Nonstop flight route between Gaithersburg, Maryland, United States and San Diego / El Cajon, California, United States:
Departure Airport:

Arrival Airport:

Distance from GAI to SEE:
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- About this route
- GAI Airport Information
- SEE Airport Information
- Facts about GAI
- Facts about SEE
- 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 SEE
- List of Nearest Airports to SEE
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- List of Furthest Airports from SEE
About this route:
A direct, nonstop flight between Montgomery County Airpark (GAI), Gaithersburg, Maryland, United States and Gillespie Field (SEE), San Diego / El Cajon, California, United States would travel a Great Circle distance of 2,249 miles (or 3,620 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 Gillespie Field, 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: | SEE / KSEE |
Airport Name: | Gillespie Field |
Location: | San Diego / El Cajon, California, United States |
GPS Coordinates: | 32°49'33"N by 116°58'20"W |
Area Served: | San Diego, California |
Operator/Owner: | County of San Diego |
Airport Type: | Public |
Elevation: | 388 feet (118 meters) |
# of Runways: | 3 |
View all routes: | Routes from SEE |
More Information: | SEE 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 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.
- 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.
Facts about Gillespie Field (SEE):
- The FAA says in 2010 Gillespie Field was the 44th busiest airport in the United States.
- Because of Gillespie Field's relatively low elevation of 388 feet, planes can take off or land at Gillespie Field 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.
- In 1946 the airfield was turned over to San Diego County and became a general aviation facility.
- In 1942 the United States Marine Corps chose a 688-acre site east of San Diego for parachute training for the newly forming Parachute battalions.
- Gillespie Field (SEE) has 3 runways.
- The closest airport to Gillespie Field (SEE) is Montgomery Field (MYF), which is located only 10 miles (16 kilometers) W of SEE.
- The furthest airport from Gillespie Field (SEE) is Sir Gaëtan Duval Airport (RRG), which is located 11,534 miles (18,562 kilometers) away in Rodrigues Island, Mauritius.