Nonstop flight route between Carrickfinn, Ireland and Helena, Montana, United States:
Departure Airport:

Arrival Airport:

Distance from CFN to HLN:
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- About this route
- CFN Airport Information
- HLN Airport Information
- Facts about CFN
- Facts about HLN
- Map of Nearest Airports to CFN
- List of Nearest Airports to CFN
- Map of Furthest Airports from CFN
- List of Furthest Airports from CFN
- 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 Donegal Airport (CFN), Carrickfinn, Ireland and Helena Regional Airport (HLN), Helena, Montana, United States would travel a Great Circle distance of 4,133 miles (or 6,652 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 Donegal 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 Donegal 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: | CFN / EIDL |
Airport Names: |
|
Location: | Carrickfinn, Ireland |
GPS Coordinates: | 55°2'39"N by 8°20'27"W |
Area Served: | County Donegal |
Operator/Owner: | Airports Donegal |
Airport Type: | Public |
Elevation: | 30 feet (9 meters) |
# of Runways: | 1 |
View all routes: | Routes from CFN |
More Information: | CFN 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 Donegal Airport (CFN):
- Loganair is the only scheduled airline currently using the airport.
- The closest airport to Donegal Airport (CFN) is City of Derry Airport (LDY), which is located 47 miles (75 kilometers) E of CFN.
- Donegal Airport (CFN) currently has only 1 runway.
- Due to the large gas field in the area, non-scheduled chartered Helicopter flights connect to the multiple offshore installations.
- Because of Donegal Airport's relatively low elevation of 30 feet, planes can take off or land at Donegal 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.
- Loganair began Services to Dublin and Glasgow international on 2 November 2011 with Saab 340s.
- The furthest airport from Donegal Airport (CFN) is Ryan's Creek Aerodrome (SZS), which is located 11,853 miles (19,076 kilometers) away in Stewart Island, New Zealand.
- In addition to being known as "Donegal Airport", another name for CFN is "Aerfort Dhún na nGall".
Facts about Helena Regional Airport (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.
- The closest airport to Helena Regional Airport (HLN) is Bert Mooney Airport (BTM), which is located 51 miles (83 kilometers) SSW of HLN.
- Helena Regional Airport (HLN) has 3 runways.
- In addition to being known as "Helena Regional Airport", another name for HLN is "Helena Army Airfield".
- The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a primary commercial service airport.Federal Aviation Administration records say the airport had 85,649 passenger boardings in calendar year 2008, 88,314 in 2009 and 98,193 in 2010.