IATA Code

An IATA code is a three-letter airport identifier assigned by the International Air Transport Association (IATA). These codes are primarily used for passenger-facing applications such as tickets, baggage tags, boarding passes, reservation systems, and travel itineraries. While not used in official air traffic control or flight planning, IATA codes are the most recognized airport codes by the general public.

• Identify airports in airline reservation systems
• Label luggage and boarding passes for route routing
• Communicate travel data in a passenger-friendly format
• Serve as abbreviated references in schedules and ticketing platforms

• Often derived from the airport name (e.g., LAX for Los Angeles)
• May reflect city names or historical origins (e.g., ORD for Chicago O’Hare, originally Orchard Field)
• In some cases, multiple airports in a city have distinct IATA codes (e.g., JFK, LGA, and EWR for New York City)

• ❌ IATA codes are not valid for flight plan filing, ATC communication, or CPDLC
• ❌ Some IATA codes are ambiguous or reused across cargo and passenger airports
• ✅ Always use ICAO codes for all operational and safety-critical functions

• ✅ Know both IATA and ICAO codes for major destinations
• ✅ Don’t enter IATA codes in flight management systems — they won’t work
• ✅ Use IATA codes for flight briefings with passengers, travel documents, and airport signage
• ✅ Learn and compare codes using LearnATC’s airport and FIR identification drills