Nonstop flight route between St. Mary's, Alaska, United States and Buffalo, New York, United States:
Departure Airport:

Arrival Airport:

Distance from KSM to BUF:
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- About this route
- KSM Airport Information
- BUF Airport Information
- Facts about KSM
- Facts about BUF
- 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 BUF
- List of Nearest Airports to BUF
- Map of Furthest Airports from BUF
- List of Furthest Airports from BUF
About this route:
A direct, nonstop flight between St. Mary's Airport (KSM), St. Mary's, Alaska, United States and Buffalo Niagara International Airport (BUF), Buffalo, New York, United States would travel a Great Circle distance of 3,498 miles (or 5,630 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 Buffalo Niagara 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 Buffalo Niagara 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: | BUF / KBUF |
Airport Name: | Buffalo Niagara International Airport |
Location: | Buffalo, New York, United States |
GPS Coordinates: | 42°56'26"N by 78°43'55"W |
Area Served: | Erie County |
Airport Type: | Public |
Elevation: | 728 feet (222 meters) |
# of Runways: | 2 |
View all routes: | Routes from BUF |
More Information: | BUF Maps & Info |
Facts about St. Mary's Airport (KSM):
- St. Mary's Airport (KSM) has 2 runways.
- 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.
- 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.
- 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.
Facts about Buffalo Niagara International Airport (BUF):
- The only shop is Everything ASAP, though they have 2 locations, one near security and one near the far end of the terminal near gate 20.
- In 1986–1987, most of the US airline industry consolidated through a series of buyouts and mergers.
- Prior Aviation provides private charter flights and other services including fueling and ground handling to many of the scheduled airlines that operate from the Buffalo-Niagara International Airport.
- The closest airport to Buffalo Niagara International Airport (BUF) is Niagara Falls International Airport (IAG), which is located only 16 miles (25 kilometers) NW of BUF.
- Despite the addition of the West Terminal, the original terminal, the "East Terminal", received one more expansion in 1977.
- The furthest airport from Buffalo Niagara International Airport (BUF) is Margaret River Airport (MGV), which is located 11,465 miles (18,452 kilometers) away in Margaret River, Western Australia, Australia.
- Buffalo Niagara International Airport handled 5,118,000 passengers last year.
- Southwest Airlines, which recently merged and absorbed AirTran Airways into its system, remains the busiest airline at Buffalo Niagara International Airport, handling 32 percent of the outbound flights.
- Buffalo Niagara International Airport (BUF) has 2 runways.
- Because of Buffalo Niagara International Airport's relatively low elevation of 728 feet, planes can take off or land at Buffalo Niagara 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.
- Currently, there are 10 restaurants in the Buffalo-Niagara International Airport plus vending machines.