Editing IATA airport code (section)

====Airports without codes====
A lot of minor airfields without scheduled passenger traffic have [[ICAO airport code|ICAO codes]] but not IATA codes, since the four letter codes allow a larger number of codes.  IATA codes are mainly used for passenger services such as tickets, and ICAO codes by pilots. In the US, such airfields use [[Location identifier|FAA codes]] instead of ICAO.

There are airports with scheduled service for which there are ICAO codes but not IATA codes, such as Nkhotakota Airport/Tangole Airport in [[List of airports in Malawi|Malawi]] or [[Chōfu Airport]] in Tokyo, Japan. There are also several minor airports in [[Russia]] (e.g., [[Omsukchan Airport]]) which lack IATA codes and instead use [[Location identifier|internal Russian codes]] for booking. Flights to these airports cannot be booked through the international air booking systems or have international luggage transferred there, and thus, they are booked instead through the airline or a domestic booking system. Several [[List of airports in Greenland|heliports in Greenland]] have 3-letter codes used internally which might be IATA codes for airports in faraway countries.

There are several airports with scheduled service that have not been assigned ICAO codes that do have IATA codes, especially in the U.S. For example, several airports in Alaska have scheduled commercial service, such as [[Stebbins Airport|Stebbins]] and [[Nanwalek Airport|Nanwalek]], which use FAA codes instead of ICAO codes.

Thus, neither system completely includes all airports with scheduled service.