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An IATA airport code, also known as an IATA location identifier, is a three-letter code assigned to airports and metropolitan areas worldwide. These codes are used to identify airports and are often displayed on baggage tags. The codes are determined by the International Air Transport Association (IATA) and published in the IATA Airline Coding Directory. In large metropolitan areas, airport codes are typically named after the airport itself, rather than the city it serves. For example, Chicago's O'Hare International Airport is coded ORD for its former name, Orchard Field. These codes are useful for searching for flights to specific airports and navigating the aviation industry.
| Characteristics | Values |
|---|---|
| Name | IATA airport code, IATA location identifier, IATA station code, location identifier |
| Description | A three-letter geocode designating many airports and metropolitan areas around the world |
| Governing Body | International Air Transport Association (IATA) |
| Governing Body Headquarters | Montreal, Canada |
| Code Publication | Semi-annual in the IATA Airline Coding Directory |
| Examples | BDL for Bradley International Airport in Hartford, Connecticut; YOW for Ottawa; YWG for Winnipeg; YYZ for Toronto Pearson |
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What You'll Learn
IATA airport codes are three-letter geocodes
An IATA airport code, also known as an IATA location identifier, is a three-letter geocode designating airports and metropolitan areas worldwide. The International Air Transport Association (IATA) defines these codes, which are prominently displayed on baggage tags at airport check-in desks. The assignment of these codes is governed by IATA Resolution 763 and administered by the IATA's headquarters in Montreal, Canada. The codes are published twice a year in the IATA Airline Coding Directory.
These three-letter codes are used to identify locations, such as airports, bus or ferry stations involved in intermodal airline travel. Airlines and CRSs may request a unique three-letter code for a location. The IATA Coding Directory provides a comprehensive list of these codes, with up to five search results per query.
The use of these codes can sometimes be challenging to decipher. For instance, some Canadian airport codes start with a "Y", indicating the presence of a weather station, while others use the two-letter code of the nearest radio beacons. In large metropolitan areas, airport codes may be named after the airport itself rather than the city it serves, such as Chicago's O'Hare International Airport (ORD).
Some airports have also started using their IATA codes as brand names, such as Calgary International Airport (YYC) and Vancouver International Airport (YVR). In rare cases, the code may come from the airport's unofficial name, like Kahului Airport's OGG, named after local aviation pioneer Jimmy Hogg.
The IATA coding system provides a standardised method of identifying airports and related locations, facilitating efficient communication and organisation in the aviation industry.
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Codes are defined by the International Air Transport Association (IATA)
An IATA airport code, also known as an IATA location identifier, IATA station code, or simply a location identifier, is a three-letter geocode designating many airports and metropolitan areas around the world. These codes are defined by the International Air Transport Association (IATA) and are essential for the smooth functioning of the travel industry. They are used for the identification of an airline, its destinations, and its traffic documents.
The assignment of these codes is governed by IATA Resolution 763 and is administered by the IATA's headquarters in Montreal, Canada. The codes are published semi-annually in the IATA Airline Coding Directory. For instance, BDL stands for Bradley International Airport in Hartford, Connecticut, and BWI stands for Baltimore/Washington International Airport. Some codes are derived from the airport's former or unofficial name, such as Chicago's O'Hare International Airport, coded ORD for its original name, Orchard Field, and Kahului Airport's OGG, for local aviation pioneer Jimmy Hogg.
In large metropolitan areas, airport codes are often named after the airport itself, while another code is reserved for the city it serves. For example, Buenos Aires (BUE) – Ezeiza (EZE) is named after the suburb of Ezeiza Partido where the airport is located, while Aeroparque Jorge Newbery (AEP) is in the city proper.
Canada's airport codes are particularly unusual, bearing little to no similarity to the city names, such as YUL for Montréal and YYZ for Toronto. These codes originated from the two-letter codes used to identify weather reporting stations in the 1930s. The letter ""Y" indicated the presence of a weather station, while "W" indicated the absence of one.
IATA also provides codes for airport handling entities and certain railway stations. These codes are used in baggage tags and are essential for identifying checked luggage. Additionally, IATA offers IATA Numeric Codes, which are unique seven-digit codes assigned to IATA-certified travel agencies for distributing air tickets and gaining industry recognition.
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Codes are published in the IATA Airline Coding Directory
The IATA Airline Coding Directory (ACD) is the official industry source for airline and airport codes worldwide. It is the only official source for IATA airline and location codes. The directory is updated daily with all the latest modifications so that users can rely on the most up-to-date data to power their operations. The IATA Codes are an integral part of the travel industry and essential for the identification of an airline, its destinations, and its traffic documents. They are also fundamental to the smooth running of hundreds of electronic applications built around these coding systems for passenger and cargo traffic purposes.
The Airline Designator Codes are used as a single point of reference for reservations, schedules, timetables, telecommunications, cargo documentation, legal, and other aviation and travel-related purposes. The Location Identifiers contain data on IATA location codes for airports, intermodal/ground transport locations, and cities. Airlines and CRSs may request the assignment of a unique three-letter code to identify a location like an airport. Bus or ferry stations may be eligible for an IATA location identifier if these locations are involved in intermodal airline travel.
The IATA Coding Directory is available for business usage. The codes are published semi-annually in the IATA Airline Coding Directory. Alphabetical lists of airports sorted by IATA code are available. A list of railway station codes, shared in agreements between airlines and rail lines such as Amtrak, SNCF, and Deutsche Bahn, is also available.
The assignment of these codes is governed by IATA Resolution 763 and is administered by the IATA's headquarters in Montreal, Canada. An example of how these codes is through the characters prominently displayed on baggage tags attached at airport check-in desks.
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Canadian airport codes often start with 'Y'
When booking travel, especially air travel, you may come across airport codes, which are three-letter codes that uniquely identify a specific airport. These codes are used by airlines, travel agencies, and passengers to ensure clarity and avoid confusion when booking flights and navigating through airports. One interesting pattern you may have noticed is that Canadian airport codes often start with the letter "Y."
The reason for this peculiar convention lies in history and geography. In the early days of aviation, when radio signals were used for navigation, Canadian airports were assigned codes starting with "Y" to represent the magnetic north direction. This was a practical choice, as Canada is located in the northern hemisphere, and its airports were primarily oriented towards magnetic north for navigation.
Over time, as aviation technology evolved and global navigation systems became more sophisticated, the original purpose of the "Y" designation became less relevant. However, the code has persisted and become a unique identifier for Canadian airports. Today, it serves as a legacy and a practical way to distinguish Canadian airports from those in other countries.
Not all Canadian airport codes start with "Y." There are exceptions, particularly in cases where an airport has a unique historical or geographical significance. For example, some smaller or more remote airports in Canada may have codes that begin with "CY," indicating a smaller airport or one serving a specific region. Additionally, new airports or those with unique circumstances may be assigned codes that deviate from the "Y" pattern.
It's important to note that while the "Y" prefix is a common feature of Canadian airport codes, it's not the only element that defines them. The remaining two letters in the three-letter code are typically chosen to represent the city or region where the airport is located. For example, Toronto Pearson International Airport's code is "YYZ," with the "YY" representing the magnetic north designation and the "Z" indicating its location in Toronto ("Z" being the next available letter after "Y").
So, the next time you're booking a flight to or within Canada and see an airport code starting with "Y," you'll know that it's a Canadian airport code with a historical and navigational significance.
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Codes can be named after the airport or the city it serves
An IATA airport code is a three-letter geocode used to identify airports and metropolitan areas worldwide. These codes are defined by the International Air Transport Association (IATA) and are published in the IATA Airline Coding Directory.
The codes can be named after the airport or the city it serves. In large metropolitan areas, airport codes are often named after the airport itself, while another code is reserved for the city. For example, Chicago (CHI) – O'Hare (ORD), where ORD is derived from the airport's former name, Orchard Field. Another example is Jakarta (JKT) – Soekarno–Hatta (CGK), where CGK is derived from Cengkareng, the district in which the airport is located.
In some cases, the code may come from the airport's unofficial name, such as Kahului Airport's OGG, which is named after local aviation pioneer Jimmy Hogg. The code may also come from the airport's former name, such as Chicago's O'Hare International Airport (ORD), or Orlando International Airport's MCO, which stands for McCoy Air Force Base.
When the Canadian government established airports, it used existing railway codes and added a "Y" to indicate the presence of a weather station or another letter if it lacked one. This resulted in most major Canadian airport codes starting with "Y", followed by two letters from the city's name, such as YOW for Ottawa and YYC for Calgary. However, some Canadian airports use the two-letter code of the nearest radio beacons, such as YQX in Gander.
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Frequently asked questions
An airport departure code, also known as an IATA location identifier, is a three-letter code that designates airports and metropolitan areas worldwide.
Airport codes are often named after the airport itself or the city it serves. In some cases, the code comes from the airport's former or unofficial name. In large metropolitan areas, another code may be reserved to refer to the city itself, which can be used to search for flights to any of its airports.
You can use the IATA Airline Coding Directory to find the three-letter code for a specific airport or to identify which airport uses a particular code.
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