Nonstop flight route between Okushiri, Okushiri Island, Hokkaido, Japan and Diomede, Alaska, United States:
Departure Airport:
 
    Arrival Airport:
 
    Distance from OIR to DIO:
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- About this route
- OIR Airport Information
- DIO Airport Information
- Facts about OIR
- Facts about DIO
- Map of Nearest Airports to OIR
- List of Nearest Airports to OIR
- Map of Furthest Airports from OIR
- List of Furthest Airports from OIR
- Map of Nearest Airports to DIO
- List of Nearest Airports to DIO
- Map of Furthest Airports from DIO
- List of Furthest Airports from DIO
About this route:
A direct, nonstop flight between Okushiri Airport (OIR), Okushiri, Okushiri Island, Hokkaido, Japan and Diomede Heliport (FAA: DM2) (DIO), Diomede, Alaska, United States would travel a Great Circle distance of 2,546 miles (or 4,097 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 Okushiri Airport and Diomede Heliport (FAA: DM2), 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 Okushiri Airport and Diomede Heliport (FAA: DM2). You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | OIR / RJEO | 
| Airport Names: | 
 | 
| Location: | Okushiri, Okushiri Island, Hokkaido, Japan | 
| GPS Coordinates: | 42°4'18"N by 139°25'58"E | 
| Operator/Owner: | Hokkaidō Prefecture | 
| Airport Type: | Public | 
| Elevation: | 161 feet (49 meters) | 
| # of Runways: | 1 | 
| View all routes: | Routes from OIR | 
| More Information: | OIR Maps & Info | 
Arrival Airport Information:
| IATA / ICAO Codes: | DIO / | 
| Airport Name: | Diomede Heliport (FAA: DM2) | 
| Location: | Diomede, Alaska, United States | 
| GPS Coordinates: | 65°45'29"N by 168°57'6"W | 
| Elevation: | 0 feet (0 meters) | 
| View all routes: | Routes from DIO | 
| More Information: | DIO Maps & Info | 
Facts about Okushiri Airport (OIR):
- Okushiri Airport (OIR) currently has only 1 runway.
- The closest airport to Okushiri Airport (OIR) is Hakodate Airport (HKD), which is located 74 miles (120 kilometers) ESE of OIR.
- Because of Okushiri Airport's relatively low elevation of 161 feet, planes can take off or land at Okushiri 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.
- The furthest airport from Okushiri Airport (OIR) is Capitán de Corbeta Carlos A. Curbelo International Airport (PDP), which is located 11,508 miles (18,520 kilometers) away in Maldonado/Punta del Este, Maldonado, Uruguay.
- In addition to being known as "Okushiri Airport", other names for OIR include "奥尻空港" and "Okushiri Kūkō".
Facts about Diomede Heliport (FAA: DM2) (DIO):
- There is no hospital on the island and emergency services are limited due to the remoteness of the island.
- During the centuries, the village on Little Diomede was gradually inhabited as a permanent settlement and the entire island was incorporated into the city of Diomede in 1970.
- The closest airport to Diomede Heliport (FAA: DM2) (DIO) is Wales Airport (WAA), which is located 26 miles (42 kilometers) ESE of DIO.
- Because of Diomede Heliport (FAA: DM2)'s relatively low elevation of 0 feet, planes can take off or land at Diomede Heliport (FAA: DM2) 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 first square building in the island was a small Catholic church, which was planned by Father Bellarmine Lafortune in 1935 and built by Father Thomas Cunningham during his residency in the island between 1936 and 1947.
- According to Arthur Ahkinga, who lived on Little Diomede island at the turn of the 1940s, the Iñupiat on the island made their living by hunting and carving ivory which they traded or sold.
- The furthest airport from Diomede Heliport (FAA: DM2) (DIO) is Teniente Rodolfo Marsh Airport (TNM), which is located 10,411 miles (16,755 kilometers) away in Villa Las Estrellas, Antarctica.




