Nonstop flight route between Gaithersburg, Maryland, United States and St. Marys, Pennsylvania, United States:
Departure Airport:

Arrival Airport:

Distance from GAI to STQ:
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- About this route
- GAI Airport Information
- STQ Airport Information
- Facts about GAI
- Facts about STQ
- Map of Nearest Airports to GAI
- List of Nearest Airports to GAI
- Map of Furthest Airports from GAI
- List of Furthest Airports from GAI
- Map of Nearest Airports to STQ
- List of Nearest Airports to STQ
- Map of Furthest Airports from STQ
- List of Furthest Airports from STQ
About this route:
A direct, nonstop flight between Montgomery County Airpark (GAI), Gaithersburg, Maryland, United States and St. Marys Municipal Airport (STQ), St. Marys, Pennsylvania, United States would travel a Great Circle distance of 170 miles (or 274 kilometers).
A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the relatively short distance between Montgomery County Airpark and St. Marys Municipal Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | GAI / KGAI |
Airport Name: | Montgomery County Airpark |
Location: | Gaithersburg, Maryland, United States |
GPS Coordinates: | 39°10'5"N by 77°9'57"W |
Operator/Owner: | Montgomery County Revenue Authority |
Airport Type: | Public |
Elevation: | 539 feet (164 meters) |
# of Runways: | 1 |
View all routes: | Routes from GAI |
More Information: | GAI Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | STQ / KOYM |
Airport Names: |
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Location: | St. Marys, Pennsylvania, United States |
GPS Coordinates: | 41°24'45"N by 78°30'8"W |
Area Served: | St. Marys, Pennsylvania |
Operator/Owner: | City of St. Marys |
Airport Type: | Public |
Elevation: | 1934 feet (589 meters) |
# of Runways: | 1 |
View all routes: | Routes from STQ |
More Information: | STQ Maps & Info |
Facts about Montgomery County Airpark (GAI):
- Because of Montgomery County Airpark's relatively low elevation of 539 feet, planes can take off or land at Montgomery County Airpark at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- The furthest airport from Montgomery County Airpark (GAI) is Margaret River Airport (MGV), which is located 11,667 miles (18,776 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to Montgomery County Airpark (GAI) is College Park Airport (CGS), which is located only 18 miles (30 kilometers) SE of GAI.
- Montgomery County Airpark (GAI) currently has only 1 runway.
Facts about St. Marys Municipal Airport (STQ):
- St. Marys Municipal Airport (STQ) currently has only 1 runway.
- In addition to being known as "St. Marys Municipal Airport", another name for STQ is "OYM".
- The closest airport to St. Marys Municipal Airport (STQ) is DuBois Regional Airport (DUJ), which is located 26 miles (42 kilometers) SW of STQ.
- The airport opened on June 30, 1950 with a 3,700' x 75' runway.
- The airport covers 283 acres.
- The furthest airport from St. Marys Municipal Airport (STQ) is Margaret River Airport (MGV), which is located 11,533 miles (18,560 kilometers) away in Margaret River, Western Australia, Australia.