Nonstop flight route between Casper, Wyoming, United States and Diomede, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from CPR to DIO:
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- About this route
- CPR Airport Information
- DIO Airport Information
- Facts about CPR
- Facts about DIO
- Map of Nearest Airports to CPR
- List of Nearest Airports to CPR
- Map of Furthest Airports from CPR
- List of Furthest Airports from CPR
- 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 Casper–Natrona County International AirportCasper Army Airfield (CPR), Casper, Wyoming, United States and Diomede Heliport (FAA: DM2) (DIO), Diomede, Alaska, United States would travel a Great Circle distance of 2,803 miles (or 4,510 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 Casper–Natrona County International AirportCasper Army Airfield 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 Casper–Natrona County International AirportCasper Army Airfield 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: | CPR / KCPR |
Airport Name: | Casper–Natrona County International AirportCasper Army Airfield |
Location: | Casper, Wyoming, United States |
GPS Coordinates: | 42°54'29"N by 106°27'51"W |
Area Served: | Casper, Wyoming |
Operator/Owner: | Airport Board of Trustees |
Airport Type: | Public |
Elevation: | 5350 feet (1,631 meters) |
# of Runways: | 2 |
View all routes: | Routes from CPR |
More Information: | CPR 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 Casper–Natrona County International AirportCasper Army Airfield (CPR):
- The 331st was converted to a Very Heavy group in July 1944 and began training for deployment to Twentieth Air Force in the Pacific.
- Near the airport is the NCIA Business Park, which houses over 35 business ranging from manufacturing to aviation.
- Because of Casper–Natrona County International AirportCasper Army Airfield's high elevation of 5,350 feet, planes must typically fly at a faster airspeed in order to takeoff or land at CPR. Combined with a high temperature, this could make CPR a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- The closest airport to Casper–Natrona County International AirportCasper Army Airfield (CPR) is Converse County Airport (DGW), which is located 55 miles (89 kilometers) E of CPR.
- In the 2011 comedy film Bridesmaids, an airplane makes an emergency landing at the airport to deplane a rowdy flier and her group of friends.
- The furthest airport from Casper–Natrona County International AirportCasper Army Airfield (CPR) is Sir Gaëtan Duval Airport (RRG), which is located 10,731 miles (17,270 kilometers) away in Rodrigues Island, Mauritius.
- The airport started as the Casper Army Airfield in September 1942, consisting of four asphalt hard surfaced runways - N/S, NE/SW, E/W, NW/SE - varying in length between 8900' and 8600'.
- Casper–Natrona County International AirportCasper Army Airfield (CPR) has 2 runways.
Facts about Diomede Heliport (FAA: DM2) (DIO):
- 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.
- Today there are about 30 buildings on the island, including the residential housing that was mainly built in the 1970s and 1980s.
- According to traveler John Muir, on his visit to Diomede Islands in 1880s they found the natives eager to trade away everything they had.
- According to the United States Census Bureau, the village has a total area of 2.84 square miles, all of it land.
- The school year 1953–1954 in Little Diomede Island was adapted to better serve the local needs.
- On 7 November 2009, it was announced that one inhabitant was infected with H1N1 swine flu.
- 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 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.