If you're starting a career as a travel agent or running an agency, one of the first decisions you'll face is which GDS to learn or adopt. Amadeus, Sabre, and Galileo (part of Travelport) each dominate different regions and offer different strengths. Here's an honest comparison to help you decide.
Quick Overview
| GDS | Strongest Region | Known For |
|---|---|---|
| Amadeus | Europe, parts of Asia | Largest global market share, strong European carrier content |
| Sabre | North America | Deep US domestic content, widely used by US agencies |
| Galileo (Travelport) | Global, broad footprint | Strong international and multi-carrier coverage |
Amadeus
Amadeus is generally considered the largest GDS by global market share, with particularly strong coverage of European airlines and a large presence across Asia and the Middle East. If you're based in Europe or work primarily with European carriers, Amadeus is often the default choice agencies are trained on.
Strengths: Strong European airline content, widely used internationally, large training resources available.
Considerations: The PNR format has its own conventions that take a little time to get used to if you're switching from another GDS.
Sabre
Sabre has deep roots in the US market — it was the first computerized airline reservation system, built by American Airlines and IBM in the 1960s. It remains dominant in North America and is often the GDS of choice for agencies focused on the US domestic market.
Strengths: Strong US domestic content, well-established interface (especially Sabre Red 360), large North American agency network.
Considerations: Less dominant outside North America compared to Amadeus or Travelport.
Galileo (Travelport)
Galileo, now part of the Travelport family of products, has a broad global footprint and is often praised for flexible multi-carrier search capabilities. Many serious international travel platforms integrate with at least two GDS providers, and Galileo is frequently one of them.
Strengths: Broad global coverage, flexible for multi-carrier itineraries.
Considerations: Market presence varies more by agency and region than a clean geographic split.
How the PNR Formats Differ
All three systems store fundamentally the same information — passenger names, flight segments, status codes — but format it slightly differently. Spacing, day-of-week markers, and how booking class is attached to the flight number can all vary. This is part of why a PNR converter that only handles one GDS format often breaks on PNRs from another system.
If your agency deals with clients flying multiple regions — say, European outbound flights and US domestic connections — you may end up working with more than one GDS regardless of which one you "choose." A tool that auto-detects and converts PNRs from any GDS format saves you from needing separate processes for each.
Which Should You Learn First?
If you don't yet know which one to start with, base the decision on your market, not on which is "best" overall — there's no universally superior choice:
- Focused on Europe or Asia? Amadeus is the most common starting point.
- Focused on US domestic travel? Sabre is the more conventional choice.
- Handling diverse, international, multi-carrier bookings? Galileo/Travelport is worth strong consideration.
Many established agents end up learning more than one GDS over the course of their career, since different airline contracts and agency partnerships sometimes require it.
One Tool for Every GDS
PNRGenius converts PNRs from Amadeus, Sabre, Galileo, and Worldspan — no need to switch tools based on the format.
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