Nonstop flight route between Camp Roberts, San Luis Obispo County, California, United States and Koyukuk, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from SYL to KYU:
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- About this route
- SYL Airport Information
- KYU Airport Information
- Facts about SYL
- Facts about KYU
- Map of Nearest Airports to SYL
- List of Nearest Airports to SYL
- Map of Furthest Airports from SYL
- List of Furthest Airports from SYL
- Map of Nearest Airports to KYU
- List of Nearest Airports to KYU
- Map of Furthest Airports from KYU
- List of Furthest Airports from KYU
About this route:
A direct, nonstop flight between Roberts Army Heliport (SYL), Camp Roberts, San Luis Obispo County, California, United States and Koyukuk Airport (KYU), Koyukuk, Alaska, United States would travel a Great Circle distance of 2,515 miles (or 4,048 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 Roberts Army Heliport and Koyukuk 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 Roberts Army Heliport and Koyukuk Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | SYL / KSYL |
Airport Name: | Roberts Army Heliport |
Location: | Camp Roberts, San Luis Obispo County, California, United States |
GPS Coordinates: | 35°48'53"N by 120°44'38"W |
Operator/Owner: | United States Army |
Airport Type: | Military |
Elevation: | 630 feet (192 meters) |
View all routes: | Routes from SYL |
More Information: | SYL Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | KYU / PFKU |
Airport Name: | Koyukuk Airport |
Location: | Koyukuk, Alaska, United States |
GPS Coordinates: | 64°52'32"N by 157°43'50"W |
Area Served: | Koyukuk, Alaska |
Operator/Owner: | State of Alaska DOT&PF - Northern Region |
Airport Type: | Public |
Elevation: | 149 feet (45 meters) |
# of Runways: | 1 |
View all routes: | Routes from KYU |
More Information: | KYU Maps & Info |
Facts about Roberts Army Heliport (SYL):
- The furthest airport from Roberts Army Heliport (SYL) is Pierrefonds Airport (ZSE), which is located 11,409 miles (18,361 kilometers) away in Saint-Pierre, Réunion.
- The closest airport to Roberts Army Heliport (SYL) is Paso Robles Municipal AirportEstrella Army Airfield (PRB), which is located only 12 miles (19 kilometers) SE of SYL.
- Because of Roberts Army Heliport's relatively low elevation of 630 feet, planes can take off or land at Roberts Army Heliport 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 Koyukuk Airport (KYU):
- The furthest airport from Koyukuk Airport (KYU) is George Airport (GRJ), which is located 10,304 miles (16,583 kilometers) away in George, South Africa.
- As per Federal Aviation Administration records, this airport had 1,018 passenger boardings in calendar year 2007, a decrease of 22% from the 1,305 enplanements in 2006.
- The closest airport to Koyukuk Airport (KYU) is Nulato Airport (NUL), which is located only 14 miles (23 kilometers) SW of KYU.
- Koyukuk Airport covers an area of 287 acres at an elevation of 149 feet above mean sea level.
- Because of Koyukuk Airport's relatively low elevation of 149 feet, planes can take off or land at Koyukuk 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.
- Koyukuk Airport (KYU) currently has only 1 runway.