Nonstop flight route between Mokuleia, Hawaii, United States and Montague, California, United States:
Departure Airport:

Arrival Airport:

Distance from HDH to SIY:
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- About this route
- HDH Airport Information
- SIY Airport Information
- Facts about HDH
- Facts about SIY
- Map of Nearest Airports to HDH
- List of Nearest Airports to HDH
- Map of Furthest Airports from HDH
- List of Furthest Airports from HDH
- Map of Nearest Airports to SIY
- List of Nearest Airports to SIY
- Map of Furthest Airports from SIY
- List of Furthest Airports from SIY
About this route:
A direct, nonstop flight between Dillingham Airfield (HDH), Mokuleia, Hawaii, United States and Siskiyou County Airport (SIY), Montague, California, United States would travel a Great Circle distance of 2,494 miles (or 4,014 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 Dillingham Airfield and Siskiyou County Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | HDH / PHDH |
Airport Name: | Dillingham Airfield |
Location: | Mokuleia, Hawaii, United States |
GPS Coordinates: | 21°34'45"N by 158°11'49"W |
Operator/Owner: | U.S. Army |
Airport Type: | Public / Military |
Elevation: | 14 feet (4 meters) |
# of Runways: | 1 |
View all routes: | Routes from HDH |
More Information: | HDH Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | SIY / KSIY |
Airport Names: |
|
Location: | Montague, California, United States |
GPS Coordinates: | 41°46'53"N by 122°28'5"W |
Operator/Owner: | Siskiyou County |
Airport Type: | Public |
Elevation: | 2648 feet (807 meters) |
# of Runways: | 1 |
View all routes: | Routes from SIY |
More Information: | SIY Maps & Info |
Facts about Dillingham Airfield (HDH):
- The closest airport to Dillingham Airfield (HDH) is Wheeler AAF (HHI), which is located only 12 miles (19 kilometers) ESE of HDH.
- Because of Dillingham Airfield's relatively low elevation of 14 feet, planes can take off or land at Dillingham Airfield 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.
- Dillingham Airfield is part of a centralized state structure governing all of the airports and seaports of Hawaii.
- The furthest airport from Dillingham Airfield (HDH) is Ghanzi Airport (GNZ), which is nearly antipodal to Dillingham Airfield (meaning Dillingham Airfield is almost on the exact opposite side of the Earth from Ghanzi Airport), and is located 12,425 miles (19,995 kilometers) away in Ghanzi, Botswana.
- The runway was paved, extended to 9,000 feet long, and a crosswind runway added from 1942-1945.
- Dillingham Airfield (HDH) currently has only 1 runway.
Facts about Siskiyou County Airport (SIY):
- The furthest airport from Siskiyou County Airport (SIY) is Tôlanaro Airport (FTU), which is located 11,131 miles (17,914 kilometers) away in Tôlanaro, Madagascar.
- The closest airport to Siskiyou County Airport (SIY) is Montague Airport-Yreka Rohrer Field (RKC), which is located only 5 miles (9 kilometers) SW of SIY.
- Siskiyou County Airport (SIY) currently has only 1 runway.
- The United States Army Air Forces first leased the Siskiyou County Airport on 18 November 1942.
- On 13 September 1962 representatives from the United States Air Force Air Defense Command met with the Siskiyou County, Board of Supervisors.
- In addition to being known as "Siskiyou County Airport", other names for SIY include "Siskiyou County Air Force Auxiliary Airfield" and "Siskiyou County Army Air Field".