Editing IATA airport code (section)

====Cities or airports changing names====
Many cities retain historical names in their airport codes, even after having undergone an official name/spelling/transliteration change:
* In [[Angola]]: [[Sumbe Airport|NDD]] for [[Sumbe]] (formerly Novo Redondo), [[Albano Machado Airport|NOV]] for [[Huambo]] (formerly Nova Lisboa), [[Chitato Airport|PGI]] for [[Chitato]] (formerly Portugália), [[Saurimo Airport|VHC]] for [[Saurimo]] (formerly Henrique de Carvalho), [[Lubango Airport|SDD]] for [[Lubango]] (formerly Sá da Bandeira), [[Menongue Airport|SPP]] for [[Menongue]] (formerly Serpa Pinto), and [[Joaquim Kapango Airport|SVP]] for [[Cuíto]] (formerly Silva Porto)
* In [[Armenia]]: [[Shirak Airport|LWN]] for [[Gyumri]] (formerly Leninakan)
* In [[Azerbaijan]]: [[Ganja International Airport|KVD]] for [[Ganja, Azerbaijan|Ganja]] (formerly Kirovabad)
* In [[Bangladesh]]: [[Hazrat Shahjalal International Airport|DAC]] for [[Dhaka]] (formerly Dacca)
* In [[Cambodia]]: [[Sihanouk International Airport|KOS]] for [[Sihanoukville (city)|Sihanoukville]] (formerly Kampong Som)
* In [[Canada]]: [[Iqaluit Airport|YFB]] for [[Iqaluit]] (formerly Frobisher Bay), YHU for [[MET – Montreal Metropolitan Airport]] (formerly Montréal/Saint-Hubert Airport)
* In [[China]]: [[Beijing Capital International Airport|PEK]] for Beijing (formerly Peking), [[Tianjin Binhai International Airport|TSN]] for [[Tianjin]] (formerly Tientsin), [[Chongqing Jiangbei International Airport|CKG]] for [[Chongqing]] (formerly Chungking), [[Nanjing Lukou International Airport|NKG]] for [[Nanjing]] (formerly Nanking), [[Jinan Yaoqiang International Airport|TNA]] for [[Jinan]] (formerly Tsinan), [[Qingdao Jiaodong International Airport|TAO]] for [[Qingdao]] (formerly Tsingtao), [[Chengdu Shuangliu International Airport|CTU]] for [[Chengdu]] (formerly Chengtu), [[Guiyang Longdongbao International Airport|KWE]] for [[Guiyang]] (formerly Kweiyang), [[Xi'an Xiguan Airport|SIA]] for [[Xi'an]] (formerly Sian), and [[Guangzhou Baiyun International Airport|CAN]] for [[Guangzhou]] (formerly Canton). The older IATA codes follow [[Chinese postal romanization]], introduced in 1906, officially abolished in 1964 and in use well into the 1980s, while gradually superseded by [[Pinyin]].
** [[Zhangjiajie Hehua International Airport|DYG]] for [[Zhangjiajie]] (formerly Dayong; a genuine change in city name, rather than just a change of romanization)
* In [[Czech Republic|Czechia]]: [[Holešov Airport|GTW]] for Holešov Airport serving [[Zlín]] (formerly Gottwaldov)
* In the [[Democratic Republic of Congo]]: [[Ilebo Airport|PFR]] for [[Ilebo]] (formerly Port-Francqui)
* In [[Fiji]]: [[Malolo Lailai Airport|PTF]] for [[Malolo Lailai]] (formerly Plantation Island, Fiji)
* In [[Greenland]]:  most airports, including [[Kangerlussuaq Airport|SFJ]] for [[Kangerlussuaq]] (formerly Søndre Strømfjord), [[Nuuk Airport|GOH]] for [[Nuuk]] (formerly Godthåb) and [[Ilulissat Airport|JAV]] for [[Ilulissat]] (Jacobshavn)
* In [[India]]: [[Chhatrapati Shivaji International Airport|BOM]] for [[Mumbai]] (formerly Bombay), [[Netaji Subhash Chandra Bose International Airport|CCU]] for [[Kolkata]] (formerly Calcutta), [[Chennai International Airport|MAA]] for [[Chennai]] (formerly Madras), and [[Kannur International Airport|CNN]] for [[Kannur]] (formerly Cannanore)
* In [[Indonesia]]: [[Radin Inten II Airport|TKG]] for [[Bandar Lampung]] (formerly Tanjung Karang), [[Sultan Hasanuddin International Airport|UPG]] for [[Makassar]] (formerly Ujung Pandang). In addition, when the [[Enhanced Indonesian Spelling System]] was introduced in 1972, a few older IATA codes retained the previous spelling: [[Sultan Iskandar Muda International Airport|BTJ]] for [[Banda Aceh]] (formerly Banda Atjeh), [[Sentani International Airport|DJJ]] for [[Jayapura]] (formerly Djajapura), and [[Adisucipto International Airport|JOG]] for [[Yogyakarta]] (formerly Jogjakarta).
* In [[Kazakhstan]]: [[Nursultan Nazarbayev International Airport|NQZ]] for [[Astana]] (formerly Nur-Sultan and Tselinograd (TSE)), [[Aktau Airport|SCO]] for [[Aktau]] (formerly Shevchenko), [[Atyrau Airport|GUW]] for [[Atyrau]] (formerly Guryev), [[Kokshetau Airport|KOV]] for [[Kokshetau]] (formerly Kokchetav), [[Taraz Airport|DMB]] for [[Taraz]] (formerly Dzhambyl), [[Semey Airport|PLX]] for [[Semey]] (formerly Semipalatinsk), [[Shymkent Airport|CIT]] for [[Shymkent]] (formerly Chimkent), and [[Zhezkazgan Airport|DZN]] for [[Jezkazgan]] (formerly Dzhezkazgan)
* In [[Kyrgyzstan]]: [[Manas International Airport|FRU]] for [[Bishkek]] (formerly Frunze)
* In [[Madagascar]]: [[Arrachart Airport|DIE]] for [[Antsiranana]] (formerly Diego-Suarez), [[Port Bergé Airport|WPB]] for [[Boriziny]] (formerly Port Bergé)
* In [[Moldova]]: [[Chișinău International Airport|RMO]] for [[Chișinău]] (formerly Kishinev (KIV))
* In [[Montenegro]]: [[Podgorica Airport|TGD]] for [[Podgorica]] (formerly Titograd)
* In [[Mozambique]]: [[Xai-Xai Airport|VJB]] for [[Xai-Xai]] (formerly João Belo), [[Chimoio Airport|VPY]] for [[Chimoio]] (formerly Vila Pery), [[Cuamba Airport|FXO]] for [[Cuamba]] (formerly Nova Freixo), and [[Chokwe Airport|TGS]] for [[Chokwe, Mozambique|Chokwe]] (formerly Vila Trigo de Morais)
* In [[Myanmar]]: [[Yangon International Airport|RGN]] for [[Yangon]] (formerly Rangoon), [[Thandwe Airport|SNW]] for [[Thandwe]] (formerly Sandoway), and [[Dawei Airport|TVY]] for [[Dawei]] (formerly Tavoy)
* In [[Pakistan]]: [[Faisalabad International Airport|LYP]] for [[Faisalabad]] when the city changed its name from Lyallpur to Faisalabad in honour of the [[Faisal of Saudi Arabia|King Faisal of Saudi Arabia]].
* In [[Russia]]: [[Pulkovo Airport|LED]] for [[St. Petersburg]] (formerly Leningrad), [[Strigino International Airport|GOJ]] for [[Nizhny Novgorod]] (formerly Gorky), [[Koltsovo Airport|SVX]] for [[Yekaterinburg]] (formerly Sverdlovsk), [[Kurumoch International Airport|KUF]] for [[Samara, Russia|Samara]] (formerly Kuybyshev), [[Beslan Airport|OGZ]] for [[Vladikavkaz]] (formerly Ordzhonikidze), and [[Migalovo Air Base|KLD]] for [[Tver]] (formerly Kalinin) and others
* In [[South Africa]]: [[Nelspruit Airport|NLP]] for [[Mbombela]] (formerly Nelspruit), [[Chief Dawid Stuurman International Airport|PLZ]] for [[Gqeberha]] (formerly Port Elizabeth), and [[Polokwane International Airport|PTG]] for [[Polokwane]] (formerly Pietersburg)
* In [[South Korea]]: [[Gangneung Air Base|KAG]] for [[Gangneung]] (formerly Kangnung), [[Gimhae International Airport|PUS]] for [[Busan]] (formerly Pusan), and [[Daegu International Airport|TAE]] for [[Daegu]] (formerly Taegu)
* In [[Tajikistan]]: [[Khujand Airport|LBD]] for [[Khujand]] (formerly Leninabad)
* In [[Turkmenistan]]: [[Turkmenbashi International Airport|KRW]] for [[Türkmenbaşy, Turkmenistan|Türkmenbaşy]] (formerly Krasnovodsk), [[Turkmenabat Airport|CRZ]] for [[Türkmenabat]] (formerly Chardzhev), and [[Daşoguz Airport|TAZ]] for [[Daşoguz]] (formerly Tashauz)
* In [[Ukraine]]: [[Kyiv International Airport (Zhuliany)|IEV]] for [[Kyiv]] (formerly Kiev), [[Luhansk International Airport|VSG]] for [[Luhansk]] (formerly Voroshilovgrad), [[Kropyvnytskyi Airport|KGO]] for [[Kropyvnytskyi]] (formerly Kirovograd), [[Lviv Danylo Halytskyi International Airport|LWO]] for [[Lviv, Ukraine|Lviv]] (formerly Lwów while part of Poland until 1939, and still called Lvov in Russian), and [[Ivano-Frankivsk International Airport|IFO]] for [[Ivano-Frankivsk]] (in Soviet times spelt in Russian as Ivano-Frankovsk);
* In [[Vietnam]]: [[Tan Son Nhat International Airport|SGN]] for [[Ho Chi Minh City]] (formerly Saigon)
* In [[Western Sahara]]: [[Dakhla Airport|VIL]] for [[Dakhla, Western Sahara|Dakhla]] (formerly Villa Cisneros)

Some airport codes are based on previous names associated with a present airport, often with a military heritage. These include:
* Chicago's [[O'Hare International Airport|O'Hare]], which is assigned ORD based on its old name of Orchard Field. It was expanded and renamed O'Hare in the mid-1950s.
* [[Rickenbacker International Airport]] uses LCK, for its former name of Lockbourne Air Force Base.
*[[Travis Air Force Base]] uses SUU, for its former name of Fairfield-Suisun Army Air Base.
* [[North Texas Regional Airport]] uses PNX, for its former name of [[Perrin Air Force Station]].
* [[Fresno Yosemite International Airport]] uses the code FAT, derived from a previous name of the airport, Fresno Air Terminal.
* [[Orlando International Airport]] was founded as Orlando Army Air Field #2 but uses MCO for having been renamed [[McCoy Air Force Base]] in 1959 in honor of a wing commander who crashed at the field in 1958.  It was converted in the early 1960s to joint civilian/military use and renamed Orlando Jetport at McCoy, then renamed Orlando International Airport in the early 1980s.
* [[Spokane International Airport]] was so named in 1960 but goes by GEG because it was built on the former Geiger Field, renamed in 1941 for Major [[Harold Geiger]] when the US Army acquired it.
* [[Louis Armstrong New Orleans International Airport]] was originally named Moisant Field after daredevil aviator [[John Moisant]], who died in 1910 in an airplane crash on agricultural land where the airport is now located. Its IATA code MSY was derived from Moisant Stock Yards, as Lakefront Airport retained the code NEW.
* [[Lehigh Valley International Airport]] uses ABE, for its former name of [[Allentown, Pennsylvania|Allentown]]–[[Bethlehem, Pennsylvania|Bethlehem]]–[[Easton, Pennsylvania|Easton]] International Airport.
* [[William R. Fairchild International Airport]] uses CLM, for its former name of Clallam County Municipal Landing Field.
* [[Chicago Executive Airport]] uses PWK, for its former name, Palwaukee Municipal Airport (which was derived from its location on Palatine Road and [[Milwaukee Avenue, Chicago|Milwaukee Avenue]]).
* [[Dallas Executive Airport]] used RBD, for its former name, Redbird Airport.
* [[TSTC Waco Airport]] uses CNW, as it was formerly [[James Connally Air Force Base|Connally Air Force Base]].
* [[Glacier Park International Airport]] uses FCA, for its former name Flathead County Airport.

Some airports are named for an administrative division or nearby city, rather than the one they are located in:
* [[Juan Santamaría International Airport]] is located in [[Alajuela Province|Alajuela province]], but since it is so close to the capital city of [[San José, Costa Rica]], the airport serves the whole [[Costa Rican Central Valley|Central Valley]] using SJO.
* [[Grand Strand Airport]] uses CRE for the former municipality of [[Crescent Beach, South Carolina]].
* [[San Ignacio Town Airstrip]], located in [[San Ignacio, Belize]], uses CYD because it is located in the [[Cayo District]].
* [[Ronald Reagan Washington National Airport]] in [[Crystal City, Virginia]] uses DCA for the [[Washington, D.C.|District of Columbia]] (DC) and Arlington.
* [[Prince Naif bin Abdulaziz International Airport]] in [[Buraidah]], Saudi Arabia uses ELQ for the [[Al-Qassim Province]] (El Qassim)
* [[Damazin Airport]] in Sudan uses RSS, for the nearby [[Roseires Dam]].

Other airport codes are of obscure origin, and each has its own peculiarities:
* Nashville uses [[Nashville Airport|BNA]] for its former name as Berry Field, henceforth '''B'''erry '''N'''ashville '''A'''irport.
* [[Louisville, Kentucky|Louisville]] Muhammad Ali International Airport is [[Louisville International Airport|SDF]] for '''S'''tandifor'''d''' '''F'''ield, its original name (Elisha David Standiford who, as a businessman and legislator, played an important role in Louisville transportation history and owned part of the land on which the airport was built.)<ref>{{Cite web|title=SDF History|url=https://www.flylouisville.com/corporate/sdf-history/|access-date=2020-11-29|website=Louisville Muhammad Ali International Airport|language=en}}</ref>
* [[Knoxville]] uses [[McGhee Tyson Airport|TYS]] for [[Charles McGhee Tyson|Charles McGhee '''Tys'''on]], whose family donated the land for the first airport in Knoxville
* [[Kahului]], the main gateway into [[Maui]], uses [[Kahului Airport|OGG]] in homage to Hawaiian aviation pioneer Bertram J. H'''ogg'''
* [[Gold Coast, Queensland|Gold Coast]], Australia, uses [[Gold Coast Airport|OOL]] due to its former name as C'''ool'''angatta Airport, [[Coolangatta|named after the suburb]] in which it is located
* [[Sunshine Coast, Queensland|Sunshine Coast]], Australia, uses [[Sunshine Coast Airport|MCY]] due to its former names '''M'''aroo'''c'''h'''y'''dore Airport and '''M'''aroo'''c'''h'''y'''dore-Sunshine Coast Airport. It is actually located in [[Marcoola, Queensland|Marcoola]] rather than Maroochydore.
* [[Buli Airport]] uses PGQ, for its location in the [[Pekaulang]] administrative division.{{Citation needed|date=January 2024}}
* [[New River Valley Airport]] uses PSK for its location in [[Pulaski County, Virginia|'''P'''ula'''sk'''i County, Virginia]].<ref>{{Cite web|url=https://www.countyoffice.org/new-river-valley-airport-psk-dublin-va-f09/|title=New River Valley Airport - PSK - Dublin, VA (Address, Phone, and Fax)|website=www.countyoffice.org}}</ref>
* [[Río Amazonas Airport]] uses PTZ for its location in [[Pastaza Province|'''P'''as'''t'''a'''z'''a Province]].<ref>{{Cite web|url=https://dlca.logcluster.org/print-preview/4434|title=Export Preview &#124; Digital Logistics Capacity Assessments|website=dlca.logcluster.org}}</ref>
* [[Brackett Field]] uses POC, as it was named after a flying enthusiast and faculty member of nearby [[Pomona College|'''Po'''mona '''C'''ollege]].<ref>{{cite web|url=https://dpw.lacounty.gov/avi/airports/BrackettField.aspx|title=Brackett Field Airport|website=[[Los Angeles County Department of Public Works]]|access-date=March 16, 2024}}</ref>
* [[Yan'an Nanniwan Airport]] inherited the ENY code from the city of [[Yan'an]]'s old airport, [[Yan'an Ershilipu Airport|'''Y'''a'''n'''<nowiki/>'an '''E'''rshilipu Airport]].
* [[Northwest Florida Beaches International Airport]] uses the code ECP, which when proposed was thought it could stand for "'''E'''veryone '''C'''an '''P'''arty"<ref name="Story of ECP">{{cite web|last1=Owen|first1=Bill|title=Every Airport Code Tells a Story|url=http://www.southwestaircommunity.com/t5/-/-/ba-p/42710|access-date=10 April 2015|website=blogsouthwest.com|date=April 8, 2015 |publisher=Southwest Airlines}}</ref>

In Asia, codes that do not correspond with their city's names include [[Niigata (city)|Niigata]]'s [[Niigata Airport|KIJ]], [[Nanchang]]'s [[Nanchang Airport|KHN]] and [[Pyongyang]]'s [[Pyongyang International Airport|FNJ]].