AirportLookupSim Database

Reference only — not for real-world navigation.

KGYY

Gary Chicago International Airport · Gary

Key Facts

Essential technical summary for MSFS 2020/2024 and X-Plane.

ILS Approach StatusILS FREQUENCIES VERIFIED ✅

Field Elevation

591 ft / 180 m

Transition Altitude

18,000 ft

Primary Channel

TWR 125.60 MHz (TWR)

Live Conversion

inHg

hPa

Details Runways Frequencies Navaids Nearby

Runway Summary (Quick-Links)

12/30 · 7,003 ft · AsphaltLIGHTED 02/20 · 3,603 ft · AsphaltLIGHTED

Flight Planning

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Welcome to the technical flight briefing for Gary Chicago International Airport (KGYY), located in Gary, United States. As a vital hub for Microsoft Flight Simulator 2024, MSFS 2020, and X-Plane pilots, this facility features 2 active runways with a maximum elevation of 591 ft. Instrument approaches (IFR) are supported with verified ILS frequencies and identifiers for precision landings.Reference the data below for primary communication channels and detailed runway characteristics. Pilots should observe a Transition Altitude of 18,000 ft verified for this field for altimeter reset procedures.

Airport Details

Full geographical and organizational metadata.

Full Name

Gary Chicago International Airport

ICAO / IATA

KGYY / GYY

Municipality

Gary

Country

US — United States

Region

US-IN — Indiana

GPS Coordinates

📍 41.616299, -87.412804 🗺️

Transition Altitude

18,000 ft

Elevation

591 ft

Wikipedia

Pilot Toolbox

External charts, live tracking and weather reports.

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Runways & ILS Approach Data

Detailed dimensions and instrument landing frequencies.

Runway 12 / 30

ILS EQUIPPEDLIGHTED

Runway Length: 7,003 ft / 2,135 m
Runway Width: 150 ft / 46 m
Surface Type: Asphalt
Heading: 124.1° / 304.1°

RWY 12 (124.1°)

No ILS / Visual Only

RWY 30 (304.1°)

108.75 MHz

IDENT: GYY | CRS: 306°

Runway 02 / 20

LIGHTED

Runway Length: 3,603 ft / 1,098 m
Runway Width: 100 ft / 30 m
Surface Type: Asphalt
Heading: 21.2° / 201.2°

RWY 02 (21.2°)

No ILS / Visual Only

RWY 20 (201.2°)

No ILS / Visual Only

Nearby Navaids

Ground-based navigation aids (VOR, NDB, DME) in the vicinity or associated with this airport.

CGT · VORTAC (Chicago Heights)114,200 kHz

41.509998, -87.571503 · 630 ft

HK · NDB (Ermin)332 kHz

41.719002, -87.836403 · 691 ft

MX · NDB (Kedzi)248 kHz

41.741501, -87.689697 · 624 ft

GY · NDB (Garie)236 kHz

41.572399, -87.327003 · 587 ft

Communication Frequencies

Air traffic control and advisory channels.

A/D CHICAGO APP/DEP

133.10 MHz

ATIS ATIS

120.63 MHz

CTAF CTAF

125.60 MHz

GND GND

121.90 MHz

RCO KANKAKEE RDO

114.20 MHz

RDO TERRE HAUTE RDO

123.65 MHz

TWR TWR

125.60 MHz

Nearby Airports

Alternative airports in the vicinity (km & nm).

Chicago Midway International Airport

Porter County Municipal Airport

Chicago O'Hare International Airport

Chicago Executive Airport

Greater Kankakee Airport

Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: FAA NASR · Cycle: Jan 2026