Nonstop flight route between Carrickfinn, Ireland and Helena, Montana, United States:
Departure Airport:
(55°2'39"N by 8°20'27"W)
Arrival Airport:
(46°36'24"N by 111°58'58"W)
Distance from CFN to HLN:
4,133.12 miles (6,651.59 km)
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Jump to:
- 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):
- In addition to being known as "Donegal Airport", another name for CFN is "Aerfort Dhún na nGall".
- Donegal Airport (CFN) currently has only 1 runway.
- Loganair is the only scheduled airline currently using the airport.
- Loganair began Services to Dublin and Glasgow international on 2 November 2011 with Saab 340s.
- The closest airport to Donegal Airport (CFN) is City of Derry Airport (LDY), which is located 47 miles (75 kilometers) E of CFN.
- In October 2011, Aer Arann ceased operations at Donegal due to the loss of the Dublin PSO contract.
- 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.
- 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.
Facts about Helena Regional Airport (HLN):
- Helena Regional Airport (HLN) has 3 runways.
- The closest airport to Helena Regional Airport (HLN) is Bert Mooney Airport (BTM), which is located 51 miles (83 kilometers) SSW of HLN.
- In addition to being known as "Helena Regional Airport", another name for HLN is "Helena Army Airfield".
- 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 46.68 miles (75.12 km) E | City of Derry Airport (LDY) | Derry, Northern Ireland, United Kingdom |     |
| 2 | 52.40 miles (84.33 km) SSE | Enniskillen/St Angelo Airport (ENK) | Enniskillen, Co Fermanagh, Northern Ireland, United Kingdom | |
| 3 | 53.78 miles (86.55 km) S | Sligo Airport (SXL) | Strandhill (near Sligo), Ireland | |
| 4 | 80.65 miles (129.80 km) SSW | Ireland West Airport Knock (NOC) | Knock, Ireland | |
| 5 | 88.24 miles (142.01 km) SW | Belmullet Aerodrome (BLY) | Belmullet, Ireland | |
| 6 | 88.66 miles (142.68 km) ESE | Belfast International Airport (BFS) | Belfast, Northern Ireland, United Kingdom | |
| 7 | 92.90 miles (149.51 km) ENE | Islay Airport (ILY) | Islay, Scotland, United Kingdom | |
| 8 | 102.55 miles (165.04 km) ESE | George Best Belfast City Airport (BHD) | Belfast, Northern Ireland, United Kingdom | |
| 9 | 107.82 miles (173.51 km) NE | Colonsay Airport (CSA) | Colonsay, Inner Hebrides, Scotland, United Kingdom | |
| 10 | 107.98 miles (173.77 km) ENE | Campbeltown Airport (CAL) | Campbeltown, Scotland, United Kingdom | |
| 11 | 115.66 miles (186.14 km) NNE | Tiree Airport (TRE) | Tiree, Scotland, United Kingdom | |
| 12 | 122.91 miles (197.80 km) SSW | Galway Airport (GWY) | Galway, Ireland | |
| 13 | 126.71 miles (203.92 km) NNE | Coll Island Airport (COL) | Coll, Scotland, United Kingdom | |
| 14 | 133.34 miles (214.60 km) SSW | Connemara Airport (NNR) | Inverin, Ireland | |
| 15 | 139.87 miles (225.10 km) SE | Dublin Airport (DUB) | Dublin, Ireland | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,853.37 miles (19,076.11 km) SSE | Ryan's Creek Aerodrome (SZS) | Stewart Island, New Zealand | |
| 2 | 11,822.88 miles (19,027.03 km) SSE | Invercargill Airport (IVC) | Invercargill, New Zealand | |
| 3 | 11,803.71 miles (18,996.18 km) S | Dunedin International Airport (DUD) | Dunedin, Otago, New Zealand | |
| 4 | 11,750.03 miles (18,909.80 km) S | Alexandra Aerodrome (ALR) | Alexandra, New Zealand | |
| 5 | 11,740.28 miles (18,894.09 km) S | Oamaru Airport (OAM) | Oamaru, North Otago, New Zealand | |
| 6 | 11,732.41 miles (18,881.44 km) SSE | Queenstown Airport (ZQN) | Queenstown, New Zealand | |
| 7 | 11,715.71 miles (18,854.56 km) S | Wanaka Airport (WKA) | Wanaka, New Zealand | |
| 8 | 11,701.45 miles (18,831.61 km) SSE | Milford Sound Airport (MFN) | Milford Sound, New Zealand | |
| 9 | 11,694.39 miles (18,820.25 km) S | Richard Pearse Airport (Timaru Airport) (TIU) | Timaru, New Zealand | |
| 10 | 11,667.02 miles (18,776.20 km) S | Ashburton Aerodrome (ASG) | Ashburton, New Zealand | |
| 11 | 11,664.26 miles (18,771.76 km) S | Glentanner Aerodrome (GTN) | Mount Cook, New Zealand | |
| 12 | 11,654.66 miles (18,756.30 km) S | Mount Cook Airport (MON) | Mount Cook, New Zealand | |
| 13 | 11,637.49 miles (18,728.68 km) S | Christchurch International Airport (CHC) | Christchurch, New Zealand | |
| 14 | 11,633.21 miles (18,721.78 km) S | Fox Glacier Aerodrome (FGL) | Fox Glacier, New Zealand | |
| 15 | 11,584.30 miles (18,643.08 km) S | Hokitika Airport (HKK) | Hokitika, New Zealand | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 51.31 miles (82.58 km) SSW | Bert Mooney Airport (BTM) | Butte, Montana, United States | |
| 2 | 67.05 miles (107.90 km) NNE | Great Falls International Airport (GTF) | Great Falls, Montana, United States | |
| 3 | 69.72 miles (112.21 km) SE | Bozeman Yellowstone International Airport (BZN) | Bozeman, Montana, United States | |
| 4 | 72.47 miles (116.63 km) NNE | Malmstrom Air Force Base (GFA) | Great Falls, Montana, United States | |
| 5 | 96.56 miles (155.40 km) SE | Mission Field (LVM) | Livingston, Montana, United States | |
| 6 | 97.30 miles (156.59 km) SSW | Dillon Airport (DLN) | Dillon, Montana, United States | |
| 7 | 102.03 miles (164.20 km) WNW | Missoula International Airport (MSO) | Missoula, Montana, United States | |
| 8 | 122.80 miles (197.63 km) ENE | Lewistown Municipal Airport (LWT) | Lewistown, Montana, United States | |
| 9 | 133.72 miles (215.20 km) N | Shelby Airport (SBX) | Shelby, Montana, United States | |
| 10 | 137.25 miles (220.89 km) SW | Lemhi County Airport (SMN) | Salmon, Idaho, United States | |
| 11 | 138.97 miles (223.65 km) SSE | Yellowstone Airport (WYS) | West Yellowstone, Montana, United States | |
| 12 | 139.51 miles (224.52 km) N | Cut Bank Municipal AirportCut Bank Army Air Field (CTB) | Cut Bank, Montana, United States | |
| 13 | 158.54 miles (255.14 km) NW | Glacier Park International Airport (FCA) | Kalispell, Montana, United States | |
| 14 | 163.70 miles (263.45 km) E | Roundup Airport (RPX) | Roundup, Montana, United States | |
| 15 | 169.14 miles (272.20 km) NE | Havre City-County Airport (HVR) | Havre, Montana, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,563.08 miles (16,999.59 km) S | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,552.15 miles (16,981.99 km) SSE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 3 | 10,548.64 miles (16,976.36 km) SE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 4 | 10,536.59 miles (16,956.96 km) SSE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 5 | 10,525.82 miles (16,939.62 km) SSE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 6 | 10,452.26 miles (16,821.24 km) SE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 7 | 10,363.52 miles (16,678.43 km) SE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 8 | 10,340.10 miles (16,640.74 km) SE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 10,252.07 miles (16,499.06 km) SE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 10 | 10,247.66 miles (16,491.97 km) SE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 11 | 10,235.05 miles (16,471.68 km) SE | Morombe Airport (MXM) | Morombe, Madagascar | |
| 12 | 10,200.52 miles (16,416.11 km) SE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 13 | 10,189.58 miles (16,398.51 km) SE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 14 | 10,174.40 miles (16,374.07 km) SE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 15 | 10,162.80 miles (16,355.40 km) ESE | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |