Airports / Maryland / GAI
Montgomery County Airpark.
Gaithersburg, Maryland · 539 ft elevation. 1 charter operator based here.
4.2/5
Google rating
73 ratings
1
Operators based
539
Elevation ft
Google rating
Google reviews
Based operators
FBOs on field
Field elevation
Field standing
19 nm
To the nearest alternate
Washington Dulles International Airport (IAD), 6 fields within 50 nm.
Overview
Located in Gaithersburg, Maryland, Montgomery County Airpark (KGAI / GAI) operates as a general aviation field. The airport sits 539 feet above sea level. With no scheduled airline service, it caters to private, charter, and general aviation traffic.
The airport anchors local charter capacity, OpenAir is based here. When weather or ramp space demands it, nearby options are Washington Dulles International Airport (IAD, 19 nm), Fort Meade Executive Airport (FME, 20 nm), and Ronald Reagan Washington National Airport (DCA, 20 nm). With a single 4,202-foot paved runway, GAI can typically accommodate aircraft as large as light jets.
Planning a trip? The Washington DC, VA destination guide covers routes, aircraft options, and what to expect on the ground. Compare rated operators or run a route through the cost estimator to gauge pricing from Gaithersburg.
1 FBO serves KGAI. Run one? Become the preferred FBO
Ramp services
FBOs on the field
DC Metro Aviation Services
Your FBO? Claim it, free- Fuel
- Hangar
- Line 7:00am-8:00pm daily; Office 8:00am-8:00pm; 24 hours 7 days with PPR for after-hours
- Unicom 123.075
- Conference room
- Wi-Fi
- Courtesy car
- Car rental
- Hangar
- Maintenance
- Parking
- Fuel
- +4 more
- Phone
- Website
- Address
Directory data, unpaid. FBOs can take the Preferred slot above.
Field capability
ICAO
KGAI
IATA
GAI
FAA / Local
GAI
Elevation
539 ft
Coordinates
39.1683° N · 77.1660° W
Airspace
G · GolfClass G, GolfUncontrolled field, no tower. Pilots self-announce and sequence themselves on the common traffic advisory frequency.Source: FAA NASR class airspace
Size
Small
Scheduled svc
No
Elevation vs MD fields
state range 11–2,933 ft
At 539 ft, GAI sits higher than 83% of the 18 Maryland fields on the register.
Runways & aircraft access
1 runway
longest 4,202 ft
- 14/324,202 ft × 75 ftAsphaltLighted
Which aircraft can operate here
vs longest paved runway 4,202 ft
GAI's 4,202 ft paved runway typically supports charter aircraft up to light jets.
- Turboprop3,000 ft
- Light Jet3,500 ft
- Midsize Jet4,500 ft
- Super-Midsize Jet5,000 ft
- Heavy Jet5,500 ft
- VIP Airliner6,000 ft
Class minimums are sea-level planning rules of thumb. A specific aircraft's balanced-field length varies with weight, temperature, and field elevation. Confirm performance with the operator.
Based charter operators1
Access & alternates
Closest alternate fields by great-circle distance, every listing links to its own field brief.
- 19nmIADWashington Dulles International AirportDulles
- 20nmFMEFort Meade Executive AirportFort Meade(Odenton)
- 20nmDCARonald Reagan Washington National AirportWashington
- 23nmBWIBaltimore/Washington International Thurgood Marshall AirportBaltimore
- 26nmADWJoint Base AndrewsCamp Springs
- 27nmDAADavison Army Air FieldFort Belvoir
Destinations served
Location
Open the full mapKGAI · Montgomery County Airpark · Gaithersburg, MD
From the ramp
Google Places photography of Montgomery County Airpark, tap any frame to view full-screen, then cycle with the arrows or your keyboard.
Flight times from here
Approximate nonstop block times from GAI on a typical midsize charter jet. Faster classes trim these; add positioning and taxi for the real schedule.
| Destination | Distance | Block time |
|---|---|---|
| New York (TEB) | 175 nm | 48m |
| Boston (BED) | 332 nm | 1h 10m |
| Nashville (BNA) | 487 nm | 1h 32m |
| Chicago (ORD) | 518 nm | 1h 36m |
| Palm Beach (PBI) | 764 nm | 2h 11m |
| Miami (MIA) | 818 nm | 2h 18m |
| Dallas (DAL) | 1,026 nm | 2h 47m |
| Houston (HOU) | 1,061 nm | 2h 52m |
Common questions
- What size private jets can use GAI?
- Montgomery County Airpark's longest paved runway is 4,202 ft, which typically supports charter aircraft up to light jets. Lighter classes (turboprops, light and midsize jets) operate comfortably; confirm exact performance for a specific tail with the operator, since balanced-field length shifts with weight, temperature, and elevation.
- What is the longest runway at GAI?
- Montgomery County Airpark has one runway; the longest measures 4,202 ft on a paved surface and is lit for night operations.
- Are there charter operators based at GAI?
- Yes. 1 charter operator list Montgomery County Airpark as a home base, including OpenAir. You can also request quotes from operators that reposition aircraft into the field.
- Which FBOs are at Montgomery County Airpark?
- One FBO serves GAI: DC Metro Aviation Services. Phone, website, hours, unicom and services for each are listed on this page. Call ahead for fuel, ramp space, and ground handling.
- What is the nearest major airport to GAI?
- The closest alternate is Washington Dulles International Airport (IAD), about 19 nm away, followed by Fort Meade Executive Airport (FME) at 20 nm. Operators often position aircraft between these fields depending on ramp space and availability.
- How long is a flight from GAI to major cities?
- Typical block times on a midsize jet: Boston about 1h 10m (332 nm), Nashville about 1h 32m (487 nm), Chicago about 1h 36m (518 nm). Faster classes trim these times; add positioning and taxi for the real schedule.