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

Arrival Airport:

Distance from HYL to SYL:
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- About this route
- HYL Airport Information
- SYL Airport Information
- Facts about HYL
- Facts about SYL
- Map of Nearest Airports to HYL
- List of Nearest Airports to HYL
- Map of Furthest Airports from HYL
- List of Furthest Airports from HYL
- Map of Nearest Airports to SYL
- List of Nearest Airports to SYL
- Map of Furthest Airports from SYL
- List of Furthest Airports from SYL
About this route:
A direct, nonstop flight between Hollis Clark Bay Seaplane Base (HYL), Hollis, Alaska, United States and Roberts Army Heliport (SYL), Camp Roberts, San Luis Obispo County, California, United States would travel a Great Circle distance of 1,471 miles (or 2,367 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 Hollis Clark Bay Seaplane Base and Roberts Army Heliport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | HYL / |
Airport Name: | Hollis Clark Bay Seaplane Base |
Location: | Hollis, Alaska, United States |
GPS Coordinates: | 55°29'26"N by 132°37'24"W |
Area Served: | Hollis, Alaska |
Operator/Owner: | State of Alaska DOT&PF - Southeastern Region |
Airport Type: | Public |
Elevation: | 0 feet (0 meters) |
# of Runways: | 1 |
View all routes: | Routes from HYL |
More Information: | HYL Maps & Info |
Arrival 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 |
Facts about Hollis Clark Bay Seaplane Base (HYL):
- The closest airport to Hollis Clark Bay Seaplane Base (HYL) is Thorne Bay Seaplane Base (KTB), which is located only 14 miles (23 kilometers) NNE of HYL.
- Hollis Clark Bay Seaplane Base is a state owned, public use seaplane base located one nautical mile northeast of the central business district of Hollis, a community in the Prince of Wales-Hyder Census Area in the U.S.
- Hollis Clark Bay Seaplane Base (HYL) currently has only 1 runway.
- Because of Hollis Clark Bay Seaplane Base's relatively low elevation of 0 feet, planes can take off or land at Hollis Clark Bay Seaplane Base 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.
- The furthest airport from Hollis Clark Bay Seaplane Base (HYL) is Port Alfred Airport (AFD), which is located 10,631 miles (17,108 kilometers) away in Port Alfred, South Africa.
Facts about Roberts Army Heliport (SYL):
- 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.
- 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.