Nonstop flight route between Diomede, Alaska, United States and Ukiah, California, United States:
Departure Airport:

Arrival Airport:

Distance from DIO to UKI:
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- About this route
- DIO Airport Information
- UKI Airport Information
- Facts about DIO
- Facts about UKI
- 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 UKI
- List of Nearest Airports to UKI
- Map of Furthest Airports from UKI
- List of Furthest Airports from UKI
About this route:
A direct, nonstop flight between Diomede Heliport (FAA: DM2) (DIO), Diomede, Alaska, United States and Ukiah Municipal Airport (UKI), Ukiah, California, United States would travel a Great Circle distance of 2,563 miles (or 4,125 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 Ukiah Municipal 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 Ukiah Municipal 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: | UKI / KUKI |
Airport Name: | Ukiah Municipal Airport |
Location: | Ukiah, California, United States |
GPS Coordinates: | 39°7'32"N by 123°12'2"W |
Operator/Owner: | City of Ukiah |
Airport Type: | Public |
Elevation: | 614 feet (187 meters) |
# of Runways: | 1 |
View all routes: | Routes from UKI |
More Information: | UKI Maps & Info |
Facts about Diomede Heliport (FAA: DM2) (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.
- As of the census of 2000, there were 146 people, 43 households, and 31 families residing in the city.
- 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.
- 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.
- Today there are about 30 buildings on the island, including the residential housing that was mainly built in the 1970s and 1980s.
- The Little Diomede island is composed of Cretaceous age granite or quartz monzonite.
- 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.
- 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.
Facts about Ukiah Municipal Airport (UKI):
- The furthest airport from Ukiah Municipal Airport (UKI) is Tôlanaro Airport (FTU), which is located 11,307 miles (18,197 kilometers) away in Tôlanaro, Madagascar.
- Ukiah Municipal Airport (UKI) currently has only 1 runway.
- Because of Ukiah Municipal Airport's relatively low elevation of 614 feet, planes can take off or land at Ukiah Municipal 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.
- The closest airport to Ukiah Municipal Airport (UKI) is Charles M. Schulz–Sonoma County Airport (STS), which is located 47 miles (76 kilometers) SSE of UKI.
- Staffing at the base consists of one battalion chief and one fire captain, one fire apparatus engineer, and several firefighters.
- Stol Air Commuter served Ukiah during the 1970s with nonstop service to San Francisco International Airport which was operated with Britten-Norman Islander and Trislander STOL capable aircraft.