Nonstop flight route between Port Graham, Alaska, United States and Diomede, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from PGM to DIO:
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- About this route
- PGM Airport Information
- DIO Airport Information
- Facts about PGM
- Facts about DIO
- Map of Nearest Airports to PGM
- List of Nearest Airports to PGM
- Map of Furthest Airports from PGM
- List of Furthest Airports from PGM
- 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 Port Graham Airport (PGM), Port Graham, Alaska, United States and Diomede Heliport (FAA: DM2) (DIO), Diomede, Alaska, United States would travel a Great Circle distance of 699 miles (or 1,124 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 Port Graham 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: | PGM / |
Airport Name: | Port Graham Airport |
Location: | Port Graham, Alaska, United States |
GPS Coordinates: | 59°20'53"N by 151°49'54"W |
Area Served: | Port Graham, Alaska |
Operator/Owner: | Alaska DOT&PF - Central Region |
Airport Type: | Public |
Elevation: | 93 feet (28 meters) |
# of Runways: | 1 |
View all routes: | Routes from PGM |
More Information: | PGM 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 Port Graham Airport (PGM):
- Because of Port Graham Airport's relatively low elevation of 93 feet, planes can take off or land at Port Graham 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 Port Graham Airport (PGM) is Port Elizabeth International Airport (PLZ), which is located 10,680 miles (17,188 kilometers) away in Port Elizabeth, South Africa.
- The closest airport to Port Graham Airport (PGM) is Nanwalek Airport (formerly English Bay Airport) (KEB), which is located only 3 miles (5 kilometers) W of PGM.
- Port Graham Airport (PGM) currently has only 1 runway.
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.
- The Little Diomede island is composed of Cretaceous age granite or quartz monzonite.
- The first square building in the island was a small Catholic church, which was planned by Father Bellarmine Lafortune in 1935 and built by Father Thomas Cunningham during his residency in the island between 1936 and 1947.
- 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.
- 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.
- While other emergency services are provided by volunteers and a health aide, the fire and rescue service is provided by Diomede Volunteer Fire Department and First Responders.
- 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.