Nonstop flight route between Diomede, Alaska, United States and Cotonou, Benin:
Departure Airport:

Arrival Airport:

Distance from DIO to COO:
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- About this route
- DIO Airport Information
- COO Airport Information
- Facts about DIO
- Facts about COO
- Map of Nearest Airports to DIO
- List of Nearest Airports to DIO
- Map of Furthest Airports from DIO
- List of Furthest Airports from DIO
- Map of Nearest Airports to COO
- List of Nearest Airports to COO
- Map of Furthest Airports from COO
- List of Furthest Airports from COO
About this route:
A direct, nonstop flight between Diomede Heliport (FAA: DM2) (DIO), Diomede, Alaska, United States and Cotonou Cadjehoun Airport (COO), Cotonou, Benin would travel a Great Circle distance of 7,435 miles (or 11,965 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 Diomede Heliport (FAA: DM2) and Cotonou Cadjehoun 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 Diomede Heliport (FAA: DM2) and Cotonou Cadjehoun Airport. You'll see that it will travel the same route of the red line on this map!
Departure 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 |
Arrival Airport Information:
IATA / ICAO Codes: | COO / DBBB |
Airport Name: | Cotonou Cadjehoun Airport |
Location: | Cotonou, Benin |
GPS Coordinates: | 6°21'20"N by 2°23'5"E |
Area Served: | Cotonou |
Elevation: | 19 feet (6 meters) |
# of Runways: | 1 |
View all routes: | Routes from COO |
More Information: | COO Maps & Info |
Facts about Diomede Heliport (FAA: DM2) (DIO):
- 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.
- During the Nome gold rush at the turn of the 19th century, Diomede villagers traveled to Nome along with the gold seekers, even though Nome was not a native village.
- 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 island's only school, and likely the most isolated school in the United States, the Diomede School has grades from Pre-K through 12 and approximately 40 students and 5 teachers.
- There were 43 households out of which 37.2% had children under the age of 18 living with them, 20.9% were married couples living together, 32.6% had a female householder with no husband present, and 27.9% were non-families.
- 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 closest airport to Diomede Heliport (FAA: DM2) (DIO) is Wales Airport (WAA), which is located 26 miles (42 kilometers) ESE of DIO.
- The first non-native to reach the Diomede Islands was a Russian explorer Semyon Dezhnev in 1648.
- Water for winter use is drawn from a mountain spring, then treated and stored in 434,000-U.S.-gallon storage tanks.
Facts about Cotonou Cadjehoun Airport (COO):
- Plans were revived in 2011 and President Yayi Boni presided at a ceremonial start to the construction of the new airport, using South African funding.
- The closest airport to Cotonou Cadjehoun Airport (COO) is Murtala Muhammed International Airport (LOS), which is located 66 miles (106 kilometers) ENE of COO.
- Because of Cotonou Cadjehoun Airport's relatively low elevation of 19 feet, planes can take off or land at Cotonou Cadjehoun 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.
- In 2004, the airport served 301,493 passengers.
- Cotonou Cadjehoun Airport (COO) currently has only 1 runway.
- The furthest airport from Cotonou Cadjehoun Airport (COO) is Funafuti International Airport (FUN), which is nearly antipodal to Cotonou Cadjehoun Airport (meaning Cotonou Cadjehoun Airport is almost on the exact opposite side of the Earth from Funafuti International Airport), and is located 12,172 miles (19,589 kilometers) away in Funafuti, Tuvalu.