Nonstop flight route between Sand Island, Midway Atoll, United States and Diomede, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from MDY to DIO:
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- About this route
- MDY Airport Information
- DIO Airport Information
- Facts about MDY
- Facts about DIO
- Map of Nearest Airports to MDY
- List of Nearest Airports to MDY
- Map of Furthest Airports from MDY
- List of Furthest Airports from MDY
- 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 Henderson Field (MDY), Sand Island, Midway Atoll, United States and Diomede Heliport (FAA: DM2) (DIO), Diomede, Alaska, United States would travel a Great Circle distance of 2,620 miles (or 4,217 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 Henderson Field 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 Henderson Field 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: | MDY / PMDY |
Airport Name: | Henderson Field |
Location: | Sand Island, Midway Atoll, United States |
GPS Coordinates: | 28°12'5"N by 177°22'53"W |
Area Served: | Midway Atoll |
Operator/Owner: | U.S. Dept. of the Interior Fish and Wildlife Service |
Airport Type: | Public |
Elevation: | 18 feet (5 meters) |
# of Runways: | 1 |
View all routes: | Routes from MDY |
More Information: | MDY 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 Henderson Field (MDY):
- Henderson Field (MDY) currently has only 1 runway.
- The airfield was previously served by Aloha Airlines with scheduled weekly charter flghts to and from Honolulu utilizing a Boeing 737-200 jetliner.
- Henderson Field is an uncontrolled airport.
- Henderson Field was named after Major Lofton R.
- The furthest airport from Henderson Field (MDY) is Lüderitz Airport (LUD), which is located 11,656 miles (18,759 kilometers) away in Luderitz, Namibia.
- Henderson Field is a public airport located on Sand Island in Midway Atoll, an unincorporated territory of the United States.
- Because of Henderson Field's relatively low elevation of 18 feet, planes can take off or land at Henderson Field 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 closest airport to Henderson Field (MDY) is Johnston Atoll Airport (JON), which is located 937 miles (1,508 kilometers) SE of MDY.
Facts about Diomede Heliport (FAA: DM2) (DIO):
- 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.
- At the beginning of the Cold War in the late 1940s Big Diomede became a Russian military base and all its native residents were removed to mainland Russia.
- The closest airport to Diomede Heliport (FAA: DM2) (DIO) is Wales Airport (WAA), which is located 26 miles (42 kilometers) ESE of 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.
- The median income for a household in the city was $23,750, and the median income for a family was $24,583.
- The school year 1953–1954 in Little Diomede Island was adapted to better serve the local needs.
- 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.
- 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.
- Little Diomede Island is located about 25 miles west from the mainland, in the middle of the Bering Strait.