Nonstop flight route between Cotulla, Texas, United States and Diomede, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from COT to DIO:
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- About this route
- COT Airport Information
- DIO Airport Information
- Facts about COT
- Facts about DIO
- Map of Nearest Airports to COT
- List of Nearest Airports to COT
- Map of Furthest Airports from COT
- List of Furthest Airports from COT
- 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 Cotulla–La Salle County Airport (COT), Cotulla, Texas, United States and Diomede Heliport (FAA: DM2) (DIO), Diomede, Alaska, United States would travel a Great Circle distance of 3,868 miles (or 6,224 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 Cotulla–La Salle County 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 Cotulla–La Salle County 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: | COT / KCOT |
Airport Name: | Cotulla–La Salle County Airport |
Location: | Cotulla, Texas, United States |
GPS Coordinates: | 28°27'24"N by 99°13'5"W |
Area Served: | Cotulla, Texas |
Operator/Owner: | City of Cotulla/La Salle County |
Airport Type: | Public |
Elevation: | 474 feet (144 meters) |
# of Runways: | 1 |
View all routes: | Routes from COT |
More Information: | COT 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 Cotulla–La Salle County Airport (COT):
- Because of Cotulla–La Salle County Airport's relatively low elevation of 474 feet, planes can take off or land at Cotulla–La Salle County 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.
- Cotulla–La Salle County Airport (COT) currently has only 1 runway.
- The closest airport to Cotulla–La Salle County Airport (COT) is Garner Field (UVA), which is located 61 miles (98 kilometers) NNW of COT.
- The furthest airport from Cotulla–La Salle County Airport (COT) is Sir Gaëtan Duval Airport (RRG), which is located 11,187 miles (18,003 kilometers) away in Rodrigues Island, Mauritius.
Facts about Diomede Heliport (FAA: DM2) (DIO):
- Little Diomede Island is located about 25 miles west from the mainland, in the middle of the Bering Strait.
- According to traveler John Muir, on his visit to Diomede Islands in 1880s they found the natives eager to trade away everything they had.
- 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.
- 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 closest airport to Diomede Heliport (FAA: DM2) (DIO) is Wales Airport (WAA), which is located 26 miles (42 kilometers) ESE of DIO.
- 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 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.
- 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.