For example, it's possible to have the same PNR for different flights if a round-trip or connecting flight is booked with the same airline. If the connecting flight involves two airlines that don't have an agreement, there may be different PNRs for each segment of the trip.

Yes, it is standard practice in the aviation industry for multiple passengers to share the same Passenger Name Record (PNR), also known as a booking reference. When you book travel for a group or family under a single transaction, every individual on that itinerary is assigned the same 6-character alphanumeric PNR. This ensures that the airline's system treats the group as a single unit, which is vital for maintaining seat proximity, keeping the group together during flight rebookings, and ensuring that checked baggage is linked to the correct party. In 2026, a single PNR can typically accommodate up to nine passengers; larger groups are often split into multiple PNRs that are then "TCP" (To Complete Party) linked in the backend system. While each passenger shares the PNR, they will still have unique, individual e-ticket numbers (usually a 13-digit code). If one person needs to change their plans while others do not, an agent must "divide" or "split" the PNR, moving that individual to a brand-new reference code while leaving the remaining travelers on the original record.