Guide

Airline Ticket Stock Numbers: How to Identify Any Airline by 3-Digit Ticket Prefix

Jun 14, 2026 IATA Codes Aviation Team

The Secret 3-Digit Code on Your Airline Ticket

When you purchase an e-ticket, your 13-digit ticket confirmation number always begins with a 3-digit numerical prefix (e.g., 006-1234567890 or 075-9876543210). This prefix identifies the validating airline that issued the ticket stock and holds financial responsibility for the booking.

Why Ticket Stock Prefixes Matter

  • Code-share Flights: You might be flying on an American Airlines plane (AA 100), but if your ticket starts with 057, Air France issued the ticket.
  • Baggage Allowances: Free baggage rules and change fees are governed by the validating carrier's ticket stock rules.
  • Refunding & Reissuing: Any voluntary changes or refunds must be processed through the issuing airline associated with the 3-digit code.
Common 3-Digit Ticket Prefixes
  • 006: Delta Air Lines (DL)
  • 016: United Airlines (UA)
  • 001: American Airlines (AA)
  • 075: Iberia (IB)
  • 057: Air France (AF)
  • 074: KLM Royal Dutch Airlines (KL)
  • 220: Lufthansa (LH)
  • 176: Emirates (EK)

Travel agents working in Amadeus, Sabre, or Travelport can quickly decode ticket records using our PNR Decoder & GDS Translator.

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