What is the difference between IATA and ICAO airport codes?

What is the difference between IATA and ICAO airport codes?

• A. IATA codes are three letters used for ticketing and baggage, while ICAO codes are four letters used for air traffic control and flight operations.
• B. IATA codes are four letters used for ATC; ICAO codes are three letters used for tickets.
• C. IATA codes are two letters used for passenger manifests; ICAO codes are five letters used for weather.
• D. IATA codes are three letters used for navigation; ICAO codes are six letters used for flight crew.

Answer: (A)

Two airport code systems serve different needs: IATA and ICAO. IATA codes are three-letter identifiers used by the travel industry for tickets, baggage handling, schedules, and passenger information. They appear on boarding passes, luggage tags, and most consumer-facing materials because they’re simple and easy to remember.

ICAO codes are four-letter identifiers used for air traffic control, flight planning, and operations data. They provide a globally standardized way to identify airports in navigation, weather reports, and flight plans, and their structure often includes a regional or country prefix to ensure uniqueness worldwide. For example, Los Angeles International uses IATA code LAX and ICAO code KLAX; Paris Charles de Gaulle uses IATA CDG and ICAO LFPG.

So, the difference is that IATA codes are three letters for tickets and baggage, designed for passenger use, while ICAO codes are four letters for ATC and flight operations, designed for precise, global aviation communication and planning.