A flight confirmation number, often referred to as a Record Locator or PNR (Passenger Name Record), is a unique alphanumeric code used by airlines to identify your specific reservation. In 2026, these codes almost universally consist of six characters, which can be a mix of capital letters and numbers (e.g., G8H3K2 or BKLMPQ). This code is generated the moment your booking is finalized and is typically displayed prominently at the top of your confirmation email and on your digital boarding pass. It is distinct from your 13-digit ticket number, which usually starts with a specific airline prefix (like 001 for American Airlines). While the PNR is technically the database entry containing your itinerary and personal details, the confirmation number is the "key" used to access that data. It is vital to keep this number private, as anyone with your last name and confirmation code can often view your travel details, change your seat, or even cancel your flight through the airline's "Manage Booking" portal.