The Interesting History of IATA Codes - Who Knew?

Look at your luggage tag or air waybill and you'llIndianola, MS and have a really old pilot, you might
see airport codes instead of origin and destinationwant to make sure he doesn't head for New
city names spelled out. IATA (International AirYork seeing how Indianola took over Idlewild's
Transport Association) assigns a three-letterdiscarded IDL.
identifier code to every commercial airport in theAn IATA code that starts with Y probably means
world. (By the way, pronounce it "Eye-ah-ta,") It'syour freight is probably headed for Canada.
no mystery how IATA came up with BOS forLiterally hundreds of Canadian airport codes begin
Boston or STL for St. Louis. But why the heck didwith Y.
it assign MCI to Kansas City, IAD to WashingtonWho wants to be FAT? Fresno Air Terminal
Dulles or EWR to Newark?doesn't mind. How do they get CMH out of
Turns out there was method to the madness.Columbus? From Columbus Municipal Hangar.
When they started assigning IATA codes, certainPuzzled on CVG being Cincinnati? Cincinnati's
prefixes were set aside. The Navy grabbed theairport actually sits across the Ohio River in
"N" prefixes. Navy pilots train at NPA (NavyCovington, KY.
Pensacola), for instance. Take away the "N" fromFile MCI for Kansas City under "too late now."
Newark and EWR makes sense. Nacogdoches,Because of the initial letter K restrictions, the
TX? OCH.original Kansas City airport was MKC (Missouri
With few exceptions, prefixes beginning with "W"Kansas City). When they started planning a big
or "K" are generally not used for USA airportsnew airport someone decided that Mid-Continent
lest they be confused with radio station callInternational sounded pretty darned fancy and got
letters. So before Washington Dulles opened theythe MCI designation. Before the airport opened,
were leaning toward DIA (Dulles Internationallocal politicians decided to change the name to
Airport) but then realized that it might be tooKansas City International so that travelers would
easily confused with nearby Reagan (DCA-Districtrecognize their fair city. Meantime, it was too late
of Columbia Airport), especially when harriedto change the MCI code.
freight clerks were scribbling chalk letters onOkay, I've kept you in suspense long enough.
baggage carts. Stick the D at the end andYou're wondering about ORD for Chicago O'Hare,
International Airport Dulles doesn't seem so crazy.aren't you? Midway (MDW), its cross town rival,
Long before the Wright Brothers, the Nationalwas bursting at the seams as the world's busiest
Weather Service dotted stations around theairport in the early days of commercial jets.
country with two letter city codes. Later, IATAOfficials decided to build a huge new airport
adopted some of those by simply adding an X.northwest of town where a tiny airstrip that had
That's why we might ship from Portland, ORbeen renamed for heroic Navy pilot, Lt. Cmdr.
(PDX) to Los Angeles (LAX).Butch O'Hare. As MCI will vouch, once you get an
JFK Airport is a rarity in that it changed IATAIATA code it's almost impossible to change it.
code from IDL when it changed its name fromWhat was the name of the little strip before they
Idlewild. Usually once a code is assigned, it stayschanged it to O'Hare? Orchard Field-ORD.
assigned. So if you hop on board a flight to