What Is a 6-Character Airline PNR?
A Passenger Name Record (PNR) is a 6-character alphanumeric booking reference (such as K8M4P2) created in the airline’s reservation system (Amadeus, Sabre, or Navitaire) when your live flight order is confirmed.
How to Use Your PNR on the Operating Airline Website
Enter your 6-character PNR and passenger last name under "Manage Trips" or "Manage Booking" on the airline’s website or mobile app to select seats, enter Known Traveler Numbers (TSA PreCheck), add special meals, and complete online check-in 24 hours prior to departure.
Codeshare Flights: Marketing vs. Operating Carrier
If your itinerary involves a partner airline (for example, a United ticket operated by ANA or Lufthansa), the operating carrier may use a separate 6-character locator for seat selection and airport check-in.
Frequently Asked Questions
When can I check in for my flight using my PNR?
US airlines open online check-in 24 hours before scheduled departure; many international airlines (such as British Airways, Lufthansa, Singapore Airlines, and Emirates) open check-in 24 to 48 hours prior.
Where do I add my TSA PreCheck Known Traveler Number?
You can enter your KTN in the passenger details when booking or add it anytime under Manage Booking on the operating airline website before printing your boarding pass.