Nonstop flight route between Olney, Texas, United States and Den Helder, Netherlands:
Departure Airport:
 
    Arrival Airport:
 
    Distance from ONY to DHR:
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- About this route
- ONY Airport Information
- DHR Airport Information
- Facts about ONY
- Facts about DHR
- Map of Nearest Airports to ONY
- List of Nearest Airports to ONY
- Map of Furthest Airports from ONY
- List of Furthest Airports from ONY
- Map of Nearest Airports to DHR
- List of Nearest Airports to DHR
- Map of Furthest Airports from DHR
- List of Furthest Airports from DHR
About this route:
A direct, nonstop flight between Olney Municipal Airport (ONY), Olney, Texas, United States and De Kooy Airfield (DHR), Den Helder, Netherlands would travel a Great Circle distance of 4,925 miles (or 7,926 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 Olney Municipal Airport and De Kooy Airfield, 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 Olney Municipal Airport and De Kooy Airfield. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | ONY / KONY | 
| Airport Name: | Olney Municipal Airport | 
| Location: | Olney, Texas, United States | 
| GPS Coordinates: | 33°22'5"N by 98°45'29"W | 
| Elevation: | 0 feet (0 meters) | 
| View all routes: | Routes from ONY | 
| More Information: | ONY Maps & Info | 
Arrival Airport Information:
| IATA / ICAO Codes: | DHR / EHKD | 
| Airport Names: | 
 | 
| Location: | Den Helder, Netherlands | 
| GPS Coordinates: | 52°55'24"N by 4°46'50"E | 
| Operator/Owner: | Royal Netherlands Navy / Den Helder Airport CV | 
| Airport Type: | Military/Public | 
| Elevation: | 4 feet (1 meters) | 
| # of Runways: | 1 | 
| View all routes: | Routes from DHR | 
| More Information: | DHR Maps & Info | 
Facts about Olney Municipal Airport (ONY):
- Because of Olney Municipal Airport's relatively low elevation of 0 feet, planes can take off or land at Olney 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 furthest airport from Olney Municipal Airport (ONY) is Sir Gaëtan Duval Airport (RRG), which is located 10,990 miles (17,687 kilometers) away in Rodrigues Island, Mauritius.
- As of the census of 2000, there were 3,396 people, 1,405 households, and 896 families residing in the city.
- The closest airport to Olney Municipal Airport (ONY) is Kickapoo Downtown Airport (KIP), which is located 37 miles (60 kilometers) NNE of ONY.
- Olney is served by the Olney Independent School District.
- The south side of Olney's Main Street, Texas State Highway 114.
Facts about De Kooy Airfield (DHR):
- The furthest airport from De Kooy Airfield (DHR) is Chatham Islands (CHT), which is located 11,805 miles (18,998 kilometers) away in Waitangi, Chatham Islands, New Zealand.
- Because of De Kooy Airfield's relatively low elevation of 4 feet, planes can take off or land at De Kooy Airfield 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.
- De Kooy Airfield is an airfield 2.9 NM south of Den Helder, the Netherlands, named after the nearby hamlet De Kooy.
- In addition to being known as "De Kooy Airfield", other names for DHR include "Vliegveld De Kooy", "Den Helder Airport" and "Maritiem Vliegkamp De Kooy".
- The oil fields in the North Sea will eventually be depleted and when that happens the airport would lose most of its helicopter movements and thus alternative markets are being looked at, such as business and holiday flights.
- De Kooy Airfield (DHR) currently has only 1 runway.
- The closest airport to De Kooy Airfield (DHR) is Amsterdam Airport Schiphol (AMS), which is located 43 miles (68 kilometers) S of DHR.




