Nonstop flight route between Diomede, Alaska, United States and Choibalsan, Mongolia:
Departure Airport:

Arrival Airport:

Distance from DIO to COQ:
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- About this route
- DIO Airport Information
- COQ Airport Information
- Facts about DIO
- Facts about COQ
- 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 COQ
- List of Nearest Airports to COQ
- Map of Furthest Airports from COQ
- List of Furthest Airports from COQ
About this route:
A direct, nonstop flight between Diomede Heliport (FAA: DM2) (DIO), Diomede, Alaska, United States and Choibalsan Airport (COQ), Choibalsan, Mongolia would travel a Great Circle distance of 2,900 miles (or 4,667 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 Choibalsan 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 Choibalsan 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: | COQ / ZMCD |
Airport Name: | Choibalsan Airport |
Location: | Choibalsan, Mongolia |
GPS Coordinates: | 48°8'8"N by 114°38'45"E |
Area Served: | Choibalsan, Mongolia |
Operator/Owner: | Civil Aviation Authority of Mongolia |
Airport Type: | Public / Military |
Elevation: | 2457 feet (749 meters) |
# of Runways: | 1 |
View all routes: | Routes from COQ |
More Information: | COQ Maps & Info |
Facts about Diomede Heliport (FAA: DM2) (DIO):
- Little Diomede Island is located about 25 miles west from the mainland, in the middle of the Bering Strait.
- 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.
- Despite being separated by the new border after the Alaska purchase in 1867, Big Diomede had been home to families now living on Little Diomede and the people living on the American side of the border were very close relatives to those living on the Russian side.
- The closest airport to Diomede Heliport (FAA: DM2) (DIO) is Wales Airport (WAA), which is located 26 miles (42 kilometers) ESE of DIO.
- The location of the city is believed to have been used for at least 3,000 years as a hunting campsite.
- 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.
- Frozen ground and lack of soil on the rocky island also prevents digging graves, but rocks are piled on top of the burial sites instead.
Facts about Choibalsan Airport (COQ):
- The furthest airport from Choibalsan Airport (COQ) is Puerto Deseado Airport (PUD), which is nearly antipodal to Choibalsan Airport (meaning Choibalsan Airport is almost on the exact opposite side of the Earth from Puerto Deseado Airport), and is located 12,399 miles (19,955 kilometers) away in Puerto Deseado, Santa Cruz Province, Argentina.
- Choibalsan Airport (COQ) currently has only 1 runway.
- Choibalsan Airport handled 6,200 passengers last year.
- The closest airport to Choibalsan Airport (COQ) is Hulunbuir Hailar Airport (HLD), which is located 248 miles (398 kilometers) ENE of COQ.