Every airline booking starts as a passenger name record. When a flight is reserved through an airline website, a travel agency or a corporate booking tool, the reservation system creates a PNR and returns a record locator: the six-character code of letters and numbers shown on a confirmation email.
What does a PNR contain?
Airline and agency training commonly teaches the five elements a PNR needs before it can be saved, remembered as PRINT:
- Phone — a contact for the traveller or agency.
- Received from — who requested the booking.
- Itinerary — the flight segments or other travel services.
- Name — each passenger, as it appears on their travel document.
- Ticketing arrangement — when and how the booking will be ticketed.
Beyond those, a PNR often carries special service requests (for meals, wheelchair assistance or passport details), frequent flyer numbers, fare calculations, agency remarks and, for corporate bookings, data such as cost centre or trip purpose.
How do the record locator, PNR and ticket number differ?
These three are often confused. The record locator identifies the PNR. The same trip can have more than one locator: a booking made through a global distribution system has the GDS locator, and each airline on the itinerary creates its own record with its own locator. The electronic ticket is a separate record with a 13-digit number, the first three digits identifying the issuing airline. A reservation that is never ticketed can be cancelled automatically when its ticketing deadline passes.
| Compared on | Record locator (booking reference) | E-ticket number |
|---|---|---|
| What it identifies | The booking: the PNR | One passenger’s ticket |
| Format | Six letters and numbers | 13 digits; the first three identify the airline |
| When it is created | When the booking is made | When the ticket is issued, after payment |
| Who it covers | Everyone travelling together on the booking | One traveller |
| Where you find it | On the booking confirmation | On the e-ticket and the booking confirmation |
How does PNR data reach governments?
Because a PNR contains itinerary, contact and payment details, many governments require airlines to transmit PNR data for flights to, from or through their territory. PNRGOV is the standard message format for sending that data, developed by an IATA-led working group of airlines and governments and maintained under a joint committee of the World Customs Organization, IATA and ICAO. In the European Union, Directive (EU) 2016/681 governs how airlines transfer PNR data to national authorities and how it may be used to fight terrorism and serious crime.
PNR data is different from advance passenger information (API). API is travel document data — name, date of birth, passport number — typically collected at check-in. PNR data is booking data, created when the trip is reserved.
What is a PNR number in Indian Railways?
In India, PNR is just as familiar from rail travel. Indian Railways issues a 10-digit PNR number for each train booking, which passengers use to check reservation and waitlist status. The idea is the same — a reference to a booking record — though the format differs from an airline record locator.
Why do PNRs matter in corporate travel?
The PNR is the unit most corporate travel systems key on. Traveller tracking, duty-of-care alerts, expense matching and reporting all depend on accurate PNR data. When a traveller changes a flight directly with the airline, the airline’s record updates but the agency PNR may not, which is how travel managers end up with reports that disagree with where people actually are.
Related terms such as GDS, NDC and TMC are defined in the travel technology lexicon.