MDW City Code: Chicago IATA Airports
MDW identifies the city of Chicago, United States, in IATA coding. Airport codes in this dataset for that city: MDW. A city code is not always the same as an airport code.
Overview
MDW is the IATA city code stored for Chicago, United States (US). City codes group one or more airports. In this dataset MDW is aligned with airport MDW. Some cities share the airport code; others (NYC, LON, TYO) do not. Airport names stored: 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 MDW 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 PNR city pair may use MDW as the airport. If a host screen shows city MDW, confirm it matches this metro before quoting.
FAQs
What is the MDW city code?
MDW is stored as the IATA city code for Chicago, United States.
Is MDW an airport?
In this dataset MDW is also used with airport MDW.
Which airports are in Chicago?
Stored airports: MDW. Others are unavailable in this dataset.
How is MDW used in a GDS?
City codes appear in some availability and pricing entries. Ticketed segments use a specific airport code.
Is MDW the same as NYC-style metro codes?
Here MDW matches a single stored airport. Metro codes such as NYC still differ from JFK.
What country is MDW?
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 MDW airport pages?
Use the airport links for 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.