Understand what a Global Distribution System (GDS) does, how travel bookings work, and how to compare providers, costs and integration options. This simple guide helps travel agencies plan for NDC, ticketing and reliable after-sales support.
What is a Global Distribution System (GDS)?
A Global Distribution System (GDS) is a network that connects travel sellers with travel suppliers. It helps agencies search, compare and book services such as flights, hotels and rental cars through one connection. The suppliers own the inventory; the GDS helps distribute and sell it.
For an agency owner, think of it as a shared route to multiple suppliers. Your team can compare options and manage reservations without contacting every supplier separately. However, access depends on your agreement, market and connected content. A GDS does not automatically include every airline or the lowest fare.
Key takeaways
- Amadeus, Sabre and Travelport are major GDS providers.
- A booking reference or PNR is different from an issued airline ticket.
- API integration connects software; it does not itself grant ticketing authority.
- NDC is a data exchange standard that can also be supported through a GDS.
- Choose based on your routes, servicing needs and total cost, rather than brand name alone.
On this page: Booking workflow · Providers · GDS vs CRS, OTA and NDC · Access and costs · Selection checklist · Future of GDS · FAQs.
How does a GDS work?
A typical flight booking moves through six stages. The exact process varies by provider and airline.
- Search: An agent enters the route, dates, passenger count and cabin. The agency interface or booking website sends the request.
- Compare: Connected content returns flight options, fares and conditions. The agent checks baggage, connections and change rules alongside the price.
- Recheck: The selected offer is priced again before booking. Prices and availability can change between the first search and confirmation.
- Reserve: Passenger details are submitted and a reservation record is created. A Passenger Name Record, or PNR, holds booking information.
- Issue the ticket: The authorized ticketing party completes issuance under the agreed payment and settlement arrangement.
- Service the booking: Changes, cancellations, refunds and schedule updates are handled through supported tools or the agreed support team.
Important: A PNR alone does not prove that a flight ticket has been issued. Check the ticket number, booking status and ticketing deadline before telling a customer that their journey is ready.
Hotel and car bookings have different confirmation and payment processes. Do not apply airline ticketing rules to every travel product.
Example: an Indian agency booking a business trip
Imagine a Delhi agency helping a customer travel to London. This is an illustrative example, not a real SRDV client case.
The agent compares a direct flight with a connecting flight. The cheapest option has a restrictive change policy, so the customer selects a more flexible fare. Before booking, the agent rechecks the fare and baggage allowance.
The reservation creates a PNR. The agency or its ticketing partner then issues the ticket within the applicable deadline. If the airline changes the schedule later, the team checks the available options and informs the traveler. This example shows why after-sales support matters as much as search speed.
What are the main GDS providers?
Start your research with these three providers. Product access and capabilities should be confirmed for your specific business.
| Provider | Overview | Questions to ask |
|---|---|---|
| Amadeus | Offers travel distribution, agency tools and APIs. | Which API product, content and ticketing arrangement fit our business? |
| Sabre | Connects suppliers and agencies through its travel marketplace and technology. | Which shopping, booking and servicing functions are available to us? |
| Travelport | Operates Galileo, Apollo and Worldspan; Travelport+ is built on the Galileo core. | Which platform and airline capabilities apply in our market? |
Galileo, Apollo and Worldspan should not be presented as three unrelated companies competing with Travelport. They belong to Travelport. Also, no provider is automatically the best choice for every agency.
Explore SRDV's Amadeus API integration, Sabre API integration and Galileo API integration services for the technology side of implementation.
Who benefits from a GDS?
- Travel agencies: Compare connected suppliers and organize bookings through a common workflow.
- Online travel agencies: Connect supplier content to their own customer-facing booking experience using suitable APIs.
- Corporate travel teams: Combine supplier access with booking tools, negotiated content and company travel policies where supported.
- Hotels and other suppliers: Make their products available to agency distribution channels, including business travel sellers.
These benefits depend on the complete setup. A GDS connection alone does not create your website, payment flow, customer service process or corporate approval policy.
Limitations to understand before signing
Some content may require separate agreements or additional connections. Staff need training, and online booking businesses need ongoing technical support. Refund and exchange capabilities can differ by airline, content source and API product. Commercial commitments can also make a poorly matched contract expensive.
Ask for a demonstration using your actual routes and servicing scenarios. A search demo alone is not enough to judge whether the system will support daily operations.
GDS vs CRS, OTA, API and NDC: what is the difference?
These terms describe different parts of the travel ecosystem.
| Term | Main role | Simple example |
|---|---|---|
| GDS | Distributes connected travel content to sellers. | An agency searches multiple suppliers. |
| CRS | A supplier's central reservation system manages its reservations and inventory. | A hotel's system manages room availability. |
| OTA | An online business sells travel to customers. | A traveler books through a website or app. |
| API | An interface lets software systems exchange requests and responses. | A portal requests flight offers. |
| NDC | An IATA data exchange standard supports airline offers and orders. | An airline distributes an offer with additional services. |
Terminology can overlap: “CRS” is sometimes used more broadly in travel. Here, it means the supplier reservation system, while GDS means the distribution network connecting suppliers and sellers.
GDS and NDC are not direct equivalents. One is a distribution system; the other is a communication standard. A GDS can distribute NDC content alongside traditional content. Features and servicing still depend on the airline and connection.
For a portal project, understand both GDS Air API integration features and the responsibilities that remain with your agency.
How can a travel agency get GDS access?
There are several routes. Confirm eligibility and commercial terms directly with the provider or authorized partner.
- Direct provider relationship: Suitable where the agency's requirements, volume and operational setup support the agreement.
- Consolidator or host arrangement: An agency works through a partner under agreed content, ticketing and servicing terms.
- Booking platform or API product: Access comes through a specific solution. Its coverage and production requirements may differ from other products sold by the same provider.
GDS access, API access and ticketing authority are separate matters. For example, Amadeus Self-Service flight booking requires a consolidator arrangement for ticket issuance. That product's conditions should not be generalized to every Amadeus offering.
For agencies in India, identify who will issue tickets and handle airline settlement. IATA's Billing and Settlement Plan, or BSP, supports settlement between participating airlines and accredited agents. Accreditation and airline authorization need separate attention; adding an API does not replace either. Read our guide to IATA certification for an Indian travel agency for related background.
What does GDS access and integration cost?
There is no single reliable price for every agency. Ask for a written breakdown covering:
- Setup, onboarding and any certification requirements.
- Platform subscriptions and API usage charges, if applicable.
- Booking or segment terms and minimum volume commitments.
- Consolidator fees, deposits and payment arrangements.
- Portal development, hosting, maintenance and staff training.
- Changes, refunds and out-of-hours support.
Compare total operating cost against realistic booking volume. Confirm whether a deposit is refundable and what happens if you miss a contract commitment. Also check termination terms and how existing bookings will be serviced if you change partners.
How to choose the right GDS and integration partner
Use this practical selection checklist before accepting a proposal:
- Test your route mix: Ask for results on routes your customers actually buy, including domestic and international journeys.
- Check usable content: Confirm airlines, negotiated fares, baggage, ancillaries and relevant hotel or car content.
- Check the complete lifecycle: Demonstrate booking, ticketing, schedule changes, cancellation, exchange and refund handling.
- Name the responsible party: Record who owns ticket issuance, settlement, customer support and escalation.
- Review commercials: Compare fees, commitments, deposits and exit conditions in writing.
- Assess technical readiness: Confirm production approval, documentation, testing access and support arrangements.
- Plan reconciliation: Decide how payments, supplier records and booking reports will be matched.
A useful acceptance test is simple: can your team explain what happens when payment succeeds but booking confirmation is delayed? If nobody owns the next step, the operational design needs more work.
What should be ready before development starts?
Prepare your business model, expected volume, target markets, supplier agreements, ticketing arrangement and servicing policy. For a website or app, also define passenger data handling, payment responsibilities and the customer confirmation process.
Test unsuccessful journeys as carefully as successful ones: changed fares, unavailable inventory, supplier timeouts and duplicate booking attempts. Your team needs a safe way to check booking status before retrying. Support staff should be able to find the right supplier record without asking customers to repeat the entire process.
SRDV's GDS Air API integration services overview explains the implementation context. Supplier approvals and commercial agreements remain separate from software development.
The future of GDS: NDC, connected content and AI
What is happening now?
GDS platforms and agency tools already support combinations of traditional and NDC content. Travelport's documentation, for example, describes different capabilities and workflows across content types. Agencies should verify what their chosen airline connection supports rather than assuming every function works identically.
This means a future-ready buying decision should cover servicing and support, not just the number of search results. An attractive offer is useful only if the business can fulfill and manage it properly.
What should agencies prepare for?
Plan for content from more than one source, consistent fare-rule presentation and reliable booking records. Choose technology that can add approved connections without rebuilding the entire customer experience.
AI-assisted search and support are developing areas. Our practical recommendation is to use AI to help explain verified offers or assist staff, while keeping live supplier data and explicit traveler approval in the booking flow. An AI-generated answer should not be treated as a confirmed fare, ticket or refund entitlement.
No agency can predict one final distribution model. Build clear responsibilities, adaptable workflows and strong support processes so that changing content channels are easier to manage.
Frequently asked questions about GDS
1. What does GDS stand for in travel?
GDS stands for Global Distribution System. It connects travel suppliers with agencies and other sellers so they can search and book connected travel services.
2. What are examples of a GDS?
Amadeus, Sabre and Travelport are major examples. Travelport operates Galileo, Apollo and Worldspan.
3. Does a GDS always offer the cheapest flight?
No. Prices depend on the airline, fare, route, agreement and content channel. Compare the total price, baggage and conditions before choosing.
4. Is a PNR the same as a ticket?
No. A PNR is a reservation record. Ticket issuance is a separate step, so verify the ticket number and status before confirming that a flight is ticketed.
5. Can a small or non-IATA agency use GDS content?
It may be possible through an eligible consolidator, host or booking solution. Access and ticketing depend on the specific agreement; the agency does not automatically receive its own airline ticketing authority.
6. Is NDC replacing every GDS connection?
NDC is a data exchange standard, not a replacement company or booking platform. GDS providers can distribute NDC content. Agencies should assess the content and servicing available through each connection.
7. How much does GDS API integration cost?
Costs vary with scope, provider terms, booking volume and support. Request separate figures for supplier access, ticketing arrangements, development and ongoing operations.
8. Can SRDV help connect a GDS to our travel portal?
SRDV Technologies offers travel API integration services. Discuss your business model, provider access and ticketing arrangement with the team to define the right project scope.
Planning GDS integration for your agency?
Bring your target routes, expected booking volume, current supplier access and after-sales requirements. We can discuss the portal and integration work your business needs.
Discuss your travel API integration requirements with SRDV Technologies.
Sources and further reading
Researched on 24 October 2026. Provider capabilities and agreements can change; confirm current terms before making a business decision.
- Amadeus: what a GDS is and how it works.
- Sabre Developer Hub: travel marketplace overview.
- Travelport: platform and GDS FAQs.
- Travelport: NDC and GDS workflow guide.
- IATA: New Distribution Capability.
- IATA: Billing and Settlement Plan.
- Amadeus for Developers: Self-Service booking and ticketing FAQs.
