Nonstop flight route between St. Mary's, Alaska, United States and Tegucigalpa, Honduras:
Departure Airport:

Arrival Airport:

Distance from KSM to TGU:
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- About this route
- KSM Airport Information
- TGU Airport Information
- Facts about KSM
- Facts about TGU
- Map of Nearest Airports to KSM
- List of Nearest Airports to KSM
- Map of Furthest Airports from KSM
- List of Furthest Airports from KSM
- Map of Nearest Airports to TGU
- List of Nearest Airports to TGU
- Map of Furthest Airports from TGU
- List of Furthest Airports from TGU
About this route:
A direct, nonstop flight between St. Mary's Airport (KSM), St. Mary's, Alaska, United States and Toncontín International Airport (TGU), Tegucigalpa, Honduras would travel a Great Circle distance of 4,912 miles (or 7,906 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 large distance between St. Mary's Airport and Toncontín International Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between St. Mary's Airport and Toncontín International Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | KSM / PASM |
Airport Name: | St. Mary's Airport |
Location: | St. Mary's, Alaska, United States |
GPS Coordinates: | 62°3'38"N by 163°18'6"W |
Operator/Owner: | Alaska DOT&PF |
Airport Type: | Public |
Elevation: | 312 feet (95 meters) |
# of Runways: | 2 |
View all routes: | Routes from KSM |
More Information: | KSM Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | TGU / MHTG |
Airport Names: |
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Location: | Tegucigalpa, Honduras |
GPS Coordinates: | 14°3'42"N by 87°13'0"W |
Area Served: | Tegucigalpa, Honduras |
Airport Type: | Military/Public |
Elevation: | 3297 feet (1,005 meters) |
# of Runways: | 1 |
View all routes: | Routes from TGU |
More Information: | TGU Maps & Info |
Facts about St. Mary's Airport (KSM):
- Because of St. Mary's Airport's relatively low elevation of 312 feet, planes can take off or land at St. Mary's 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.
- St. Mary's Airport (KSM) has 2 runways.
- The closest airport to St. Mary's Airport (KSM) is Mountain Village Airport (MOU), which is located only 13 miles (20 kilometers) W of KSM.
- The furthest airport from St. Mary's Airport (KSM) is Cape Town International Airport (CPT), which is located 10,494 miles (16,889 kilometers) away in Cape Town, South Africa.
Facts about Toncontín International Airport (TGU):
- On May 30, 2008, the tragedy of TACA Flight 390 prompted the announcement by then Honduran President Manuel Zelaya that all large aircraft operations would move to the Soto Cano Air Base.
- Toncontín International Airport handled 493,000 passengers last year.
- The furthest airport from Toncontín International Airport (TGU) is Cocos (Keeling) Island Airport (CCK), which is nearly antipodal to Toncontín International Airport (meaning Toncontín International Airport is almost on the exact opposite side of the Earth from Cocos (Keeling) Island Airport), and is located 12,135 miles (19,530 kilometers) away in Cocos Islands, Australia.
- The International Civil Aviation Organization completed a review of Toncontín and made safety recommendations regarding the airport.
- The closest airport to Toncontín International Airport (TGU) is Soto Cano Air Base (XPL), which is located 35 miles (56 kilometers) NW of TGU.
- The airport received much notoriety as being one of the most dangerous in the world due to its proximity to mountainous terrain, its short runway, and its historically difficult approach to runway 02.
- In addition to being known as "Toncontín International Airport", another name for TGU is "Aeropuerto Internacional Toncontín".
- Since the 19th century, the plains south of Tegucigalpa became known as the "Potrero Los Llanos", part of a farm adjoining the farm Loarque.
- Toncontín International Airport (TGU) currently has only 1 runway.