Airline distribution is evolving towards richer offers, broader product choice and more connected retailing experiences. New Distribution Capability, commonly known as NDC, is an important part of this transition.
Connecting to one airline’s NDC API may be manageable. Connecting multiple airlines—and maintaining reliable workflows across them—is considerably more complex. Airlines can use different schema versions, authentication methods, business rules and servicing processes.
NDC aggregation helps travel sellers manage these differences through a consolidated technology layer.
What is NDC?
NDC is a data-exchange standard developed by the International Air Transport Association to improve communication between airlines and travel sellers.
It enables airlines to distribute offers containing more detailed product information. Depending on the airline, this may include branded fares, baggage allowances, seats, ancillary services and promotional offers.
The standard supports interactions across the retailing lifecycle, including:
- Shopping and offer distribution
- Offer pricing
- Order creation
- Payment and fulfilment
- Seats and ancillary services
- Order retrieval and servicing
- Cancellations and refunds
NDC provides a common industry framework, but it does not make every airline connection identical. Each airline determines which version, functions, markets and commercial arrangements it supports.
Why is NDC aggregation needed?
NDC aggregation brings connections from multiple airlines into a more consistent integration environment.
Without an aggregator, a travel business may need to build, certify and maintain a separate connection for every airline. Each connection can have its own credentials, test scenarios, message structures, error responses and production requirements.
These integrations also require continuing maintenance. Airline APIs evolve, schema versions change and new functions are introduced. A connection that works today must still be monitored and updated after launch.
An aggregator manages much of this underlying complexity. The travel seller integrates with a common API while the aggregator maintains the individual airline connections behind it.
This can reduce implementation effort, accelerate access to relevant airline content and make future expansion more manageable.
What does an NDC aggregator do?
A capable NDC aggregator performs more than message routing. Its responsibilities may include:
- Establishing and maintaining airline connections
- Supporting different NDC schema versions
- Normalizing requests and responses
- Coordinating shopping, pricing and booking workflows
- Supporting applicable payment and fulfilment processes
- Managing post-booking servicing functions
- Monitoring connection availability and performance
- Handling errors, timeouts and exceptions
- Supporting airline testing and certification
- Updating integrations when airline APIs change
The value of an aggregator should therefore be assessed by the quality and depth of its connections—not only the number of airlines displayed in its portfolio.
Why content normalization matters
Airlines may describe fares, baggage, seats, services, penalties and order statuses differently.
Without normalization, a travel seller may need carrier-specific logic throughout its booking application. That can make the platform harder to maintain and complicate the addition of new airline connections.
Normalization translates information from different sources into a more consistent structure. It can simplify searching, offer comparison, booking and integration with downstream systems.
However, consistency should not remove the characteristics that differentiate an airline’s offer. Branded fare attributes, baggage conditions and carrier-specific services should remain visible where supported.
Effective aggregation balances a common data model with the preservation of relevant airline information.
Coverage must include servicing
Shopping and booking are only part of the customer journey.
After a booking is created, customers may need to retrieve an order, select a seat, add baggage, modify an itinerary, cancel a journey or request a refund. If these workflows are unavailable through the integration, the travel seller may have to rely on manual processes.
This can increase operating costs, extend response times and produce an inconsistent customer experience.
When reviewing an airline connection, travel sellers should examine its capability across:
- Shopping and pricing
- Order creation
- Payment and fulfilment
- Seats and ancillary services
- Order retrieval
- Voluntary changes
- Cancellations and refunds
- Exception handling
Available functions may vary by airline, market and seller entitlement. An aggregator should make those differences clear during evaluation and onboarding.
NDC within a broader content strategy
Many travel sellers require more than NDC content. Their target markets may also include low-cost carriers and other airline-content sources.
Managing every source independently can create fragmented search, booking and servicing processes. A unified airline-content strategy provides a consistent integration foundation while allowing individual airlines and channels to retain their applicable commercial and functional characteristics.
The objective is not to make every source appear identical. It is to make multiple sources easier to integrate, compare and operate.
For OTAs and travel-technology platforms, this can reduce separate development work while allowing them to retain control of their customer interface and commercial model.
How to evaluate an aggregation partner
Airline count is useful, but it should not be the sole selection criterion. Travel sellers should examine the following areas.
Relevant airline coverage
Confirm that the aggregator supports the airlines, markets and points of sale required by the business. Distinguish between live connections and those still undergoing implementation or certification.
Functional depth
Review the supported workflows for each airline. A connection offering shopping and booking may not provide comprehensive servicing.
API quality
Assess the structure of the API, authentication process, documentation, test environment, error responses and version-management approach.
Content presentation
Determine how branded fares, baggage, seats, ancillary services and airline-specific attributes are represented.
Operational reliability
Understand how the platform monitors connections and manages airline outages, timeouts, invalid responses and other exceptions.
Onboarding responsibilities
Clarify the roles of the airline, aggregator and seller in relation to commercial agreements, credentials, certification, testing and production activation.
Support and change management
Establish how incidents, airline API changes and newly available capabilities will be communicated and supported.
Scalability
Consider whether the platform can support increased search volumes, additional airlines, new markets and future servicing requirements.
How AIRX supports airline aggregation
Pratra AIRX is a unified airline API designed for OTAs, travel-technology platforms and businesses that operate their own booking experience.
AIRX brings supported NDC and low-cost-carrier content into a connected integration environment. It is designed to provide consistent shopping, pricing, booking, fulfilment and servicing workflows while managing the technical differences between individual sources.
Product and engineering teams can retain control of their customer experience while using AIRX as the airline-connectivity layer behind it.
Airline availability and individual capabilities remain dependent on the relevant connection, market and seller entitlement.
Frequently asked questions
Does NDC aggregation make every airline connection identical?
No. Airlines retain their own products, business rules and supported functions. Aggregation makes the integrations more consistent while preserving relevant airline differences.
Does an aggregator remove the need for airline approval?
Not always. An airline may require a commercial agreement, seller approval, credentials or certification before access is activated.
Is a larger airline portfolio automatically better?
Not necessarily. Relevant coverage, functional depth, servicing capability and operational reliability are more important than the headline number alone.
Can NDC and low-cost-carrier content use one API?
A unified aggregation platform can provide a common integration layer for supported NDC and low-cost-carrier sources. The functions available will still vary by airline.
Building a scalable airline-content foundation
NDC aggregation can reduce integration complexity and provide travel sellers with a more scalable foundation for modern airline retailing.
The right aggregation strategy should consider airline relevance, functional depth, API quality, servicing and operational support. The objective is not simply to connect more airlines—it is to build a dependable environment that supports customers from the first search through booking, fulfilment and post-booking service.
