Nonstop flight route between St. Mary's, Alaska, United States and San Sebastián, Spain:
Departure Airport:

Arrival Airport:

Distance from KSM to EAS:
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- About this route
- KSM Airport Information
- EAS Airport Information
- Facts about KSM
- Facts about EAS
- 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 EAS
- List of Nearest Airports to EAS
- Map of Furthest Airports from EAS
- List of Furthest Airports from EAS
About this route:
A direct, nonstop flight between St. Mary's Airport (KSM), St. Mary's, Alaska, United States and San Sebastián Airport (EAS), San Sebastián, Spain would travel a Great Circle distance of 5,081 miles (or 8,177 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 San Sebastián 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 San Sebastián 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: | EAS / LESO |
Airport Name: | San Sebastián Airport |
Location: | San Sebastián, Spain |
GPS Coordinates: | 43°21'23"N by 1°47'26"W |
Area Served: | San Sebastián |
Operator/Owner: | Aena |
Airport Type: | Public |
Elevation: | 15 feet (5 meters) |
# of Runways: | 1 |
View all routes: | Routes from EAS |
More Information: | EAS 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 San Sebastián Airport (EAS):
- The furthest airport from San Sebastián Airport (EAS) is Hood Aerodrome (MRO), which is nearly antipodal to San Sebastián Airport (meaning San Sebastián Airport is almost on the exact opposite side of the Earth from Hood Aerodrome), and is located 12,226 miles (19,676 kilometers) away in Masterton, New Zealand.
- San Sebastián Airport (EAS) currently has only 1 runway.
- The closest airport to San Sebastián Airport (EAS) is Biarritz – Anglet – Bayonne Airport (BIQ), which is located only 15 miles (25 kilometers) ENE of EAS.
- Because of San Sebastián Airport's relatively low elevation of 15 feet, planes can take off or land at San Sebastián 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.