Why don’t airport codes make sense all the time? This is because often they refer to an old former name of that airport. As the airline industry grew and changed, many more airport codes worldwide were being added to the list. The 3 letter code must be an original with no duplicates or people would be traveling to places they really didn’t want to travel to for their trip.
Such as when you are going to Chicago, are you traveling to Midway Airport or O’Hare Airport? The code CHI is used when travel industry people are looking into information about both airports, not just one. Chicago Airport ORD used to have another name before it grew into the large international airport it is now. Chicago O’Hare Airport used to be Orchard Field, so the code ORD came from OrchaRD.
DCA used to be District of Columbia Airport, hence DCA but now it is Reagan International Airport, before that it was National Airport. With all it’s name changes the airport code has stayed the same DCA.
So where are you traveling off to next? LGA? PHX? LAX? SJU? LON?
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