Nonstop flight route between Hillsboro / Portland, Oregon, United States and Diomede, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from HIO to DIO:
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- About this route
- HIO Airport Information
- DIO Airport Information
- Facts about HIO
- Facts about DIO
- Map of Nearest Airports to HIO
- List of Nearest Airports to HIO
- Map of Furthest Airports from HIO
- List of Furthest Airports from HIO
- 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 Portland-Hillsboro Airport (HIO), Hillsboro / Portland, Oregon, United States and Diomede Heliport (FAA: DM2) (DIO), Diomede, Alaska, United States would travel a Great Circle distance of 2,192 miles (or 3,528 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 relatively short distance between Portland-Hillsboro Airport and Diomede Heliport (FAA: DM2), the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | HIO / KHIO |
Airport Name: | Portland-Hillsboro Airport |
Location: | Hillsboro / Portland, Oregon, United States |
GPS Coordinates: | 45°32'25"N by 122°56'59"W |
Operator/Owner: | Port of Portland |
Airport Type: | Public |
Elevation: | 204 feet (62 meters) |
# of Runways: | 2 |
View all routes: | Routes from HIO |
More Information: | HIO 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 Portland-Hillsboro Airport (HIO):
- Because of Portland-Hillsboro Airport's relatively low elevation of 204 feet, planes can take off or land at Portland-Hillsboro 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 furthest airport from Portland-Hillsboro Airport (HIO) is Tôlanaro Airport (FTU), which is located 10,913 miles (17,563 kilometers) away in Tôlanaro, Madagascar.
- Located in Portland's western and Washington County suburbs, Hillsboro Airport is connected to the metropolitan area by TriMet buses and the MAX Blue Line's Fair Complex/Hillsboro Airport station.
- The airport was originally Hillsboro's municipal airport, which the Port of Portland bought in 1966.
- The closest airport to Portland-Hillsboro Airport (HIO) is Portland International Airport (PDX), which is located only 17 miles (28 kilometers) E of HIO.
- Portland-Hillsboro Airport (HIO) has 2 runways.
- With the outbreak of World War II in 1941, the city received federal money again, plus the city approved local financing to improve the airport again, with the costs of the improvements totaling around $600,000.
Facts about Diomede Heliport (FAA: DM2) (DIO):
- Today there are about 30 buildings on the island, including the residential housing that was mainly built in the 1970s and 1980s.
- The United States purchased Alaska from Russia in 1867 which included the Little Diomede.
- The median income for a household in the city was $23,750, and the median income for a family was $24,583.
- There is no hospital on the island and emergency services are limited due to the remoteness of the island.
- The Little Diomede island is composed of Cretaceous age granite or quartz monzonite.
- 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.
- 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.