What airport is MCI?

Why the code is MCI

Mid-Continent International, the airport's name when the code was assigned in 1972.

The airport authority or a contemporaneous record states this directly.

The airport

IATA code

MCI

ICAO code

KMCI

Airport

Kansas City International Airport

City

Kansas City, United States

Opened

1972

Code origin

Documented

It opened as Mid-Continent International Airport and was renamed Kansas City International within the year, which was too late to matter for the code. The original terminals were three thin arcs designed so a passenger could park within 75 feet of the gate — an idea that stopped working the moment security screening required a single checkpoint, and the whole thing was replaced in 2023.

The other code, KMCI

Every airport has two codes. The three-letter IATA code, MCI, is the one on your boarding pass and your luggage tag, and it is assigned for commercial use. The four-letter ICAO code, KMCI, is the one pilots and controllers use, and it is assigned geographically: the first letter or two identify the region, so every airport in the same part of the world shares a prefix. That is why KMCI looks nothing like MCI.