CHI City Code: Chicago IATA Airports
CHI identifies the city of Chicago, United States, in IATA coding. Airport codes in this dataset for that city: ORD, MDW. A city code is not always the same as an airport code.
Overview
CHI is the IATA city code stored for Chicago, United States (US). City codes group one or more airports. CHI is a metro code covering ORD, MDW. That is different from using a single airport as if it were the city. Airport names stored: ORD O'Hare International Airport; MDW Chicago Midway International Airport. GDS availability and some pricing entries use the city code when the traveller can use any airport in the metro. Ticketed segments still print a specific airport such as JFK rather than NYC. This page does not list every airfield in the metropolitan area, only rows in the catalog. Timezone and ICAO live on each airport page.
How to use this page
- Search CHI or Chicago in the city code finder.
- Open each airport page for ICAO and timezone.
- Parse the actual PNR to see which airport was ticketed.
Example
Example: a client says they fly into CHI. Ask which airport: ORD, MDW. A PNR segment will show one of those airport codes, not always CHI.
FAQs
What is the CHI city code?
CHI is stored as the IATA city code for Chicago, United States.
Is CHI an airport?
No. CHI is the city. Airports in this dataset: ORD, MDW.
Which airports are in Chicago?
Stored airports: ORD, MDW. Others are unavailable in this dataset.
How is CHI used in a GDS?
City codes appear in some availability and pricing entries. Ticketed segments use a specific airport code.
Is CHI the same as NYC-style metro codes?
Yes, CHI groups multiple airports like other metro codes.
What country is CHI?
United States (US).
Can I convert a PNR that uses this city?
Yes. Paste the itinerary into the PNR parser. The ticketed airport codes on segments are what get parsed.
Are these all airports in the city?
No. Only airports present in this product dataset are listed.
How do I open CHI airport pages?
Use the airport links for ORD, MDW.
Where is the timezone?
On each airport page (IANA zone), not on the city code itself.
Do you invent missing city codes?
No. Unknown codes are marked unavailable.
When was this updated?
Content follows the stored city/airport catalog. Template date 17 Aug 2026.