Nonstop flight route between Coolah, New South Wales, Australia and Helena, Montana, United States:
Departure Airport:
(31°46'23"S by 149°36'36"E)
Arrival Airport:
(46°36'24"N by 111°58'58"W)
Distance from CLH to HLN:
8,146.50 miles (13,110.50 km)
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- About this route
- CLH Airport Information
- HLN Airport Information
- Facts about CLH
- Facts about HLN
- Map of Nearest Airports to CLH
- List of Nearest Airports to CLH
- Map of Furthest Airports from CLH
- List of Furthest Airports from CLH
- 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 Coolah Airport (CLH), Coolah, New South Wales, Australia and Helena Regional Airport (HLN), Helena, Montana, United States would travel a Great Circle distance of 8,147 miles (or 13,110 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 Coolah 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 Coolah 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: | CLH / YCAH |
| Airport Name: | Coolah Airport |
| Location: | Coolah, New South Wales, Australia |
| GPS Coordinates: | 31°46'23"S by 149°36'36"E |
| Operator/Owner: | Warrumbungle Shire Council |
| Airport Type: | Public |
| Elevation: | 1074 feet (327 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from CLH |
| More Information: | CLH 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 Coolah Airport (CLH):
- The closest airport to Coolah Airport (CLH) is Coonabarabran Airport (COJ), which is located 37 miles (59 kilometers) NNW of CLH.
- The furthest airport from Coolah Airport (CLH) is Santa Maria Airport (SMA), which is located 11,970 miles (19,264 kilometers) away in Santa Maria, Portugal.
- Coolah Airport (CLH) currently has only 1 runway.
Facts about Helena Regional Airport (HLN):
- 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.
- Helena Regional Airport (HLN) has 3 runways.
- Helena Regional Airport is a public airport two miles northeast of Helena, in Lewis and Clark County, Montana.
- 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".
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 36.52 miles (58.77 km) NNW | Coonabarabran Airport (COJ) | Coonabarabran, New South Wales, Australia |     |
| 2 | 54.53 miles (87.75 km) S | Mudgee Airport (DGE) | Mudgee, New South Wales, Australia | |
| 3 | 67.61 miles (108.80 km) NE | Gunnedah Airport (GUH) | Gunnedah, New South Wales, Australia | |
| 4 | 67.94 miles (109.35 km) WSW | Dubbo City Regional Airport (DBO) | Dubbo, New South Wales, Australia | |
| 5 | 87.23 miles (140.38 km) ENE | Tamworth Airport (TMW) | Tamworth, New South Wales, Australia | |
| 6 | 91.03 miles (146.50 km) NW | Coonamble Airport (CNB) | Coonamble, New South Wales, Australia | |
| 7 | 113.11 miles (182.03 km) S | Bathurst Airport (BHS) | Bathurst, New South Wales, Australia | |
| 8 | 123.08 miles (198.08 km) SE | Cessnock Airport (CES) | Cessnock, New South Wales, Australia | |
| 9 | 127.19 miles (204.70 km) ESE | Maitland Airport (MTL) | Maitland, New South Wales, Australia | |
| 10 | 146.55 miles (235.85 km) NE | Armidale Airport (ARM) | Armidale, New South Wales, Australia | |
| 11 | 146.90 miles (236.41 km) SW | Forbes Airport (FRB) | Forbes, New South Wales, Australia | |
| 12 | 147.87 miles (237.97 km) ESE | Newcastle Airport (NTL) | Newcastle, New South Wales, Australia | |
| 13 | 148.72 miles (239.34 km) SE | Belmont Airport (BEO) | Newcastle, New South Wales, Australia | |
| 14 | 157.77 miles (253.90 km) N | Moree Airport (MRZ) | Moree, New South Wales, Australia | |
| 15 | 158.89 miles (255.71 km) NE | Inverell Airport (IVR) | Inverell, New South Wales, Australia | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,970.40 miles (19,264.44 km) NW | Santa Maria Airport (SMA) | Santa Maria, Portugal | |
| 2 | 11,961.18 miles (19,249.61 km) N | Horta International Airport (HOR) | Horta, Azores, Portugal | |
| 3 | 11,955.55 miles (19,240.55 km) NNW | Pico Airport (PIX) | Pico Island, Azores, Portugal | |
| 4 | 11,946.04 miles (19,225.24 km) NNW | João Paulo II Airport (PDL) | Ponta Delgada, Azores, Portugal | |
| 5 | 11,919.41 miles (19,182.39 km) NNW | Lajes Air Base (TER) | Lajes, Azores, Portugal | |
| 6 | 11,913.97 miles (19,173.63 km) NNW | Graciosa Airport (GRW) | Graciosa Island, Azores, Portugal | |
| 7 | 11,904.21 miles (19,157.92 km) N | Flores Airport (FLW) | Flores Island, Azores, Portugal | |
| 8 | 11,889.64 miles (19,134.47 km) N | Corvo Airport (CVU) | Corvo Island, Azores, Portugal | |
| 9 | 11,652.17 miles (18,752.31 km) WNW | La Palma Airport (SPC) | La Palma, Canary Islands, Spain | |
| 10 | 11,639.27 miles (18,731.54 km) W | Madeira Airport (FNC) | Funchal, Madeira, Portugal | |
| 11 | 11,613.66 miles (18,690.33 km) W | Porto Santo Airport (PXO) | Porto Santo, Madeira, Portugal | |
| 12 | 11,607.02 miles (18,679.65 km) WNW | La Gomera Airport (GMZ) | Alajeró / San Sebastián, Canary Islands, Spain | |
| 13 | 11,570.83 miles (18,621.39 km) WNW | Tenerife-South Airport (TFS) | Tenerife, Canary Islands, Spain | |
| 14 | 11,567.78 miles (18,616.49 km) WNW | Tenerife North Airport (TFN) | Tenerife, Canary Islands, Spain | |
| 15 | 11,500.30 miles (18,507.89 km) WNW | Gran Canaria Airport (LPA) | Las Palmas, Canary Islands, Spain | |
| 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 | |