Nonstop flight route between Tonopah, Nevada, United States and Diomede, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from XSD to DIO:
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- About this route
- XSD Airport Information
- DIO Airport Information
- Facts about XSD
- Facts about DIO
- Map of Nearest Airports to XSD
- List of Nearest Airports to XSD
- Map of Furthest Airports from XSD
- List of Furthest Airports from XSD
- 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 Tonopah Test Range Airport (XSD), Tonopah, Nevada, United States and Diomede Heliport (FAA: DM2) (DIO), Diomede, Alaska, United States would travel a Great Circle distance of 2,814 miles (or 4,529 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 Tonopah Test Range 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 Tonopah Test Range 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: | XSD / KTNX |
Airport Name: | Tonopah Test Range Airport |
Location: | Tonopah, Nevada, United States |
GPS Coordinates: | 37°47'40"N by 116°46'42"W |
View all routes: | Routes from XSD |
More Information: | XSD 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 Tonopah Test Range Airport (XSD):
- The primary access to the facility is off of U.S.
- In 1980 the 4477th TEF was re-designated as the 4477th Test and Evaluation Squadron and the operation was renamed again to Constant Peg.
- The furthest airport from Tonopah Test Range Airport (XSD) is Pierrefonds Airport (ZSE), which is located 11,207 miles (18,036 kilometers) away in Saint-Pierre, Réunion.
- The closest airport to Tonopah Test Range Airport (XSD) is Tonopah Airport (TPH), which is located 25 miles (40 kilometers) NW of XSD.
- Tonopah is owned by the USAF Air Combat Command.
- In 2006, the Constant Peg program was declassified and the USAF held a series of press conferences about the former top secret US MiGs.
- The Tonopah Test Range airfield came into existence in 1957 and was used by the Department of Energy, the Air Force, and several contractors.
- The advent of Operation Rolling Thunder during the Vietnam War in March of 1965 led to the introduction of the obsolete and subsonic MiG-17 and the supersonic MiG-21 by the North Vietnamese Air Force being pitted against U.S.
- After the 4477th TES was inactivated, the remaining assets were reconstituted as a detachment of the 57th Fighter Wing at Nellis AFB.
Facts about Diomede Heliport (FAA: DM2) (DIO):
- Water for winter use is drawn from a mountain spring, then treated and stored in 434,000-U.S.-gallon storage tanks.
- 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.
- There is no hospital on the island and emergency services are limited due to the remoteness of the island.
- 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.
- 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.
- 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.