ICAO Lookup 3 articles
How to find ICAO codes.
ICAO Codes for Every Country: Lookup Table
Search ICAO codes organized by country prefix. Over 40,00...
ICAO Code Lookup: How to Find Any Airport's 4-Letter Code
Complete guide to searching our ICAO airport database. Fi...
Finding ICAO Codes for Small Airfields and Airstrips
Many small airfields only have ICAO codes, not IATA. How ...
ICAO Regions 3 articles
ICAO region prefixes and structure.
ICAO Regional Prefixes: A Complete Map
The world divided by ICAO regions — from K (USA) to Y (Au...
ICAO Region Codes for the South Pacific
Exploring the N, A, and Y prefixes across Oceania and the...
How ICAO Regions Help Air Traffic Control
The geographic structure of ICAO codes helps ATC identify...
ICAO vs IATA 3 articles
Differences between the two systems.
Why Airlines Need Both IATA and ICAO Codes
Both systems serve essential but different purposes in av...
IATA vs ICAO: When to Use Each Code System
Pilots use ICAO, passengers use IATA. Understanding the d...
Converting Between IATA and ICAO Codes
Our database makes it easy to convert between IATA and IC...
Military ICAO 3 articles
ICAO codes for military airfields.
Joint-Use Airports: Military and Civilian ICAO Codes
Airports shared by military and civilian aviation often h...
Military Airfield ICAO Codes: Identification Guide
How to identify military airfields by their ICAO codes. R...
Former Military Airfields Now Using Civilian ICAO Codes
Many civilian airports started as military bases. Their I...
ICAO Naming 3 articles
How ICAO assigns codes.
ICAO Conversion 3 articles
Convert between IATA and ICAO.
Mastering ICAO Code Conversion for Flight Planning
Flight planners need to work fluently with both systems. ...
ICAO to IATA Conversion Guide
Quick reference for converting between ICAO and IATA code...
Automated ICAO/IATA Conversion Tools
Our API and tools for automatically converting between IC...
ICAO History 3 articles
The history of the ICAO coding system.
The History of ICAO Airport Codes
How ICAO developed its four-letter code system in the 194...
Evolution of the ICAO Code System Over 80 Years
From simple beginnings to covering 45,000+ airfields worl...
When ICAO Codes Changed: Historical Renumbering
Some ICAO codes have been reassigned or changed as countr...