Airport IATA/ ICAO Codes

[redlegsfan21]

@damiross

@mduell

The FAA data has ICAO codes and FAA LIDs, but not IATA codes.

I understand that and was going to mention it in my original posting.

The three letter FAA codes are also IATA codes, as far as I can tell. However, FAA codes that consist of numbers and letter(s) are not IATA codes. Furthermore, with the exception of Hawaii, Alaska, and outlaying USA territories (e.g. Guam, Virgin Islands), the ICAO code for USA airports using 3 letter codes are made by adding a “K” to the start of the 3 letters.

Please let me know if I got something wrong there. Thanks.

But not every FAA code is the same as it’s IATA counterpart. Ex: Carlsbad, CA (FAA: CRQ, IATA: CLD), St. Augustine, FL (FAA: SGJ, IATA: UST), Marquette, MI (FAA: SAW, IATA: MQT), Boulder City (FAA: BVU, IATA: BLD).

Also Alaskan airports just drop the third letter of the FAA code and add a PA in front unless the FAA code begins with an A which then just a P is added. Hawaii is the same way with PH and H. At least, that is the normal (always an exception to the rule). Sometimes, the second FAA letter will be dropped and the third letter will make up the fourth ICAO letter but all domestic ICAO codes are made up from the FAA code.