Short answer: NDC (New Distribution Capability) is an IATA data standard that lets airlines send ready-made offers, with prices, ancillaries and rich content, directly to travel sellers over XML APIs, instead of having third parties reconstruct prices from filed fares over the older EDIFACT messaging. The airline becomes the single source of the offer, and the booking becomes an "order" managed by the airline rather than only a PNR in a GDS.
What NDC actually is
NDC is a set of XML message standards published by IATA, the airline trade body, under its "Distribution with Offers and Orders" programme. It defines how a seller asks an airline for shoppable offers, how the airline responds with priced offers including ancillaries, and how a chosen offer becomes an order that the airline manages. IATA describes it as the technical foundation for "modern airline retailing". It is a standard, not a product: each airline implements its own NDC API (or uses a technology partner), and versions of the schema evolve over time.
Two clarifications save a lot of confusion. NDC is not a booking system you sign up for, and it is not one API: content, quality and completeness vary airline by airline. According to IATA, a majority of member airlines have adopted NDC to some degree, but the depth of each implementation differs widely.
The EDIFACT world it replaces
In traditional distribution, airlines file fares and rules with ATPCO, publish schedules and availability, and GDSs assemble the price a traveller sees. The airline does not fully control the final offer; the GDS computes it from filed data. Bookings live as PNRs in the GDS and airline systems, tickets are separate accounting documents, and everything travels over EDIFACT, a pre-internet messaging standard. This model is robust and deeply embedded (agency back offices, consolidators and corporate booking tools all speak it), but it struggles with the things modern retail expects: rich media, personalised bundles, dynamic prices and easy ancillary sales.
Offers and orders, explained simply
The mental model shift is from "fares assembled by intermediaries" to "offers created by the airline".
| Concept | EDIFACT world | NDC / offers-and-orders world |
|---|---|---|
| Who prices the trip | GDS computes price from filed fares and rules | Airline's own offer engine returns a complete priced offer |
| Ancillaries | Limited, sold via separate EMD documents | Bags, seats, meals and bundles inside the same offer |
| Pricing style | Filed fare classes (26 booking classes) | Can be continuous: prices at any point, not fixed class steps |
| Record of sale | PNR plus e-ticket plus EMD | One order managed by the airline (legacy records generated behind the scenes during transition) |
| Content | Text and codes | Rich content: cabin photos, seat maps, product descriptions |
"Continuous pricing" deserves a note because it is often the airline's real motive: instead of jumping between filed fare classes, the airline can price anywhere in between, which classic fare filing cannot express. And the "order" concept matters long term: IATA's stated end state is that offers and orders replace PNRs, e-tickets and EMDs entirely, though IATA's own annual review material indicates that even leading airlines are early in that transition and full "offer and order" retailing is unlikely to be mainstream before around 2030.
Why airlines push NDC
Airlines want to control their retail experience and their distribution costs. NDC lets them differentiate offers by channel and customer, sell ancillaries everywhere (not just on their own website), test prices continuously, and reduce dependence on GDS fees. Several large carriers steer volume by making certain fares NDC-only or adding surcharges to EDIFACT bookings, which is why agencies feel pushed rather than invited. None of this is hidden: it is the commercial logic IATA's retailing programme describes openly.
What changes in practice for an agency
- Cheaper fares on some carriers: NDC-only fares or EDIFACT surcharges mean the best price on certain airlines is only visible through NDC channels
- More ancillary revenue: paid seats and bags become sellable inside the same flow instead of a phone call to the airline
- Servicing is the hard part: changes, refunds and disruption handling on NDC bookings vary by airline and channel, and can be weaker than mature GDS workflows
- Back-office friction: mid-office and accounting tools built around PNRs and BSP tickets may need updates to handle orders
- Multi-source becomes normal: most agencies end up combining NDC, EDIFACT and low-cost carrier content in one screen or API
How sellers get NDC content
Almost nobody builds one integration per airline. The realistic channels are:
Direct airline APIs suit high volume on one carrier; aggregators give many NDC airlines behind one API; and the GDSs now blend NDC offers into their normal responses. Which mix is right depends on your carriers and servicing needs; we compare the options in our flight booking API comparison and build all three patterns as part of NDC API integration projects, usually alongside conventional GDS or flight API connections.
NDC in India
India moved earlier than many markets expected. Air India announced in September 2024 that it had implemented NDC on IATA's 21.3 schema, the first Indian carrier to do so, with NDC-exclusive offers and ancillaries available to agents directly and through aggregators. IndiGo, India's largest airline by domestic share, exposes NDC APIs through its own developer portal for approved partners. For Indian agencies this means the two biggest home carriers both offer API channels beyond the GDS, and portals built for the Indian market increasingly need NDC and direct-API connectivity alongside consolidator fares to stay price-competitive.
Sources: IATA, "Distribution with Offers and Orders (NDC)" programme pages and fact sheet; Air India press release on its NDC implementation (September 2024); IndiGo developer portal; AltexSoft on airline retailing transition timelines. Check the current documents, as adoption figures and schema versions change.
This article is general information about travel technology and online marketing. It is not legal, tax or financial advice, and advertising platform policies change often. Check the current policy documents and take professional advice for your own situation.