Nonstop flight route between Gaithersburg, Maryland, United States and St. Louis, Missouri, United States:
Departure Airport:

Arrival Airport:

Distance from GAI to STL:
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- About this route
- GAI Airport Information
- STL Airport Information
- Facts about GAI
- Facts about STL
- 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 STL
- List of Nearest Airports to STL
- Map of Furthest Airports from STL
- List of Furthest Airports from STL
About this route:
A direct, nonstop flight between Montgomery County Airpark (GAI), Gaithersburg, Maryland, United States and Lambert–St. Louis International Airport (STL), St. Louis, Missouri, United States would travel a Great Circle distance of 709 miles (or 1,141 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 Lambert–St. Louis International 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: | STL / KSTL |
Airport Name: | Lambert–St. Louis International Airport |
Location: | St. Louis, Missouri, United States |
GPS Coordinates: | 38°44'49"N by 90°21'41"W |
Area Served: | Greater St. Louis, Missouri |
Operator/Owner: | City of St. Louis |
Airport Type: | Public |
Elevation: | 605 feet (184 meters) |
# of Runways: | 4 |
View all routes: | Routes from STL |
More Information: | STL 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.
- 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.
- The closest airport to Montgomery County Airpark (GAI) is College Park Airport (CGS), which is located only 18 miles (30 kilometers) SE of GAI.
Facts about Lambert–St. Louis International Airport (STL):
- Lambert again grew in importance for TWA after the airline declared bankruptcy in 1993 and moved its headquarters to St.
- Despite the entry of Southwest Airlines in the market, the TWA buyout of Ozark and subsequent increase in the number of nonstop cities served, the total number of passengers using Lambert held steady from 1985 through 1993, ranging between 19 million and 20 million passengers per year throughout the period.
- The closest airport to Lambert–St. Louis International Airport (STL) is St. Louis Downtown Airport (CPS), which is located only 16 miles (27 kilometers) SE of STL.
- In 2006, the United States Air Force announced plans to turn the 131st Fighter Wing of the Missouri Air National Guard into the 131st Bomb Wing.
- In 1925, the airport became home to Naval Air Station St.
- The airport grew from a balloon launching base, Kinloch Field, part of the 1890s Kinloch Park suburban development.
- In May 2013, Moody's raised its rating on Lambert Airport's bonds to A3-stable outlook from Baa1 with a stable outlook.
- The furthest airport from Lambert–St. Louis International Airport (STL) is Margaret River Airport (MGV), which is located 10,986 miles (17,681 kilometers) away in Margaret River, Western Australia, Australia.
- Because of Lambert–St. Louis International Airport's relatively low elevation of 605 feet, planes can take off or land at Lambert–St. Louis International Airport 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.
- However, TWA faced increasing problems as overall airline demand softened in response to a softening overall economy.
- Lambert–St. Louis International Airport (STL) has 4 runways.