Nonstop flight route between Derry, Northern Ireland, United Kingdom and Helena, Montana, United States:
Departure Airport:
Arrival Airport:
Distance from LDY to HLN:
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- About this route
- LDY Airport Information
- HLN Airport Information
- Facts about LDY
- Facts about HLN
- Map of Nearest Airports to LDY
- List of Nearest Airports to LDY
- Map of Furthest Airports from LDY
- List of Furthest Airports from LDY
- Map of Nearest Airports to HLN
- List of Nearest Airports to HLN
- Map of Furthest Airports from HLN
- List of Furthest Airports from HLN
About this route:
A direct, nonstop flight between City of Derry Airport (LDY), Derry, Northern Ireland, United Kingdom and Helena Regional Airport (HLN), Helena, Montana, United States would travel a Great Circle distance of 4,169 miles (or 6,709 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 City of Derry Airport and Helena Regional 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 City of Derry Airport and Helena Regional Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | LDY / EGAE |
Airport Names: |
|
Location: | Derry, Northern Ireland, United Kingdom |
GPS Coordinates: | 55°2'34"N by 7°9'42"W |
Area Served: | Derry, United Kingdom |
Operator/Owner: | Derry City Council |
Airport Type: | Public |
Elevation: | 23 feet (7 meters) |
# of Runways: | 1 |
View all routes: | Routes from LDY |
More Information: | LDY Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | HLN / KHLN |
Airport Names: |
|
Location: | Helena, Montana, United States |
GPS Coordinates: | 46°36'24"N by 111°58'58"W |
Area Served: | Helena, Montana |
Operator/Owner: | Helena Regional Airport Authority |
Airport Type: | Public |
Elevation: | 3877 feet (1,182 meters) |
# of Runways: | 3 |
View all routes: | Routes from HLN |
More Information: | HLN Maps & Info |
Facts about City of Derry Airport (LDY):
- City of Derry Airport (LDY) currently has only 1 runway.
- In mid-2009 work commenced on dualling the A2 from Maydown to Eglinton and the airport, which now provides a high speed dual carriageway connection to the city.
- After the war the base remained a military establishment until the 1950s when the Ministry of Defence returned much of the land to the original landowners.
- The closest airport to City of Derry Airport (LDY) is Belfast International Airport (BFS), which is located 46 miles (74 kilometers) SE of LDY.
- City of Derry Airport handled 384,973 passengers last year.
- At the end of 2008, British Airways, operated by Loganair as a franchise agreement, ceased the Glasgow International route which had operated for 30 years, following the loss in July 2008 of their public service obligation route to Dublin.
- During 1998 and 1999 safety improvements were undertaken at the airport as a matter of priority.
- Because of City of Derry Airport's relatively low elevation of 23 feet, planes can take off or land at City of Derry 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.
- In addition to being known as "City of Derry Airport", another name for LDY is "Londonderry/Eglinton Airport[1]".
- The furthest airport from City of Derry Airport (LDY) is Ryan's Creek Aerodrome (SZS), which is located 11,838 miles (19,051 kilometers) away in Stewart Island, New Zealand.
- In January 2009 the council appointed Albert Harrison, the former head of Belfast International Airport, as the new manager of the airport.
- In April 2009 the council issued tender documents for a multi-million pound expansion of the terminal to improve passenger flow and meet current EU customs and immigration regulations.
Facts about Helena Regional Airport (HLN):
- Helena Regional Airport (HLN) has 3 runways.
- Helena Regional Airport covers 1,224 acres at an elevation of 3,877 feet.
- In addition to being known as "Helena Regional Airport", another name for HLN is "Helena Army Airfield".
- The closest airport to Helena Regional Airport (HLN) is Bert Mooney Airport (BTM), which is located 51 miles (83 kilometers) SSW of HLN.
- The furthest airport from Helena Regional Airport (HLN) is Sir Gaëtan Duval Airport (RRG), which is located 10,563 miles (17,000 kilometers) away in Rodrigues Island, Mauritius.