airline’s needs must therefore be a top priority.
Why the PSS is a strategic asset for airlines
The PSS is much more than an operational tool; it is an invaluable strategic resource for an airline. It directly influences an airline’s capacity to generate revenue, personalize offers, and respond to market disruptions in real time. Airlines that run outdated or rigid systems face enormous disadvantages: slower time-to-market for new products, limited ancillary revenue capabilities, and fragmented customer data that prevents effective personalization.
Let’s consider ancillary revenue as an example: According to industry analyses, in 2024, the global airline industry generated over $118 billion from ancillary services. Carriers that maximize this stream rely on PSS platforms capable of dynamic bundling, real-time upselling, and seamless integration across all sales channels. Therefore, without a modern API-driven PSS, airlines cannot realistically compete in airline retailing, regardless of how strong their brand or route network may be.
According to Sabre, the LCC segment has grown twice as fast as full-service carriers over the past five years, now representing nearly 30% of global passengers boarded annually. The financial pressure is even greater for LCCs, as they rely on direct-to-consumer sales, unbundled fare structures, and intensive monetization of ancillary services. Therefore, their PSS must support ticketless operations, lightweight deployment, rapid scalability, and cloud-native architecture.
The shift toward offers and orders: what comes after
IATA’s Modern Airline Retailing program is driving the most significant architectural shift the industry has seen in decades. The vision is clear: replace the legacy PSS framework, built on decades-old artifacts like PNRs, e-tickets, and EMDs, with a modular Offer and Order management architecture. This new model treats every airline product as a retail offer that can be dynamically created, priced, and distributed through any channel.
The New Distribution Capability (NDC) standard and ONE Order initiative are the technical foundations of this transformation. NDC enables airlines to distribute richer, more personalized content beyond the limitations of traditional GDS messaging. ONE Order consolidates fragmented booking records into a single, unified order reference. According to IATA, this transition promises greater operational efficiency, customer-centric retailing, and simplified IT environments for airlines willing to invest in modernization.
Industry analysts project that most airlines will transition to Offers and Orders capabilities between 2028 and 2029, with full mainstream adoption unlikely before 2030. During this multi-year transition, the PSS will not simply vanish. Instead, it will evolve, coexisting with new order management layers and gradually ceding commercial functions to modular retailing platforms. For travel companies evaluating their technology roadmap, the critical question is not whether to modernize, but how fast and with which partners.
Radixx: a PSS built for the new generation of airlines
Within this context of transformation, Radixx stands out as a PSS platform purpose-built for low-cost, hybrid, and retail-focused carriers. Founded in 1993 and acquired by Sabre in 2019, Radixx was designed from the ground up to leverage cloud-based architecture and rapid deployment cycles. Furthermore, its microservices-based design enables airlines to choose modular capabilities that match their specific business model, without the overhead of monolithic legacy systems.
However, what truly distinguishes Radixx is not only its native functionality but also its open architecture. Through ConnectPoint, its web-services API with a full SDK, Radixx enables external systems to connect directly to the PSS for reservations, payments, inventory, and passenger management. This means custom software development companies can build tailored solutions that extend the platform’s capabilities far beyond its out-of-the-box features.
For low-cost carriers, this openness is a strategic advantage. Instead of relying solely on what the PSS vendor offers natively, airlines can partner with specialized developers to create differentiated digital experiences, custom payment flows, advanced retailing tools, or operational integrations tailored to their specific market. This flexibility allows carriers to respond faster to passenger expectations and competitive pressure, delivering additional configurations that would be impossible within a rigid, closed system.
Your PSS is only as powerful as what you build around it
The PSS an airline selects defines its operational core, but competitive advantage now depends on what carriers build around that core. Airlines that combine an open platform with tailored integrations, custom digital experiences, and data-driven intelligence will outperform those that rely solely on native features.
As a travel tech consultancy specializing in airlines and travel companies, be bolder co-creates tailored solutions that extend the capabilities of your PSS across your airline’s value chain, including third-party integrations. Our team combines deep Radixx expertise with hands-on airline knowledge to help carriers operate with confidence and grow with agility.
If you are looking to unlock the full technological potential of your PSS to meet your airline’s strategic needs, reach out to our team to explore all we can build together.
Commercial Team
[email protected]
* Image by Brett Sayles on pexels.com
